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TAKABATAKE Tomoyuki

    Department of Civil and Environmental Engineering　Associate Professor
Last Updated :2024/05/15

Researcher Information

Research funding number

  • 30823380

J-Global ID

Research Interests

  • 海岸工学   自然災害科学   水工学   土木工学   

Research Areas

  • Social infrastructure (civil Engineering, architecture, disaster prevention) / Hydroengineering

Academic & Professional Experience

  • 2021/04 - Today  近畿大学 理工学部 社会環境工学科 准教授
  • 2018/04 - 2021/03  Waseda UniversityResearch Institute for Science and Engineering
  • 2017/10 - 2018/03  オタワ大学 訪問研究員
  • 2012/04 - 2016/03  大成建設株式会社 技術センター研究員

Education

  • 2016/04 - 2017/09  早稲田大学 創造理工学研究科 建設工学専攻 博士後期課程
  • 2010/04 - 2012/03  早稲田大学 創造理工学研究科 建設工学専攻 修士課程
  • 2006/04 - 2010/03  Waseda University  School of Science and Engineering

Association Memberships

  • JAPAN SOCIETY OF CIVIL ENGINEERS   JAPAN SOCIETY FOR NATURAL DISASTER SCIENCE   JAPANESE ASSOCIATION FOR COASTAL ZONE STUDIES   

Published Papers

  • Nanami Hasegawa; Tomoyuki Takabatake
    International Journal of Disaster Risk Reduction Elsevier BV 104108 - 104108 2212-4209 2023/11 [Refereed]
  • Dawn Chenxi Han; Tomoyuki Takabatake; Miguel Esteban; Tomoya Shibayama
    International Journal of Disaster Risk Reduction Elsevier BV 96 103915 - 103915 2212-4209 2023/10 [Refereed]
  • Relative Importance of Safety against Natural Disasters for Residential Selection: A Case Study at Osaka Prefecture, Japan
    Tomoyuki Takabatake; Suguru Nishigaki; Nanami Hasegawa
    International Journal of Disaster Resilience in the Built Environment 2022/12 [Refereed]
  • Tomoyuki Takabatake; Nanami Hasegawa
    Land 11 1781  2022/10 [Refereed]
  • Tomoyuki Takabatake; Taiga Kojima
    Georisk: Assessment and Management of Risk for Engineered Systems and Geohazards Informa UK Limited 17 (3) 595 - 611 1749-9518 2022/09 [Refereed]
  • Chang, Y; Mäll, M; Nakamura, R; Takabatake, T; Bricker, J; Esteban, M; Shibayama, T
    Journal of Coastal and Hydraulic Structures 2 16  2022/08 [Refereed]
  • Justin Joseph Valdez; Tomoya Shibayama; Tomoyuki Takabatake; Miguel Esteban
    Coastal Engineering Journal TAYLOR & FRANCIS LTD 2166-4250 2022/07 [Refereed]
     
    6Haiyan in 2013 was one of the most powerful typhoons to have affected the Philippines, devastating in its path a wide portion of Leyte, and causing extensive damage to structures in Tacloban City. To understand the likely impacts that would be exerted by a storm surge on a structure deemed important, the authors used a coupled model that hindcasted the flooding that took place during Haiyan. This coupled model included the use of the Weather Research and Forecasting (WRF) Model (with Bogussing scheme) to simulate the atmospheric conditions during the passage of Haiyan, the Finite Volume Coastal Ocean Model (FVCOM) to simulate the storm surge and obtain the boundary conditions for the wind and flood (hydrostatic, hydrodynamic, and breaking wave), and the Structural Analysis and Designing Program (STAAD.Pro) to calculate the corresponding axial, shear, and bending moment envelopes based on the storm surge simulation. A 4-floor public school building in Tacloban was modeled and the effects that the storm surge would have on a corner column were analyzed. Based on the results, the axial, shear, and moment at the corner column significantly increased when considering flood loads, indicating the importance of including such loads in the design of essential structures.
  • Tomoyuki Takabatake; Miguel Esteban; Tomoya Shibayama
    International Journal of Disaster Risk Reduction 74 102954  2022/05 [Refereed]
  • Magnification of Tsunami Risks Due to Sea Level Rise Along the Eastern Coastline of Japan
    Kentaro Koyano; Tomoyuki, Takabatake; Miguel Esteban; Tomoya Shibayama
    Journal of Coastal and Hydraulic Structures 2 12  2022/04 [Refereed]
  • Naoto Inagaki; Tomoya Shibayama; Tomoyuki Takabatake; Miguel Esteban; Martin Mäll; Thit Oo Kyaw
    Coastal Engineering Journal 64 (1) 116 - 134 2166-4250 2022/02 [Refereed]
     
    A field survey of Fukuura Coast (in Tokyo Bay, Japan) revealed during the passage of Typhoon Faxai in 2019 waves with considerable momentum caused significant wave overtopping, resulting in structural damage to coastal defenses and localized flooding. The hindcasted wave height using a third-generation wave model was not high enough to explain the extent of the local damage at Fukuura Coast, likely due to such methods failing to take into account the strong gust-winds recorded during the passage of the typhoon. To solve such problems the authors developed a new numerical model that takes into account the dynamic interaction of air and water, based on the finite volume method (FVM) and the volume of fluid method (VOF). Although this model still slightly underestimates the measurements in the experiments previously conducted by different authors, it is better than existing methods when estimating the overtopping rates under strong winds. The model was then applied to a real-scale model of Fukuura Coast, where by taking into account strong gust-wind speed of 41 m/s the authors were able to explain the phenomena that took place.
  • Tomoyuki Takabatake; Dawn Chenxi Han; Justin Joseph Valdez; Naoto Inagaki; Martin Mäll; Miguel Esteban; Tomoya Shibayama
    Journal of Geophysical Research: Oceans American Geophysical Union (AGU) 127 (1) e2021JC017826  2169-9275 2022/01 [Refereed]
     
    Massive landslides can generate large tsunamis and endanger human lives and properties. While a number of laboratory experiments on either subaerial or submarine landslide-tsunamis have been conducted, few studies have focused on partially submerged events. The present study aimed to investigate the characteristics of partially submerged landslide-tsunamis and to develop a predictive equation that can estimate their heights through three-dimensional laboratory experiments that used 114 different conditions. The experimental results showed that, while waves generated in the landslide sliding direction had around 1.7 times higher amplitude than those propagating laterally in the near-field region, the wave period, celerity, and wavelength did not alter significantly according to the propagation angles. The effects of wave dispersion were also shown to be significant during the propagation process. Such wave characteristics were consistent with those reported in existing subaerial landslide tsunami experiments conducted by other researchers. Based on the data set obtained, the authors also derived a predictive equation which was confirmed to be able to estimate the results of other experimental studies on partially submerged landslide-tsunamis with an error of around ±30%, and thus can be helpful for a rapid tsunami hazard assessment. The developed equation indicated that the volume of a landslide could have more than twice the impact on the height of a partially submerged landslide-tsunami than other parameters. The effects of the landslide size were also shown to be more significant than in the case of a subaerial landslide-tsunami, though the wave attenuation process was similar in both types.
  • Tomoyuki Takabatake; Dawn Han Chenxi; Miguel Esteban; Tomoya Shibayama
    International Journal of Disaster Risk Reduction Elsevier BV 68 102684 - 102684 2212-4209 2022/01 [Refereed]
  • Kohei Senoo; Tomoyuki Takabatake; Miguel Esteban; Tomoya Shibayama
    International Journal of Sustainable Future for Human Security SustaiN Society 7 (2) 3 - 14 2021/11 [Refereed]
     
    Japan is a country that is normally considered to be well protected against storm surges, with the population aware of the potential consequences of such events. However, the inundation caused by typhoon Jebi in 2018 at Osaka Bay has highlighted that there is a significant risk of flooding in many areas. In the present paper the authors conducted questionnaire surveys with the aim to gauge the level of storm surge awareness and intended evacuation behaviour of the population of low-lying areas of Tokyo City. The results indicate that respondents have a high awareness regarding storm surges, but lower actual knowledge about the risk in their area and the evacuation plan. Respondents who have higher risk awareness about storm surges often had participated in evacuation drills, and those who knew about the inundation map tend to indicate that they would perform long-distance evacuation. It was also found that respondents who are in their 30s have lower awareness than other age groups. Keywords: storm surge; awareness; natural hazards; Japan; intended evacuation behaviour
  • Hidenori Ishii; Tomoyuki Takabatake; Miguel Esteban; Jacob Stolle; Tomoya Shibayama
    Coastal Engineering Journal Informa {UK} Limited 63 (4) 1 - 19 2166-4250 2021/10 [Refereed]
  • Inter-Model Comparison for Tsunami Debris Simulation
    Tomoyuki Takabatake; Jacob Stolle; Koji Hiraishi; Naoto Kihara; Kazuya Nojima; Yoshinori Shigihara; Taro Arikawa; Ioan Nistor
    Journal of Disaster Research 16 (7) 1030 - 1044 2021/10 [Refereed]
  • Joseph Kim; Tomoyuki Takabatake; Ioan NISTOR; Tomoya Shibayama
    Canadian Journal of Civil Engineering Canadian Science Publishing 0315-1468 2021/06 [Refereed]
     
    Soft measures such as evacuation planning are recommended to mitigate the loss of life during tsunamis. Two types of evacuation models are widely used: (1) Agent-based modelling (ABM) defines sets of rules that individual agents in a simulation follow during a simulated evacuation. (2) Geographical information systems (GIS) are more accessible to city planners, but cannot incorporate the dynamic behaviours found in ABMs. The two evacuation modelling methodologies were compared through a case study by assessing the state of evacuation preparedness and investigating potential mitigation options. The two models showed different magnitudes for mortality rates and facility demand but had similar trends. Both models agreed on the best solution to reduce the loss of life for the community. GIS may serve as a useful tool for initial investigation or as a validation tool for ABMs. ABMs are recommended for use when modelling evacuation until GIS methodologies are further developed.
  • Clemens Krautwald; Jacob Stolle; Ian Robertson; Hendra Achiari; Takahito Mikami; Ryota Nakamura; Tomoyuki Takabatake; Yuta Nishida; Tomoya Shibayama; Miguel Esteban; Nils Goseberg; Ioan Nistor
    Journal of Waterway, Port, Coastal and Ocean Engineering 147 (2) 0733-950X 2021/03 [Refereed]
     
