東日本大震災津波後の河口地形変化の特徴と問題点 [in Japanese] RIVER MOUTH MORPHOLOGY CHANGE AND ITS PROBLEMS AFTER THE GREAT EAST JAPAN EARTHQUAKE TSUNAMI [in Japanese]
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The Great East Japan Earthquake Tsunami occurred on March 11, 2011 induced big change in coastal and estuarine morphology. Tanaka et al. (2011) has already made a report on these morphology changes. In this paper, subsequent morphology recovery process after the tsunami is investigated for several rivers in Miyagi Prefecture. It is found that at the Naruse and Natori rivers, recovery of the river mouth morphology is extremely slow due to limited amount of sediment supply from the adjacent coastal area with coastal structures interrupting longshore sediment movement, whereas the Nanakita River mouth and the Akaiko Lagoon show relatively quicker recovery. This result shows importance of sediment budget analysis and management covering not only riverine area but also surrounding costal area.
- Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)
Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 68(4), I_1735-I_1740, 2012
Japan Society of Civil Engineers