著者
加藤 史訓 諏訪 義雄 鳩貝 聡 本間 基寛 内田 良始
出版者
公益社団法人 土木学会
雑誌
土木学会論文集B2(海岸工学) (ISSN:18842399)
巻号頁・発行日
vol.68, no.2, pp.I_326-I_330, 2012 (Released:2012-11-15)
参考文献数
4

We proposed a method to estimate tsunami inundation area according to tsunami height predicted by Japan Meteorological Agency. Fault models that corresponded to the predicted tsunami height for the southern part of the Sendai plain were extracted from 3,404 combinations of fault model parameters for both near-field tsunamis and far-field tsunamis. Tsunami inundation area was estimated by numerical simulations with the extracted fault models considering ground subsidence caused by the earthquakes. Area and depth of tsunami inundation can be estimated at the time of tsunami warnings by preparing a database system on the largest inundation areas of each tsunami height range based on our method.
著者
加藤 史訓 野口 賢二 諏訪 義雄 木村 晃 河合 雅史 高木 利光 小俣 雅志
出版者
公益社団法人 土木学会
雑誌
土木学会論文集B2(海岸工学) (ISSN:18842399)
巻号頁・発行日
vol.68, no.2, pp.I_1396-I_1400, 2012 (Released:2012-11-15)
参考文献数
4
被引用文献数
7 12

Field survey on coastal dike damage and scouring induced by the Great East Japan Earthquake Tsunami was conducted in the Southern Part of Sendai Plain. Erosion rate of dike cross section was estimated by using topographical data obtained by airborne laser scanner. The erosion rate tends to increase with relative height of coastal dike from the landside ground. Tsunami overtopping caused scouring at the landward toe of coastal dike, being a trigger of dike failure. Cross-sectional shape of the ground induced by scouring and thickness of tsunami deposit was estimated by portable dynamic cone penetration test and trench survey.