Quaternary subsurface cumulative lateral deformations detected by seismic reflection profiling and microgravity survey in the Tanna basin struck by the Mj=7.3 1930 Kita-Izu earthquake, central Japan

Haruo Kimura1, Yasuhira Aoyagi2, Tatsuya Sumita3, Akira Fujiwara4, Katsuya Noda4, Taro Koike4, Shiro Watanabe3, Shinsuke Okada5 and Naotsugu Higashimaru2, (1)Central Research Institute of Electric Power Industry, Geology and Geotechnical Engineering Division, Abiko, Japan, (2)Central Research Institute of Electric Power Industry, Abiko, Japan, (3)Geological Survey of Japan, Tsukuba Ibaraki, Japan, (4)Geosys, Inc., Tokyo, Japan, (5)Tohoku University, Sendai, Japan