    The September 28, 2018 earthquake and tsunami, which occurred north of Palu City, Indonesia, attracted widespread interest from the scientific community due to the unusually large tsunami that occurred after a strike-slip earthquake with a relatively small moment magnitude (MW = 7.5). To understand the structural performance of buildings and infrastructure under hydrodynamic loads and their associated effects, the authors conducted field surveys in Palu City. Light wooden frame constructions and masonry infill walls were common in the area, some of which were severely damaged by the earthquake and tsunami. Reinforced concrete structures remained predominantly intact, although they suffered soil-related issues such as scour around rigid building members. Local structural failures caused by the loss of supporting soil were also observed during the field survey, resulting in an overall reduction in the stability of the inspected structures. Based on the observations made, knowledge gaps and research needs concerning coastal and structural scouring are discussed. These are tied into the latest community research activities and put in the context of a published ASCE standard chapter that discusses tsunami design.
  • Naoto Inagaki; Tomoya Shibayama; Miguel Esteban; Tomoyuki Takabatake
    Natural Hazards Springer Science and Business Media {LLC} 105 (1) 841 - 858 0921-030X 2021/01 [Refereed]
  • Field Survey of Flank Collapse and Run-up Heights due to 2018 Anak Krakatau Tsunami
    Miguel Esteban; Tomoyuki Takabatake; Hendra Achiari; Takahito Mikami; Ryota Nakamura; Mustarakh Gelfi; Satriyo Panalaran; Yuta Nishida; Naoto Inagaki; Christopher Chadwick; Kota Oizumi; Tomoya Shibayama
    Journal of Coastal and Hydraulic Structures 1 1  2021/01 [Refereed]
  • Mohsen Soltanpour; Kourosh Hejazi; Mohammad Hadi Jabbari; Tomoya Shibayama; Shinsaku Nishizaki; Tomoyuki Takabatake
    Coastal Engineering Journal Informa UK Limited 63 (1) 32 - 51 2166-4250 2021/01 [Refereed]
     
    Wave-flume laboratory experiments were conducted to study the mechanism of fluidization of partially consolidated mud beds, under wave propagation. The mixture of commercial kaolinite and tap water was allowed to partially consolidate under its self-weight before initiating the progressive wave propagation. The vertical changes in pore water pressure in the mud bed were monitored by using sensitive pore pressure transducers, at three levels across the mud layer depth. The experiments revealed that the wave characteristics and bed properties strongly affect the complex fluidization process, in which the accumulated pore water pressure develops through four transitional stages. The accumulated pore water pressure increases sharply at the first stage, which is followed by further gradual increases in the next two stages, with different rates. The breakup of aggregated mud particles, i.e. the generation of fluid mud, is observed at the last stage, resulting in a partial dissipation of accumulated pore pressure and wave height attenuation. The measurements also revealed that the fluidization starts from the top of the mud layer, and proceeds to the underlying layers.
  • Kotaro Iimura; Tomoya Shibayama; Tomoyuki Takabatake; Miguel Esteban
    Coastal Engineering Journal Informa UK Limited 63 (1) 1 - 16 2166-4250 2021/01 [Refereed]
     
    The 2011 Tohoku Tsunami caused severe damage to many coastal defenses along the Japanese coastline, including areas where two adjacent upright sea dikes of different heights met. There are many places along the coastline where structures of different heights and shapes meet due to the various design codes. In this study, the authors aim to examine the tsunami flow around such dikes by conducting three-dimensional hydraulic experiments in a tsunami wave basin and numerical simulations using the fluid dynamics model OpenFOAM. Twelve experimental cases were tested by changing the waveforms, and also by keeping the height of one side of the dike model constant while adjusting the dimensions of the other side. The results show that the difference in height between the structures significantly influences the volume of overtopping over the relatively lower dike and the inundation depth and velocity behind the dikes. Furthermore, different characteristics of inundation patterns are observed between the inundation depth and velocity. Hence, this study illustrates the necessity to re-assess the effectiveness of such structures against tsunami events.
  • Kentaro Koyano; Tomoyuki Takabatake; Miguel Esteban; Tomoya Shibayama
    Journal of Waterway, Port, Coastal and Ocean Engineering 147 (1) 0733-950X 2021/01 [Refereed]
     
    The 2011 Tohoku Earthquake and Tsunami generated a massive tsunami that devastated Kujukuri Beach in Chiba Prefecture, Japan. The possibility that edge waves were involved in the propagation mechanism of the tsunami was investigated by using a numerical method. To detect the components of edge waves, the fluctuations of the simulated sea level, the variations of the power spectral and the phase, coherences, as well as the dispersed relations of the wavelength and the period, were analyzed. As a result, it was possible to conclude that there is a high probability that edge waves could have propagated around this coastline. In addition, to analyze the various types of edge waves that could be expected three additional earthquake scenarios were considered, each of them with a different magnitude and epicenter: The 1896 Sanriku Earthquake, the 1677 Empo Boso-oki Earthquake, and the 1703 Genroku Kanto Earthquake. This comparison indicates that there is a particular risk that edge waves can be generated by large earthquakes with their epicenter in the northern part of the Japan Trench.
  • Koichiro Ohira; Tomoyuki Takabatake; Miguel Esteban; Rafael Aranguiz; Martin Mäll; Tomoya Shibayama
    Journal of Waterway, Port, Coastal and Ocean Engineering ASCE-AMER SOC CIVIL ENGINEERS 146 (6) 0733-950X 2020/11 [Refereed]
     
    Water level oscillations induced by the ground motion of an earthquake have occasionally been observed in a closed or partially enclosed water system. The generated water disturbances can induce localized flooding, boat collisions, breakage/damage of moored cables due to water disturbances, or even the capsizing of vessels. In this study, the authors focused on cases of seismic water level oscillations in canals and attempted to investigate the potential hazards of and effective countermeasures against them through numerical simulations. The proposed numerical simulation model was first validated by reproducing the water level oscillation that was actually observed at a canal in Mexico City (Xochimilco Canal) during the 2017 Central Mexico Earthquake. The method was then applied to one of the canals in Tokyo (Keihin Canal) to clarify the potential water level fluctuations that can take place due to this phenomenon. The results indicate that while the risks of local inundation would be low, small boats, which can be found in many places in the canal, are at risk of capsizing. Finally, the use of wave-dissipating blocks was found to be an effective countermeasure to decrease the potential for a significant seismic water level oscillation to take place in this canal.
  • Tomoyuki Takabatake; Martin Mäll; Dawn Chenxi Han; Naoto Inagaki; Daichi Kisizaki; Miguel Esteban; Tomoya Shibayama
    Coastal Engineering Journal Informa UK Limited 62 (4) 582 - 601 2166-4250 2020/10 [Refereed]
     
    In the present study, three different types of landslide-generated tsunamis (subaerial, partially submerged and submarine) were investigated through laboratory experiments that used 261 different experimental conditions. The results show that, for the near-field region, the subaerial landslide generated a higher leading wave, while the submarine landslide generated a higher second wave. However, frequency dispersion considerably influenced their propagation, with the leading wave decaying and the trailing waves being enhanced. The present study also revealed that the leading wave has higher values for wave celerity, period, and length than the second wave, regardless of landslide type. It was also shown that the celerity of the leading wave and second wave can be approximated by the solitary wave theory and third-order Stokes theory, respectively. Using the extensive experimental dataset obtained, predictive equations to estimate the maximum crest amplitudes generated by partially submerged and submarine landslides were also developed. A comparison with the experiments of previous researchers and field survey data from the 2018 Palu Tsunami indicated that these equations can estimate reasonably well the height of the generated tsunami. It was also shown that the relative mass and initial position of the landslide are influential nondimensional parameters to determine the tsunami amplitudes generated.
  • Rafael Aránguiz; Miguel Esteban; Hiroshi Takagi; Takahito Mikami; Tomoyuki Takabatake; Matías Gómez; Juan González; Tomoya Shibayama; Ryo Okuwaki; Yuji Yagi; Kousuke Shimizu; Hendra Achiari; Jacob Stolle; Ian Robertson; Koichiro Ohira; Ryota Nakamura; Yuta Nishida; Clemens Krautwald; Nils Goseberg; Ioan Nistor
    Coastal Engineering Journal Informa {UK} Limited 62 (4) 445 - 459 2166-4250 2020/10 [Refereed]
  • Tomoyuki Takabatake; Ioan Nistor; Philippe St-Germain
    International Journal of Disaster Risk Reduction Elsevier BV 48 101573  2212-4209 2020/09 [Refereed]
     
    A large earthquake event generated from the nearby Cascadia Subduction Zone would possibly generate a sig-nificant tsunami event which could affect the west coast of Canada. In this study, to critically assess the effects of a tsunami on the District of Tofino on Vancouver Island, British Columbia, tsunami simulations were performed. As a result of tsunami propagation and inundation simulations, it was found that for earthquakes Mw9.0 or greater, the central part of the Esowista Peninsula on which Tofino is located will be completely inundated. The authors have also conducted tsunami evacuation simulations using an agent-based model developed by Taka-batake et al. (2017). This evacuation model considered Tofino's large fluctuation in residents due to seasonal tourism in a number of selected scenarios. Using the model, the authors also conducted a sensitivity analysis to investigate effects of the change in evacuation behaviour on the mortality rate. The results showed that a sig-nificant number of casualties would occur in Tofino, especially if an earthquake was to occur at night. It was also shown to be important to consider the capacity of evacuation buildings when directing evacuees, especially the elderly. In addition, the present study clarified that the effects of evacuation start time and route choices on the mortality rate would vary significantly according to a population distribution scenario even in the same study area. It was thus highlighted that conducting sensitivity analysis under varied population distribution scenarios is important to understand properly the uncertainty associated with tsunami evacuation.
  • Tomoyuki Takabatake; Kota Fujisawa; Miguel Esteban; Tomoya Shibayama
    International Journal of Disaster Risk Reduction ELSEVIER 47 101532  2212-4209 2020/08 [Refereed]
     
