Precise Distributed Acoustic Sensing measurements by using the seafloor optical fiber cable system offshore Sanriku for earthquake monitoring

Masanao Shinohara1, Tomoaki Yamada1, Takeshi Akuhara2, Kimihiro Mochizuki3 and Shin'ichi Sakai4, (1)University of Tokyo, Bunkyo-ku, Japan, (2)Earthquake Research Institute, The University of Tokyo, Tokyo, Japan, (3)University of Tokyo, Earthquake Research Institute, Bunkyo-ku, Japan, (4)Univ Tokyo, Bunkyo-Ku Tokyo, Japan