Seafloor sediment thickness below S-net observatories offshore of the east Japan revealed from PS conversion wave at the sedimentary basement

Ryosuke Azuma1, Ryota Takagi2, Genti Toyokuni2, Takashi Nakayama3, Syuichi Suzuki2, Makiko Sato3, Naoki Uchida3 and Ryota Hino3, (1)Tohoku University, Research Center for Prediction of Earthquake and Volcanic Eruption, Sendai, Japan, (2)Tohoku University, Sendai, Japan, (3)Tohoku University, Graduate School of Science, Sendai, Japan