    Evacuation plays an important role in saving lives during tsunamis. Although evacuation by vehicle is generally not recommended, it could be helpful for vulnerable people who cannot walk fast (e.g. the disabled, elderly, or infants). In the present study, the authors developed an agent-based tsunami evacuation model that considers the behaviour of both pedestrians and car evacuees, which can be important to formulate effective evacuation plans. The model developed was validated through comparisons with the actual traffic jams observed at Tagajyo City, Japan during the 2011 Tohoku Earthquake Tsunami. The model was then applied to another coastal city in Japan (Shinguu City) to investigate the effectiveness of an evacuation plan that considers vehicle use for evacuation during a future Nankai-Tonankai Earthquake Tsunami. The simulated results indicate that considering the capacity of evacuation places and the choice of route is important for a successful evacuation, especially for a coastal area where the number of evacuees could exceed the total capacity of its evacuation buildings.
  • Improving the Evacuation Plan of Coastal Communities using Tsunami Evacuation Simulations: Case Study from Tagajyo, Japan
    Tomoyuki Takabatake; Tomoya Shibayama
    International Journal Sustainable Future for Human Security 7 (2) 24 - 34 2020/07 [Refereed]
  • Yosuke Tomii; Tomoya Shibayama; Yuta Nishida; Ryota Nakamura; Non Okumura; Hideaki Yamaguchi; Yosuke Tanokura; Yu Oshima; Natsuko Sugawara; Kota Fujisawa; Takayuki Wakita; Takahito Mikami; Tomoyuki Takabatake; Miguel Esteban
    Natural Hazards SPRINGER 103 (3) 3377 - 3399 0921-030X 2020/07 [Refereed]
     
    Volcanic ashfall can cause considerable social impacts to a wide geographical area. Given the challenge to predict volcanic eruptions, it is essential to simulate the dispersion of ash as soon as possible after an event and promptly estimate the distribution of deposits and necessary removal works. In this study, a series of procedures to improve the accuracy of the WRF-FALL3D model for the case of the eruption of Mt. Kusatsu-Shirane in 2018 are proposed, which were verified through field surveys of ash deposits, showing that the accuracy of the model can be improved by selecting a range of column heights and promptly conducting field surveys following an event. Also, a methodology to estimate the amount of work necessary to clear road networks and river channels is proposed, which was applied to a volcanic event similar to that of the Hoei eruption of Mt. Fuji in 1707. The results also emphasize the need to improve the estimation of column heights in the future, which is of paramount importance to ensure the safety and operational continuity of human infrastructure in the vicinity of major active volcanoes.
  • Gabriella Mauti; Jacob Stolle; Tomoyuki Takabatake; Ioan Nistor; Nils Goseberg; Abdolmajid Mohammadian
    Journal of Hydraulic Engineering ASCE-AMER SOC CIVIL ENGINEERS 146 (5) 0733-9429 2020/05 [Refereed]
     
    The entrainment of debris in tsunami-induced floods and storm surges can result in their accumulation on structures, a phenomenon known as debris damming. Such dams can decrease the stability of the affected structures by increasing the area of the flow obstruction, resulting in increased resistance forces. The formation of debris dams can also result in upstream water level rise. This study investigated the influence of idealized debris dam geometry on induced loads and changes in the free surface surrounding a circular column in steady-state flow conditions. Additionally, it investigated the resistance force coefficient of the debris dams. Results show that the presence of debris dams results in a significant increase of loading on structures. The increase in the resistance force was up to 7.7 times greater than the resistance force acting on the column with no debris present. The resistance force coefficients and the change in water depth were functions of the relative dam height and the Froude number, while the porosity had an insignificant impact on the effective resistance force coefficients.
  • Tomoyuki Takabatake; Miguel Esteban; Ioan Nistor; Tomoya Shibayama; Shinsaku Nishizaki
    International Journal of Disaster Risk Reduction ELSEVIER 45 101491  2212-4209 2020/05 [Refereed]
     
    The present study proposes a comprehensive investigation of the tsunami-evacuation plans for a popular coastal area considered to be at high risk for tsunami attack. If a coastal region constitutes a renowned sightseeing location or has a popular beach, numerous tourists and beach users could be at risk of a tsunami. However, tsunami risk management strategies have generally been developed considering only local residents, and the effects of the presence of tourist on the effectiveness of countermeasures have rarely been taken into account. To investigate changes in the effectiveness of tsunami countermeasures under different population scenarios, the authors further developed an existing agent-based tsunami evacuation simulation model. Through the application of this model to Yuigahama Beach in Kamakura City, Japan, it was found that the effectiveness of hard measures (i.e., elevating the road embankment) is slightly influenced by the numbers and types of evacuees who are present on or near the beach when a tsunami arrives. However, the effectiveness was greatly influenced by the type of soft measures (i.e., changing the evacuation behaviour) employed. It was also shown that, if there are many evacuees in a coastal area, soft measures merely aiming at early evacuation and guiding evacuees to the closest evacuation place via the shortest route could instead worsen the fatality rate. The present study thus sheds further light on the importance of establishing tsunami mitigation strategies that focus on the tourist population, in order to minimize the number of fatalities that could result from a future event.
  • Ryutaro Nagai; Tomoyuki Takabatake; Miguel Esteban; Hidenori Ishii; Tomoya Shibayama
    International Journal of Disaster Risk Reduction ELSEVIER 45 2212-4209 2020/05 [Refereed]
     
    Sea level rise is one of the major challenges facing humanity in the 21st century, and could compound the risks posed by tsunamis to coastal cities. The authors conducted computer simulations of tsunami inundation and propagation into Tokyo Bay, and analysed the risks that such events pose to the cities of Yokohama and Kawasaki, for different sea level rise scenarios . The results show that unless significant investment in improved coastal defences is made, the area that can potentially be flooded by such events will gradually increase in the course of the 21st century. However, the risk to the life of the inhabitants of these cities will broadly remain unchanged until sea levels become +1.0 m higher than at present. From then, the risk of casualties taking place will rapidly increase, as the depth and velocity of the tsunami wave will substantially rise. Such results provide some indication regarding the long-term planning strategy to manage coastal defences around Tokyo Bay, highlighting the need to eventually reinforce coastal defences and the important contribution of tsunami evacuation to minimize casualties during such events.
  • Go Hamano; Hidenori Ishii; Kotaro Iimura; Tomoyuki Takabatake; Jacob Stolle; Miguel Esteban; Tomoya Shibayama
    Coastal Engineering Journal Informa {UK} Limited 62 (2) 170 - 181 2166-4250 2020/04 [Refereed]
     
    Tsunamis can cause large damage to breakwaters and other protection structures placed along the coastline. The strong flows generated by such waves can move the armor units of composite breakwaters, leading to large impact forces on the caissons behind them. In the present work laboratory experiments were carried out in a flume to determine the forces that can result from such impacts. Then, an empirical equation that would allow the estimation of these forces was proposed, with the aim of facilitating the construction of returning walls and parapets situated on top of caissons.
  • Takayuki Suzuki; Yoshimitsu Tajima; Masashi Watanabe; Naoki Tsuruta; Hiroshi Takagi; Tomoyuki Takabatake; Kojiro Suzuki; Takenori Shimozono; Yoshinori Shigihara; Tomoya Shibayama; Shingo Kawaguchi; Taro Arikawa
    Coastal Engineering Journal TAYLOR & FRANCIS LTD 62 (2) 146 - 158 2166-4250 2020/04 [Refereed]
     
    Typhoon Faxai caused severe damages along the western shore of Tokyo Bay, Japan in September 2019. Retaining a relatively small radius of maximum wind, Faxai passed across the center of Tokyo Bay and caused intensive wind and waves. While the sea level anomaly recorded at several tide gauge stations along Tokyo Bay were at most 1 m, and no significant surge-induced inundation was found, locally concentrated damages and wave-induced hazards were observed around Yokohama, on the middle-western shore of Tokyo Bay. The observed inundation height around Yokohama was TP (Tokyo Peil) 4.2 m on average, and the highest runup, TP 10.8 m, was observed at a small hill directly behind the seawall in Fukuura, Yokohama. The estimated wave overtopping directions at each location varied from the northeast to southeast, and no clear correlation was found between the wave overtopping directions and the extent of observed coastal hazards. Based on these findings and investigations of recorded data such as wind and waves, it was deduced that locally concentrated damages and hazards around the middle western shore of Tokyo Bay may be explained by the unique features of a relatively compact Faxai and the topographical characteristics of Tokyo Bay.
  • Miguel Esteban; Jochem Jan Roubos; Kotaro Iimura; Jorrit Thomas Salet; Bas Hofland; Jeremy Bricker; Hidenori Ishii; Go Hamano; Tomoyuki Takabatake; Tomoya Shibayama
    Coastal Engineering ELSEVIER 157 0378-3839 2020/04 [Refereed]
     
