2011 TOHOKU TSUNAMI RUNUP AND DEVASTATING DAMAGES AROUND YAMADA BAY, IWATE: SURVEYS AND NUMERICAL SIMULATION

Proceedings of the International Conference on Coastal Engineering

Hermann M. Fritz⁵  Haijiang Liu⁴  Tomohiro Takagawa²  Yoshimitsu Tajima¹  Akio Okayasu³  Shinji Sato¹  Takenori Shimozono³ 

[1] University of Tokyo;Port and Airport Research Institute;Tokyo University of Marine Science and Technology;Zhejiang University;Georgia Institute of Technology

关键词: 2011 Tohoku Tsunami;    Yamada Town;    tsunami survey;    tsunami simulation;    GPS wave gauge;   

DOI  :  10.9753/icce.v33.currents.4

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

Distributions of inundation and runup height for the 2011 off the Pacific coast of Tohoku Earthquake Tsunami were measured in and outside Yamada Bay located at the center of Iwate Prefecture, Japan. Numerical simulations were conducted to reproduce flow, inundation and runup height distributions. Surface elevation profiles recorded by the GPS wave gauges were used as the offshore boundary condition. In order to investigate characteristics of tsunami response to different geomorphological features, frequency separation was tried for the tsunami incident wave. It was found that the high frequency component was responsible for large tsunami height at narrow inlets and open bays, whereas the low frequency component had significant influence for inundation in closed bays.

【 授权许可】

Unknown