Tsunami flows on the Sendai and Ishinomaki plains in relation to their geoenvironment

Masatomo UMITSU; Mamoru KOARAI; Kyohei KITAMURA; Masahiro Sugimoto; Kenya TAMURA

doi:10.14866/ajg.2011f.0.100024.0

Annual Meeting of the Association of Japanese Geographers, Autumn 2011

Session ID : 401

DOI https://doi.org/10.14866/ajg.2011f.0.100024.0

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Host: The Association of Japanese Geographers

Tsunami flows on the Sendai and Ishinomaki plains in relation to their geoenvironment

*Masatomo UMITSU, Mamoru KOARAI, Kyohei KITAMURA, Masahiro Sugimoto, Kenya TAMURA

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Keywords: 2011 Pacific Ocean Earthquake off Tohoku, Tsunami, Geoenvironment, Sendai Plain, Ishinomaki Plain

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Abstract

Tsunami flow on the Sendai and Ishinomaki plains are studied based on the mapping on aerial photos taken just after the tsunami disaster. Directions of the back wash flow in the central and northern part of the Sendai plain were various and are controlled by the regional topography of the region. In the Ishinomaki coastal plain, directions of the back wash flow were indicating mostly towards the southeast and east. This extraordinary direction of the back wash flow are considered to be related with the geo-environment and tsunami waves in the Ishinomaki Bay.

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