    The accurate modelling of overtopping of coastal defences by tsunami waves is of vital importance for the formulation of disaster management strategies. To improve knowledge of this phenomena the authors conducted experiments on coastal structure overtopping using bores that were generated by a dam-break mechanism. Three types of structures were tested, namely a coastal dyke, a wall, and a wall of infinite height. The results highlight the necessity to consider the energy present in a bore to determine if a structure will be overtopped or not. As a result of these experiments an empirical formula to determine the height of overtopping given the incident bore height and velocity was validated. The study highlights the importance of clearly modelling the velocity and Froude number of a tsunami. Such experiments should be conducted on rough beds, for which a suitable Manning's n seems to be around 0.06 sm-1/3. The study also contrasted the results obtained to those of the ASCE7 method, and concludes that the Manning's n values recommended in ASCE7 are probably too low.
  • Anisa Shafiyya Harnantyari; Tomoyuki Takabatake; Miguel Esteban; Paolo Valenzuela; Yuta Nishida; Tomoya Shibayama; Hendra Achiari; Rusli; Abdul Gafur Marzuki; Muhammad Fadel Hidayat Marzuki; Rafael Aránguiz; Thit Oo Kyaw
    International Journal of Disaster Risk Reduction ELSEVIER 43 101389  2212-4209 2020/02 [Refereed]
     
    On September 28, 2018 significant tsunami waves, which are considered to have been generated by submarine landslides, struck the shorelines of Central Sulawesi, Indonesia. One month after the event, the authors conducted a questionnaire survey of the affected areas (Donggala Regency and Palu City) to collect information on the evacuation behaviour and tsunami awareness of local residents. In the present study, in addition to summarising the overall trend of the survey results using descriptive statistics, a chi-squared test was applied to analyse the significance of the relationship between tsunami awareness and evacuation behaviour and the demographic characteristics of respondents. The analysis of the results demonstrates that although the respondents generally have a high level of tsunami awareness, younger people and Donggala Regency residents have an overall lower understanding of the phenomenon. It was also found that 82.5% of the population evacuated after witnessing others evacuating during the event. As there was no official warning to residents before the arrival of the tsunami, this social trigger played a significant role in prompting evacuation and decreasing the number of casualties. The present study also revealed that many people faced congestion while evacuating (especially in Palu City). This highlights the need to introduce additional tsunami disaster mitigation strategies to ensure that all residents can swiftly evacuate during such incidents.
  • OHIRA Koichiro; TAKABATAKE Tomoyuki; MIKAMI Takahito; SHIBAYAMA Tomoya
    Journal of JSCE Japan Society of Civil Engineers 8 (1) 13 - 25 2020/02 [Invited]
     

     Water–level fluctuations resembling long period waves, which differ from normal wind waves, were observed immediately after the Tohoku earthquake of 2011 in multiple locations, such as lakes in Yamanashi Prefecture, the fjords of Norway, and other sites located far away from the epicenter. Not many research on similar abnormal water–level fluctuations have been conducted thus far and, in many cases, these studies have treated the phenomena as seiches. However, researchers have not established concrete wave generation mechanisms and evaluation methods, and their awareness of this phenomenon and disaster prevention remains low. In this study, the authors sought to select a quantitative impact assessment method and learn more about this phenomenon. The authors used previous research and eyewitness accounts to judge that onsite slosh dynamics caused the waves to generate, and the authors attempted to recreate this phenomenon using a 3-D slosh dynamic analysis. After comparing laboratory results to verify the validity of the analysis, the authors recreated past examples of waves and also made future predictions. As a result, the authors were able to recreate abnormal water–level fluctuations based on this method. In addition, the authors identified water damage risks to in-land lakes and waterways of inner parts of bays. These are different from risks posed by tsunamis. The waves are formed immediately after the onset of an earthquake.

  • J. Stolle; C. Krautwald; I. Robertson; H. Achiari; T. Mikami; R. Nakamura; T. Takabatake; Y. Nishida; T. Shibayama; M. Esteban; I. Nistor; N. Goseberg
    Canadian Journal of Civil Engineering 47 (1) 1 - 12 0315-1468 2020/01 [Refereed]
     
    © 2020, Canadian Science Publishing. All rights reserved. A field survey team went to Palu City, Indonesia in the aftermath of the September 28th, 2018 earthquake and tsunami to investigate its effects on local infrastructure and buildings. The study focused on the coast of Palu Bay, where a tsunami wave between approximately 2 and 7 m high impacted the local community as a result of several complex tsunami source mechanisms. The following study outlines the results, focused on loading caused by debris entrained within the inundating flow. Damage to timber buildings along the coast was widespread, though reinforced concrete structures for the most part survived, providing valuable insights into the type of debris loads and their effects on structures. The results of this survey are placed within the context of Canadian tsunami engineering challenges and are compared to the recently-released ASCE 7 Chapter 6 – Tsunami Loads and Effects, detailing potential research gaps and needs.
  • Tomoyuki Takabatake; Tomoya Shibayama; Miguel Esteban; Hendra Achiari; Nanda Nurisman; Mustarakh Gelfi; Trika Agnestasia Tarigan; Elsa Rizkiya Kencana; Muhammad Aldhiansyah Rifqi Fauzi; Satriyo Panalaran; Anisa Shafiyya Harnantyari; Thit Oo Kyaw
    Coastal Engineering Journal TAYLOR & FRANCIS LTD 61 (4) 423 - 443 2166-4250 2019/10 [Refereed]
     
    On the 22nd of December 2018 the shorelines of Sunda Strait, Indonesia, were hit by tsunami waves generated by the flank collapse of the Anak Krakatau volcano. The authors conducted a field survey of the affected areas in both Sumatra and Java islands to collect information on tsunami inundation and run-up heights, damage patterns at each coastal community, and the evacuation behaviour and tsunami awareness of the affected people. The survey results showed that in Sumatra island inundation heights of more than 4 m were measured along the coastline that was situated to the north-north-east of Anak Krakatau, while less than 4 m were measured along the north-western direction. Inundation heights of over 10 m were measured at Cipenyu Beach (Pandeglang Regency) in Java island (south-south-eastern direction from Anak Krakatau). A questionnaire survey conducted by the authors revealed residents' perception of danger and evacuation patterns during the event. The results indicate the importance of having an operational tsunami warning system in Sunda Strait and the establishment of an appropriate evacuation plan so that residents can start evacuation immediately and reach a safe place without facing severe congestion along evacuation routes.
  • Takahito Mikami; Tomoya Shmayama; Miguel Esteban; Tomoyuki Takabatake; Ryota Nakamura; Yuta Nishida; Hendra Achiari; Rusli; Abdul Gafur Marzuki; Muhammad Fadel Hidayat Marzuki; Jacob Stolle; Clemens Krautwald; Ian Robertson; Rafael Aranguiz; Koichiro Ohira
    Pure and Applied Geophysics SPRINGER BASEL AG 176 (8) 3291 - 3304 0033-4553 2019/08 [Refereed]
     
    On September 28, 2018, a large earthquake and its accompanying tsunami waves caused severe damage to the coastal area of Palu Bay, in the central western part of Sulawesi Island, Indonesia. To clarify the distribution of tsunami inundation and run-up heights, and damage to coastal communities due to the tsunami, the authors conducted a field survey 1 month after the event. In the inner part of Palu Bay tsunami inundation and run-up heights of more than 4 m were measured at many locations, and severe damage by the tsunami to coastal low-lying settlements was observed. In the areas to the north of the bay and around its entrance the tsunami inundation and run-up heights were lower than in the inner part of the bay. The tsunami inundation distance depended on the topographical features of coastal areas. The southern shore of the bay experienced a longer inundation distance than other shores, though generally severe damage to houses was limited to within around 200 m from the shoreline. The main lessons that can be learnt from the present event are also discussed.
  • Nobuhito Mori; Tomohiro Yasuda; Taro Arikawa; Tomoya Kataoka; Sota Nakajo; Kojiro Suzuki; Yusuke Yamanaka; Adrean Webb; Tomoyuki Takahashi; Sooyoul Kim; Susumu Araki; Yoko Shibutani; Takashi Yamano; Daiki Sakai; Tomohiro Takagawa; Naoki Tsuruta; Shingo Kawaguchi; Syota Asahi; Takashi Fujiki; Takumu Iwamoto; Yu Chida; Tomoya Shibayama; Miguel Esteban; Tomoyuki Takabatake; Ryota Nakamura; Kohji Uno; Tetsuya Kakinoki; Yasuo Nihei; Daisuke Inazu; Takaaki Shigematsu; Kazunori Sameshima; Kazuhiko Honda; Daiki Satomura; Ibuki Tsujisawa; Kentaro Kumagai; Noriki Sugahara; Shoichi Emoto; Yoshimitsu Tajima
    Coastal Engineering Journal 61 (3) 278 - 294 2166-4250 2019/07 
    Typhoon Jebi in 2018 caused severe damage along areas of Osaka Bay, Japan. After the storm, a Japan Society of Civil Engineers (JSCE) coastal survey group surveyed the coastal impacts and recorded watermarks inside Osaka Bay and along the Pacific. The maximum storm tide recorded by a tide gauge was 3.29 m at the Osaka Tide Station, which is a historical high for Osaka Bay. Coastal flooding consisted of both storm surge and wave run-up in almost all locations, with flooding exceeding 5 m and 12 m in elevation from mean sea level in the inner parts of Osaka Bay and along the Pacific coast, respectively. Coastal damage was severe in areas located outside of coastal barriers, such as ports and harbors, while residential areas were mainly well protected and spared due to coastal protection systems. In addition, some inland flooding occurred in the Kobe-Ashiya regions due to the storm surge propagating up several small rivers. This survey report summarizes the findings of the post-event survey by JSCE and analyzes the relation between maximum water level and resulting damage.
  • Tomoyuki Takabatake
    Natural Hazards Springer Science and Business Media LLC 98 (1) 267 - 291 0921-030X 2019/04
  • Jacob Stolle; Tomoyuki Takabatake; Go Hamano; Hidenori Ishii; Kotaro Iimura; Tomoya Shibayama; Ioan Nistor; Nils Goseberg; Emil Petriu
    Coastal Engineering Journal Informa UK Limited 61 (2) 241 - 255 2166-4250 2019/04
  • Tomoyuki Takabatake; Martin Mall; Miguel Esteban; Ryota Nakamura; Thit Oo Kyaw; Hidenori Ishii; Justin Joseph Valdez; Yuta Nishida; Fuma Noya; Tomoya Shibayama
    GEOSCIENCES MDPI 8 (11) 2076-3263 2018/11 [Refereed]
     
    Typhoon Jebi struck Japan on the 4 September 2018, damaging and inundating many coastal areas along Osaka Bay due to the high winds, a storm surge, and wind driven waves. In order to understand the various damage mechanisms, the authors conducted a field survey two days after the typhoon made landfall, measuring inundation heights and depths at several locations in Hyogo Prefecture. The survey results showed that 0.18-1.27 m inundation depths were caused by Typhoon Jebi. As parts of the survey, local residents were interviewed about the flooding, and a questionnaire survey regarding awareness of typhoons and storm surges, and their response to the typhoon was distributed. The authors also mapped the location of some of the containers that were displaced by the storm surge, aiming to provide information to validate future simulation models of container displacement. Finally, some interesting characteristics of the storm surge are summarized, such as possible overtopping at what had initially been thought to be a low risk area (Suzukaze town), and lessons learnt in terms of disaster risk management are discussed.
  • Stolle, J.; Takabatake, T.; Nistor, I.; Mikami, T.; Nishizaki, S.; Hamano, G.; Ishii, H.; Shibayama, T.; Goseberg, N.; Petriu, E.
    Coastal Engineering Elsevier BV 139 16 - 31 0378-3839 2018/09
  • Tomoyuki Takabatake; Tomoya Shibayama; Miguel Esteban; Hidenori Ishii
    Natural Hazards SPRINGER 92 (3) 1763 - 1788 0921-030X 2018/07 [Refereed]
     
    Tsunamis are some of the most destructive types of natural hazards that can affect coastal areas. To optimize tsunami mitigation measures, it is important to estimate the potential casualties that can result from one of these events. Taking into account tsunami awareness and the possible evacuation behavior of at-risk individuals is necessary to estimate the number of casualties, though most of the research carried out to date has not considered detailed evacuation behavior when conducting simulations. In the present study, the authors proposed a new approach to estimating the number of tsunami casualties, based on a tsunami evacuation simulation model that considers the evacuation behavior of local residents, tourists and beach users. Such behavior parameters were incorporated by analyzing the results from previous questionnaires surveys. The model was applied to Yuigahama Beach in Kamakura City, Japan, with the aim of assessing potential tsunami casualties and providing suggestions regarding tsunami mitigation measures. The authors conducted seven tsunami inundation simulations for different earthquake scenarios, and then casualties were estimated considering six different evacuation scenarios. Based on the simulation results, it appears particularly important to attempt to improve the intended evacuation behavior of both the local population and visitors. Particularly, providing information about safe places and the routes to reach them is necessary, as prompt evacuation and heading to higher ground were found to be insufficient behavior to save lives during a tsunami event.
  • Miguel Esteban; Toni Glasbergen; Tomoyuki Takabatake; Bas Hofland; Shinsaku Nishizaki; Yuta Nishida; Jacob Stolle; Ioan Nistor; Jeremy Bricker; Hiroshi Takagi; Tomoya Shibayama
    GEOSCIENCES MDPI AG 7 (4) 2076-3263 2017/12 [Refereed]
     
    Following the 2011 Tohoku Earthquake and Tsunami, Japanese tsunami protection guidelines stipulate that coastal defences should ensure that settlements are shielded from the coastal inundation that would result from Level 1 tsunami events (with return periods in the order of about 100 years). However, the overtopping mechanism and leeward inundation heights of tsunami bores as they hit coastal structures has received little attention in the past. To ascertain this phenomenon, the authors conducted physical experiments using a dam-break mechanism, which could generate bores that overtopped different types of structures. The results indicate that it is necessary to move away from only considering the tsunami inundation height at the beach, and also consider the bore velocity as it approaches the onshore area. The authors also prepared a simple, conservative method of estimating the inundation height after a structure of a given height, provided that the incident bore velocity and height are known.
  • TAKABATAKE Tomoyuki; SHIBAYAMA Tomoya
    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 公益社団法人 土木学会 73 (2) I_1507 - I_1512 1883-8944 2017/11 [Refereed]
     
     In this study, the authors developed a tsunami evacuation simulation model considering both local residents and visitors behavior. Using the simulation model, the effectivenesses of enhancing tenacity of a seawall and cooporations among evacuees are investigated in Yuigahama beach, Kamakura, Japan. It was found that enhancing tenacity of a seawall would decrease mortality rate. However, the effects would become minor when its hight is not sufficient. Guiding visitors to an evacuation place would also be helpful to decrease mortality rate but this may cause heavy congestions on the roads. When making a tsunami evacuation plan in a sightseeing location, it is necessary to consider effects of evacuees' congestions.
  • Jacob Stolle; Tomoyuki Takabatake; Takahito Mikami; Tomoya Shibayama; Nils Goseberg; Ioan Nistor; Emil Petriu
    GEOSCIENCES MDPI 7 (3) 2076-3263 2017/09 [Refereed]
     
    Debris loads during flood events have been well-documented by forensic engineering field surveys of affected communities. Research has primarily focused on debris impact loading and less emphasis has been placed into quantifying the loads and effects associated with debris damming, which occurs when solid objects accumulate at the front of structures. The formation of the debris dam has been shown to results in increased drag forces, backwater rise, and flow accelerations which can influence the stability of the structure. This study examined the formation of a debris dam in steady-state conditions of debris common to flood-prone communities. The study determined that the hydraulic conditions, in particular flow velocity, influenced the formation of the debris dam. Additionally, the study examined the influence of the blockage ratio on the backwater rise as well as the drag coefficient.
  • Tomoyuki Takabatake; Tomoya Shibayama; Miguel Esteban; Hidenori Ishii; Go Hamano
    International Journal of Disaster Risk Reduction ELSEVIER SCIENCE BV 23 1 - 14 2212-4209 2017/08 [Refereed]
     
    Currently, it is believed that evacuation is the most effective method of protecting lives from tsunamis, in particular after the events of the 2011 Tohoku Earthquake Tsunami. In many coastal areas tsunamis pose a threat not only to local residents, who know the area well, but also to visiting tourists, and thus it is important to consider both these groups when preparing evacuation plans. However, while numerous studies and simulations on tsunami evacuation have been made, research focusing on the influence of visitors on evacuation processes is limited. To clarify this the authors developed an agent-based tsunami evacuation model which considers the different behavior of local residents and visitors, which can estimate the evacuation time, number of individuals reaching each evacuation area, the location of bottlenecks and the number of casualties. The model was applied to study the case of Yuigahama Beach, Kamakura, Japan, with results indicating that the behavior and number of visitors have a significant impact on evacuation processes, especially the location of bottlenecks and the number of casualties. Results also show that heavy congestion will occur during evacuation in places where there are many visitors and thus, in such a situation, the decrease of the moving speed owing to the congestion needs to be appropriately taken into account to simulate the evacuation process. It can be concluded that reducing congestion (i.e., widening roads, guiding visitors to less congested roads) is a crucial countermeasure for a sightseeing location to reduce the casualties that can result from a tsunami.
  • 三上貴仁; 三上貴仁; 荒木優介; 田中直樹; 妹尾光平; 高畠知行; 柴山知也
    自然災害科学 36 (1) 43‐50  0286-6021 2017/05 [Refereed]
  • OHIRA Koichiro; TAKABATAKE Tomoyuki; MIKAMI Takahito; SHIBAYAMA Tomoya
    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 公益社団法人 土木学会 73 (1) 56 - 66 2017 [Refereed]
     
     Water level fluctuations resembling long period tsunami waves, which differ from normal wind waves, were observed immediately after the Great East Japan Earthquake of 2011 in multiple locations, such as lakes in Yamanashi Prefecture, the fjords of Norway, and other sites located far away from the epicenter. Very little research on similar abnormal water level fluctuations has been conducted thus far and, in many cases, these studies have treated the phenomena as seiches. However, researchers have not established concrete wave development mechanisms and evaluation methods, and their awareness of this phenomenon and disaster prevention remains low. In this study, we sought to select a quantitative impact assessment method and learn more about this phenomenon. We used previous research and eyewitness accounts to judge that onsite slosh dynamics caused the waves to develop, and we attempted to recreate this phenomenon using a 3-D slosh dynamic analysis. After comparing laboratory results to verify the validity of the analysis, we recreated past examples of waves and also made future predictions. As a result, we were able to recreate abnormal water level fluctuations based on this method. In addition, we identified water damage risks to inland lakes and waterways of inner parts of bays. These are different from risks posed by tsunamis. It is forms immediately after the onset of an earthquake.
  • TAKABATAKE Tomoyuki; ODA Yukinobu; ITO Kazunori; HONDA Takahide
    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 公益社団法人 土木学会 72 (1) 1 - 13 2185-4688 2016/05 [Refereed]
  • TAKABATAKE Tomoyuki; ODA Yukinobu; ITO Kazunori; HONDA Takahide
    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 公益社団法人 土木学会 71 (2) I_521 - I_526 2185-4688 2015 [Refereed]
  • TAKABATAKE Tomoyuki; ODA Yukinobu; ITO Kazunori; HONDA Takahide
    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 公益社団法人 土木学会 71 (2) I_259 - I_264 1883-8944 2015 [Refereed]
     
    When tsunami comes to seaside industrial areas, sea water will come into water channels and the sur-face of water will go up. If water surface reaches ceilings of the water channels, pressure will act on the ceilings. In this study, characteristics of the pressures and its evaluation methods are investigated through hydraulic experiments and numerical simulations. Experimental results show that when air is enclosed between the water surface and the ceiling, the maximum impulsive pressure becomes lower compared with the case where water surface touches directly the ceiling. The existing methods, usually used to estimate uplift pressures on bridge decks, are tested against experimental data. It is found that although the methods require some modifications, the maximum impulsive pressure can be estimated relatively well by using the methods. Furthermore, experimental results are compared with the simulation results from OpenFOAM. The comparisons show that OpenFOAM can successfully simulate the experimental results.
  • TAKABATAKE Tomoyuki; ITO Kazunori; ODA Yukinobu; HONDA Takahide
    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 公益社団法人 土木学会 70 (2) I_462 - I_467 2185-4688 2014 [Refereed]
  • HONDA Takahide; ODA Yukinobu; ITO Kazunori; WATANABE Masaaki; TAKABATAKE Tomoyuki
    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 公益社団法人 土木学会 70 (2) I_456 - I_461 2185-4688 2014 [Refereed]
  • HONDA Takahide; ODA Yukinobu; ITO Kazunori; ISHII Hiroyasu; TAKABATAKE Tomoyuki
    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 公益社団法人 土木学会 70 (2) I_981 - I_985 1884-2399 2014 [Refereed]
     
    The tsunami generated by the 2011 off the pacific coast of tohoku earthquake caused massive damage to coastal dikes. It is required for coastal dikes to increase the resistance of tsunami. Although some coastal dikes resistant to tsunami are proposed, embankment materials which can enhance the resistance of coastal dikes are not identified clearly. In this study, embankment materials of a coastal dike which can enhance its resistance are investigated by conducting hydraulic physical model tests. The results of hydraulic tests showed that embankment mixed by cement or clay could enhance the resistance of tsunami. The numerical simulation was also conducted to clarify the erosion process of lean cement mixed soil.
  • HONDA Takahide; ODA Yukinobu; ITO Kazunori; OBI Hirotoshi; TAKABATAKE Tomoyuki
    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 公益社団法人 土木学会 70 (2) I_961 - I_965 1884-2399 2014 [Refereed]
     
    This study aims to investigate collision forces of drifted objects due to tsunami acting on cylindrical structures. The hydraulic experiments were conducted to investigate the characteristics of collision forces to columns. Through hydraulic experiments, it is clearly confirmed that the peak values of collision forces depend on the rigidity of drifted objects. This result suggests that when the drifted object has low rigidity such as cars or boats, the collision forces acting on structures are relatively small. The numerical simulation of collision forces of a drifted car to column structures were also conducted by using a 3-D simulation model based on SPH method. The simulation results show that the behavior of the drifted car and collision forces are simulated qualitatively well.
  • ODA Yukinobu; HONDA Takahide; TAKABATAKE Tomoyuki
    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 公益社団法人 土木学会 70 (2) I_796 - I_800 1884-2399 2014 [Refereed]
     
    The tsunami force acting on a land structure generated by the run-up tsunami was generally evaluated from the maximum inundation depth of the passing run-up tsunami, which is estimated on the supposition that the structure does not exist. However, the maximum depth does not always accompany the maximum tsunami force, e.g., in the case that the inundation depth gradually increase. Therefore the time series evaluation of the tsunami force not with the maximum depth is required. In this study, the physical model experiment to examine the tsunami forces acting on a wall structure in time series was conducted. It is found that the time series of the tsunami force was expressed with the inundation depth and the velocity of the passing tsunami at the same moment.
  • TAKABATAKE Tomoyuki; ODA Yukinobu; ITO Kazunori; HONDA Takahide
    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 公益社団法人 土木学会 70 (2) I_341 - I_345 1884-2399 2014 [Refereed]
     
    This paper studies about inundation disasters via drainage channels induced by tsunami, which may occur even if high seawalls protect inside areas from tsunami. Since the inundation disasters may lead to losses of evacuation routes and be an obstacle to the safety measures, it is important to consider the countermeasures for industrial facilities from the view points of business continuity. An 1-D pipe network flow model, which is generally used for a surging analysis, was improved to evaluate the amount of overflows from pits of a channel network. In this study, the validity of the improved 1-D model was verified through comparison with a hydraulic experiment. Since the improved 1-D model doesn't require much computational load compared with 3-D simulation model, it is quite practical from the perspective of BCP.
  • 高畠 知行; 本田 隆英; 織田 幸伸
    土木学会論文集. B2, 海岸工学 土木学会 69 (2) 381 - 385 1884-2399 2013 [Refereed]
  • HOSHINO Sayaka; SHIBAYAMA Tomoya; ESTEBAN Miguel; TAKAGI Hiroshi; MIKAMI Takahito; TAKABATAKE Tomoyuki
    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 公益社団法人 土木学会 69 (2) I_994 - I_999 2185-4688 2013 [Refereed]
     
    Sea level rise and an increase in typhoon intensity are two of the expected consequences from future climate change. In the present work a methodology to change the intensity of tropical cyclones in Japan was developed, which can be used to assess the inundation risk to different areas of the country. An example of how this would affect one of the worst typhoons to hit the Tokyo Bay area in the 20th century was thus developed, highlighting the considerable dangers associated with this event, and how current sea defences could be under danger of failing by the end of the 21st century. The present results show how this level of defences could be inadequate by the end of the 21st century. Possible solutions to this problem involve raising the level of existing defences or increasing the ground level of reclamated area. The cost of possible countermeasures are calculated and are compared with possible economic loss under flooding. The cost is less than 1 % of possible economic loss in Tokyo metropolitan and 6 % in Kanagawa prefecture.
  • TAKABATAKE Tomoyuki; SHIBAYAMA Tomoya
    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 公益社団法人 土木学会 68 (2) I_894 - I_899 2185-4688 2012 [Refereed]
     
    The purpose of this paper is to clarify the risk of storm surge and tsunami in Tokyo port by using three different numerical simulations, a storm surge simulation, a tsunami simulation and an overland inundation simulation. In the storm surge simulation, storm surge behavior in Tokyo port was calculated by considering many typhoon courses. The model typhoon used in the calculation is the Ise bay typhoon(1959), reproduced by using Myers equation. As a result, the maximum storm surge height in Tokyo port and the typhoon course which occurs are clarified. In the tsunami simulation, tsunami behavior in Tokyo bay is calculated under the consideration of three earthquakes. The target earthquakes are Genroku, Miura Peninsula and Kamogawa and Keicho earthquake. Amongst them, the earthquake which induces the highest tsunami in Tokyo port is the Keicho earthquake. In that case, the tsunami height around Tokyo port is about 1.5m. In the simulation, the initial tsunami heights were calculated by using the model of Manshinha and Smylie(1971). Overland inundation is simulated under the impact of the Keicho earthquake. The results show the western Koto Delta, Southern Koto Delta, East Shinagawa and many other areas outside Tokyo port are under the risk of inundation. For the overland inundation simulation, a 5m mesh topography data was used, which enables the display of micro scale inundation. The overall results show that it is necessary to reconsider disaster management plans in Tokyo, as current counter-measures might not be sufficient to protect certain areas against all foreseeable threats.

Books etc

  • Coastal Disaster Surveys and Assessment for Risk Management
    (Contributor)2022/12
  • 柴山 知也; 高木 泰士; 鈴木 崇之; 三上 貴仁; 高畠 知行; 中村 亮太; 松丸 亮 (Joint work2.1，付録A)森北出版 2021/05 9784627496613 iii, 197p
  • 水理学解説
    高畠 知行 (Joint work)2019/09

Conference Activities & Talks

  • 来訪者を対象とした津波の避難経路誘導効果の検証
    山口啓太; 高畠知行
    2023年度関西土木工学交流発表会  2023/11
  • 車避難を考慮した津波避難施設の新設効果に関する検討
    長谷川七海; 高畠知行
    2023年度関西土木工学交流発表会  2023/11
  • 道路閉塞が津波避難に及ぼす影響の分析―鎌倉市・逗子市・藤沢市を対象として―
    高畠知行; Han Chenxi Dawn; Esteban Miguel; 柴山知也
    第69回海岸工学講演会  2022/11
  • Adaptation to sea level rise: A comparative analysis of current examples of adaptation around the planet
    Miguel Esteban; Ezekiel Grant; Vu Quynh Anh Cao; Ven Paolo Valenzuela; Joe Chang; Richard Crichton; Jeremy D. Bricker; Christopher Chadwick; Hiroshi Takagi; Lau Jamero; Nguyen Danh Thao; Takahito Mikami; Motoharu Onuki; John Erick Bersola Avelino; Dyah Fatma; Tomoyuki Takabatake; Tomoya Shibayama
    WCRP Sea Level 2022: Advancing Science, Connecting Society  2022/07
  • Experimental and Numerical Investigation of Tsunami Behavior Around Two Upright Sea Dikes with Different Heights  [Invited]
    飯村浩太郎; 柴山知也; 高畠知行; Esteban Miguel
    第68回海岸工学講演会  2021/11
  • 台風の移動速度の変化が高波の波高に与える影響
    稲垣直人; 柴山知也; Esteban Miguel; 高畠知行
    第68回海岸工学講演会  2021/11
  • 地すべり津波を対象とした平面水槽による水理模型実験
    高畠知行; Dawn Chenxi Han; Valdez Justin Joseph Panlilio; 稲垣直人; 澤辺大輔; Zhang Tingyu; 木場隆文; Zhao Bingchan・Mäll Martin; Esteban Miguel; 柴山知也
    第68回海岸工学講演会  2021/11
  • Reproducibility of tsunami overflow experiments using Open FOAM
    Daisuke Sawabe; Miguel Esteban; Tomoyuki Takabatake; Tomoya Shibayama
    30th International Tsunami Symposium  2021/07
  • An integrated simulation for estimation of casualties from earthquake and tsunami  [Not invited]
    Dawn Chenxi Han; Tomoyuki Takabatake; Miguel Esteban; Tomoya Shibayama
    30th International Tsunami Symposium  2021/07
  • 陸上・半没水・海底地すべり津波を対象とした水理模型実験  [Not invited]
    高畠知行; Mäll Martin; Han Chenxi Dawn; 稲垣直人; 岸崎大知; Esteban Miguel; 柴山知也
    第67回海岸工学講演会  2020/10
  • Development of Deep-Learning Based Wave Prediction Model and Its Applicability to Japanese Coasts
    馬渡竜輝; 高畠知行; KYAW Thit Oo; 柴山知也; 澁谷容子; 小竹康夫
    海洋工学シンポジウム(CD-ROM)  2020/09
  • A Investigation of Edge Waves Generated by Tsunamis on the Coastline of the Kujukuri Beach
    小谷野賢太朗; 高畠知行; 柴山知也
    海洋工学シンポジウム(CD-ROM)  2020/09
  • The Effect of Translate Speed of Typhoons on Wind Waves
    稲垣直人; 柴山知也; 高畠知行; ESTEBAN Miguel
    海洋工学シンポジウム(CD-ROM)  2020/09
  • Laboratory Study of Tsunami Behavior around Two Upright Sea Dikes with Different Heights
    飯村浩太郎; 柴山知也; 高畠知行; ESTEBAN Miguel; 石井秀憲; 濱野剛
    海洋工学シンポジウム(CD-ROM)  2020
  • 2018年スンダ海峡津波による沿岸域の被害と住民避難行動の実態  [Not invited]
    高畠知行; 柴山知也; MEsteban Miguelほか
    第66回海岸工学講演会  2019/10
  • 避難者の特性と時空間的分布が津波対策効果に及ぼす影響の評価  [Not invited]
    高畠知行; 柴山知也; Esteban Miguel; Nistor Ioan; 西崎普策
    第65回海岸工学講演会  2018/11
  • 冨井遥亮; 柴山知也; 脇田尚幸; 高畠知行; 西崎晋策
    日本自然災害学会学術講演会講演概要集  2018
  • 柴山知也; 中村亮太; 西崎晋策; 高畠知行
    海洋工学シンポジウム(CD-ROM)  2018
  • 石井秀憲; 柴山知也; 高畠知行
    海洋工学シンポジウム(CD-ROM)  2018
  • 高畠知行; 柴山知也
    海洋工学シンポジウム(CD-ROM)  2018
  • 伊藤一教; 高畠知行; 小俣哲平
    土木学会年次学術講演会講演概要集(CD-ROM)  2016/08
  • 高畠知行; 織田幸伸; 伊藤一教; 本田隆英
    土木学会年次学術講演会講演概要集(CD-ROM)  2015/08
  • 高畠知行; 織田幸伸; 伊藤一教; 本田隆英
    土木学会年次学術講演会講演概要集(CD-ROM)  2014/08
  • 本田隆英; 織田幸伸; 伊藤一教; 石井裕泰; 高畠知行
    土木学会年次学術講演会講演概要集(CD-ROM)  2014/08
  • 織田幸伸; 高畠知行
    土木学会年次学術講演会講演概要集(CD-ROM)  2014/08
  • 高畠知行; 本田隆英; 織田幸伸; 伊藤一教
    土木学会年次学術講演会講演概要集(CD-ROM)  2013/08
  • 本田隆英; 高畠知行; 織田幸伸; 伊藤一教
    土木学会年次学術講演会講演概要集(CD-ROM)  2013/08
  • 朝倉塁; 阿部郁男; 安藤亮輔; 池間仁子; 石倉覚; 石辺岳男; 今井健太郎; 今村文彦; 大年邦雄; 小笠原敏記; 奥村与志弘; 柿沼太郎; 後藤和久; 小松原純子; 小松原琢; 近藤誠司; 佐々木幹夫; 佐竹健治; 鴫原康子; 鴫原良典; 柴山知也; 城下英行; 杉本卓司; 鈴木進吾; 鈴木介; 高橋重雄; 高橋智幸; 高畠知行; 都司嘉宣; 中野晋; 中村有吾; 行谷佑一; 西村裕一; 西山昭仁; 橋本貴之; 原田賢治; 原田智也; 藤井雄士郎; 藤間功司
    津波工学研究報告  2012/03
  • 柴山知也; 高畠知行
    日本沿岸域学会研究討論会講演概要集(CD-ROM)  2012
  • 柴山 知也; 高畠 知行
    地球環境シンポジウム講演集  2010/08  土木学会

MISC

  • Development of a Digital Twin of Kamakura City in Unity
    Yusuke Iwahiro; Michael Stump; Kevin Creff; Tomoyuki Takabatake; Miguel Esteban; Tomoya Shibayama  Proceedings of the 11th International Conference on Asian and Pacific Coasts  2023/11  [Refereed]
  • Adaptation to Sea Level Rise: A Comparative Analysis of Current Examples of Adaptation Around the Planet
    Miguel Esteban; Anh Cao; Paolo Valenzuela; Ezekiel GrantRichard Crichton; Jeremy Bricker; Joe Chang; Laurice Jamero; Christopher Chadwick; Nguyen Danh Thao; Hiroshi Takagi; Takahito Mikami; Motoharu Onuki; Lilian Yamamoto; Erick Avelino; Dyah Fatma; Tomoyuki Takabatake; Tomoya Shibayama  Proceedings of the 11th International Conference on Asian and Pacific Coasts  2023/11  [Refereed]
  • Influence of Road Blockage on Loss of Lives from a Tsunami
    Tomoyuki Takabatake; Keita Yamaguchi; Nanami Hasegawa  Proceedings of the 11th International Conference on Asian and Pacific Coasts  2023/11  [Refereed]
  • Influence of Car Evacuation on the Effective Location of a Tsunami Evacuation Shelter
    Nanami Hasegawa; Tomoyuki Takabatake  Proceedings of the 11th International Conference on Asian and Pacific Coasts  2023/11  [Refereed]
  • Three-dimensional physical modeling of landslide-generated tsunamis
    Takabatake, T; Han, D. C; Esteban, M; Shibayama, T  Proceedings of the 38th International Conference on Coastal Engineering (ICCE)  2022/12  [Refereed]
  • Development of smartphone application to support tsunami evacuation
    Han, D. C; Takabatake, T; Esteban, M; Shibayama, T  Proceedings of the 38th International Conference on Coastal Engineering (ICCE)  2022/12  [Refereed]
  • Towards Informed Tsunami Evacuation Management – A Direct Comparison between Agent-Based and GIS-Based Tsunami Evacuation Models
    Joseph Kim; Tomoyuki Takabatake; Ioan Nistor; Tomoya Shibayama  Proceedings of the 39th IAHR World Congress  2022/07  [Refereed]
  • Experimental Analysis on Landslide Generated Tsunamis
    Tomoyuki Takabatake; Daichi Kizhizaki  Proceedings of the 31st International Ocean and Polar Engineering Conference  2021/06  [Refereed]
  • Naoto Inagaki; Tomoya Shibayama; Miguel Esteban; Tomoyuki Takabatake  Natural Hazards  105-  (1)  841  -858  2021/01  [Refereed]
  • Transient dam-break wave loading on pipelines near sloping bed
    Behnaz Ghodoosipour; Tomoyuki Takabatake; Ioan Nistor; Majid Mohammadian; Go Hamano; Hidenori Ishii; Kotaro Imura; Tomoya Shibayama  Proceedings of virtual Conference on Coastal Engineering, 2020  2020/10  [Refereed]
  • Developing Agent-Based Tsunami Evacuation Model for Pedestrian and Car Evacuees
    Tomoyuki Takabatake; Kota Fujisawa; Miguel Esteban; Tomoya Shibayama  Proceedings of virtual Conference on Coastal Engineering, 2020  2020/10  [Refereed]
  • Field Survey of 2018 Krakatau tsunami
    Miguel Esteban; Hendra AchiariTomoyuki; Takabatake; Ryota Nakamura; Takahito Mikami; Satriyo Panalaran; Mustarakh Gelfi; Naoto Inagaki; Yuta Nishida; Christopher Chadwick; Kota Oizumi; Tomoya Shibayama  Proceedings of virtual Conference on Coastal Engineering, 2020  2020/10  [Refereed]
  • Experimental Investigation on the Influence of Arrangement of Buildings on Tsunami Run-up Flow
    Hidenori Ishiii; Tomoyuki Takabatake; Miguel Esteban; Go Hamano; Kotaro Iimura; Tomoya Shibayama  Proceedings of the Coastal Structures Conference 2019  2019/09  [Refereed]
  • Laboratory Study of Tsunami Behavior around Two Upright Sea Dikes with Different Heights
    Kotaro IimuraTomoya ShibayamaTomoyuki TakabatakeMiguel EstebanHidenori IshiiiGo Hamano  Proceedings of the Coastal Structures Conference 2019  2019/09  [Refereed]
  • Yuta Nishida; Tomoya Shibayama; Tomoyuki Takabatake; Miguel Esteban  Proceedings of the 10th International Conference on Asian and Pacific Coasts  503  -508  2019/09  [Refereed]
  • Tsunami casualty estimation considering intended evacuation behavior of local residents and visitors
    Takabatake Tomoyuki; Shibayama Tomoya; Esteban Miguel  Proceedings of the 36th International Conference on Coastal Engineering  2018/08  [Refereed]
  • H. Takagi; T. T. Anh; L. T. Anh; N. D. Thao; T. Takabatake; R. Nakamura  IOP Conference Series: Earth and Environmental Science  167-  2018/07  [Refereed]
  • Jacob Stolle; Tomoyuki Takabatake; Go Hamano; Hidenori Ishii; Kotaro Limura; Tomoya Shibayama; Ioan Nistor; Nils Goseberg; Emil Petriu  Proceedings of the 7th International Conference on the Application of Physical Modelling in Coastal and Port Engineering and Science (Coastlab)  61-  (2)  241  -255  2018/05  [Refereed]
  • Overtopping of structures by tsunami bores
    Esteban, M; Glasbergen, T; Takabatake, T; Hofland, B; Stolle, J; Nishida, Y; Nihizaki, S; Bricker, J; Nistor, I; Shibayama, T  Proceedings of the 7th International Conference on the Application of Physical Modelling in Coastal and Port Engineering and Science (Coastlab)  2018/05  [Refereed]
  • Stolle Jacob; Nistor Loan; Takabatake Tomoyuki; Goseberg Nils; Petriu Emil; Shibayama Tomoya  6th International Disaster Mitigation Specialty Conference 2018, Held as Part of the Canadian Society for Civil Engineering Annual Conference 2018  70  -80  2018  [Refereed]
  • Shinsaku Nishizaki; Tomoya Shibayama; Tomoyuki Takabatake; Ryota Nakamura  Proceedings of the 9th International Conference on Asian and Pacific Coasts  2017/11  [Refereed]
  • T. Takabatake; T. Shibayama  Proceedings of the 9th International Conference on Asian and Pacific Coasts  2017/11  [Refereed]
  • Takahide Honda; Yukinobu Oda; Kazunori Ito; Hiroyasu Ishii; Tomoyuki Takabatake  Proceedings of Coastal Structures and Solutions to Coastal Disasters 2015  2017/07  [Refereed]
  • Tomoyuki Takabatake; Yukinobu Oda; Kazunori Ito; Takahide Honda  Proceedings of the 35th International Conference on Coastal Engineering  2016/01  [Refereed]
  • 高畠知行; 織田幸伸; 伊藤一教; 本田隆英  大成建設技術センター報(CD-ROM)  (47)  ROMBUNNO.34  2014/12
  • 織田幸伸; 高畠知行  大成建設技術センター報(CD-ROM)  (47)  ROMBUNNO.33  2014/12
  • Takahito Mikami; Tomoyuki Takabatake  Coastal Disasters and Climate Change in Vietnam: Engineering and Planning Perspectives  303  -319  2014/06
  • D. P C Laknath; Kazunori Ito; Takahide Honda; Tomoyuki Takabatake  Proceedings of the Coastal Engineering Conference 2014  2014/01  [Refereed]
  • Takahide Honda; Yukinobu Oda; Kazunori Ito; Masaaki Watanabe; Tomoyuki Takabatake  Proceedings of the Coastal Engineering Conference  2014-January-  2014/01  [Refereed]
  • Tomoyuki Takabatake; Takahide Honda; Yukinobu Oda; Kazunori Ito  Proceedings of the International Offshore and Polar Engineering Conference  17  -24  2014/01  [Refereed]
  • 台風1216号による長崎県の高潮を対象とした数値シミュレーション
    ラクナスD.P; 伊藤一教; 本田隆英; 高畠知行  大成建設技術センター報(CD-ROM)  (46)  40_1  -40_8  2013/12  [Refereed]
  • 高畠知行; 本田隆英; 織田幸伸; 伊藤一教  大成建設技術センター報(CD-ROM)  (46)  ROMBUNNO.37  2013/12
  • Sayaka Hoshino; Miguel Esteban; Takahito Mikami; Tomoyuki Takabatake; Tomoya Shibayama  Proceedings of Coastal Structures 2011  2013/05
  • T. Shibayama; K. Ohira; T. Takabatake  Proceedings of the 7th International Conference on Asian and Pacific Coasts, APAC 2013  764  -766  2013  [Refereed]
  • Koichiro Ohira; Tomoya Shibayama; Miguel Esteban; Takahito Mikami; Tomoyuki Takabatake; Makito Kokado  Proceedings of the Coastal Engineering Conference  2012/12  [Refereed]
  • Sayaka Hoshino; Miguel Esteban; Takahito Mikami; Tomoyuki Takabatake; Tomoya Shibayama  Proceedings of the Coastal Engineering Conference  2012/12  [Refereed]

Industrial Property Rights

Awards & Honors

  • 2021/04 文部科学省 文部科学大臣表彰 若手科学者賞
     
    受賞者: 高畠知行
  • 2019/06 前田記念工学振興財団 山田一宇賞
     
    受賞者: 高畠 知行
  • 2018/06 土木学会 論文奨励賞
     
    受賞者: 高畠知行
  • 2015/11 土木学会 第70回年次学術講演会優秀講演者表彰
     
    受賞者: 高畠知行
  • 2014/11 土木学会 海岸工学論文賞
     
    受賞者: 織田幸伸;本田隆英;高畠知行
  • 2014/11 土木学会 第69回年次学術講演会優秀講演者表彰
     
    受賞者: 高畠知行
  • 2014/01 大成建設技術センター 論文奨励賞
     
    受賞者: 高畠知行
  • 2013/11 土木学会 第68回年次学術講演会優秀講演者表彰
     
    受賞者: 高畠知行

Research Grants & Projects

  • Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research
    Date (from‐to) : 2020/10 -2026/03 
    Author : 柴山 知也; 三上 貴仁; 高畠 知行; 中村 亮太
     
    オタワ大学のニストール教授と協力して研究を進めた。コロナウィルスの伝播の影響により、直接には訪問できなかったため、密接に連絡を取りつつ研究を進めた。全体として、北極圏の気候、高波、高潮モデルの高度化を行い、PolarWRFとFVCOM-SWAVEを組み合わせた数値モデルの開発を進めた。風の算定までは概ねできるようになり、温暖化後に氷が消失した後の地形を再現するための地形のモデル内での再現を進めた。波浪については, 観測ステーションにおける計測結果が限られているために,観測衛星による観測値を比較対象として使用する可能性を検討するため、波浪観測ができる衛星のデータを入手し、解析を進めている。カナダの北極圏沿岸域では氷山崩壊など地すべりによる津波の危険性があるため、これを考慮できるモデルの開発を進め、3次元固気液三相流体解析ツール（OpenFOAM）を用いた数値解析を応用している。氷山崩壊による津波発生機構については、津波水槽を用いた実験結果も用いて研究を進めた。部分的に水没した地すべり津波を対象とした3次元室内実験を行い，津波の特性を調べるとともに，発生する津波の水面高さの予測式を開発した．その結果、地すべり滑走方向に発生する波は横方向に発生する波よりも高いが、その他の波の性質は大きく変化しないことがわかった。実験結果に基づき，予測式を導出し，部分的に浸水した地すべり津波の高さを正確に推定できることを確認した。導き出された予測式は、迅速な津波危険度評価を行う際に有用である。災害に関する基礎知識や地域での災害の備えは、避難行動の特性に大きな影響を与えると考えられるため、状況を地域ごとに正確に把握し、避難行動モデルに反映させていく必要がある。北極圏に住む人々の災害意識や備えの程度を分析した例は過去にないため、まず避難行動モデルの作成を進めた。
  • 高齢者・障害者の車避難を前提とした津波避難施設の最適配置方法の考案
    公益財団法人 三菱財団：社会福祉事業・研究助成
    Date (from‐to) : 2022/10 -2023/09 
    Author : 高畠知行
  • 道路閉塞が地震・津波の人的被害に及ぼす影響の解明
    公益財団法人 日立財団：倉田奨励金
    Date (from‐to) : 2022/03 -2023/03 
    Author : 高畠知行
  • 東京都及び全国を対象とした人々の居住地選択意向の解明
    一般財団法人 民間都市開発推進機構 都市研究センター：令和3年度都市再生研究助成事業
    Date (from‐to) : 2021/11 -2023/03 
    Author : 高畠知行
  • 複数の海底地すべりによる津波の増幅機構の解明とその予測手法の開発
    日本学術振興会：学術研究助成基金助成金・若手研究
    Date (from‐to) : 2019/04 -2023/03 
    Author : 高畠 知行
  • 新しい地震津波ハザードマップの開発
    公益財団法人 前田記念工学振興財団：研究助成
    Date (from‐to) : 2021/04 -2022/03 
    Author : 高畠 知行
  • 津波避難シミュレーションを用いたグリーンインフラによる津波減災効果の解明
    日本生命財団：ニッセイ財団環境問題研究助成 若手研究・奨励研究
    Date (from‐to) : 2020/10 -2021/09 
    Author : 高畠 知行
  • 来訪者の津波避難行動特性の解明と数値予測手法の改善
    公益財団法人 大林財団：研究助成
    Date (from‐to) : 2019/04 -2020/03 
    Author : 高畠 知行
  • 防潮壁による陸上構造物への津波被害低減効果の検証
    日本学術振興会：若手研究者海外挑戦プログラム
    Date (from‐to) : 2017/10 -2018/03 
    Author : 高畠 知行

Teaching Experience

  • Practices on Hydraulics ⅠPractices on Hydraulics Ⅰ Kindai University
  • Hydraulics ⅠHydraulics Ⅰ Kindai University
  • Practics of Elementary SurveyingPractics of Elementary Surveying Kindai University
  • Synthetic Seminar 2Synthetic Seminar 2 Kindai University
  • Synthetic Seminar 1Synthetic Seminar 1 Kindai University
  • Advanced Coastal Disaster PreventionAdvanced Coastal Disaster Prevention Kindai University
  • Advanced Coastal and Port EngineeringAdvanced Coastal and Port Engineering Kindai University
  • Coastal EngineeringCoastal Engineering Kindai University
  • Applied PhysicsApplied Physics Kindai University

Others

  • 2022/04 -2023/03  巨大地震津波を対象とした高精度な津波の人的被害評価 
    近畿大学学内研究助成金 奨励研究助成金 SR08 研究内容：建物倒壊を考慮した場合の地震津波の人的被害算定をマルチエージェントシステムに基づく地震津波避難シミュレーションモデルを用いて実施した．

Other link

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