Results of the High-resolution seismic survey for the offshore extension of the Futagawa-Hinagu fault zone

Masatoshi YAGI; Izumi SAKAMOTO; Mikio FUJIMAKI; Kenji NEMOTO

Presentation information

Oral

Symbol S (Solid Earth Sciences) » S-SS Seismology

[S-SS28] Active faults and paleoseismology

Thu. May 28, 2015 11:00 AM - 12:45 PM A04 (APA HOTEL&RESORT TOKYO BAY MAKUHARI)

Convener:*Takashi AZUMA(National Institute of Advanced Industrial Science and Technology), Nobuhiko Sugito(Faculty of Humanity and Environment, Hosei University), Satoshi Tonai(Department of Applied Science, Faculty of Scienece, Kochi University), Toshikazu Yoshioka(Active Fault and Earthquake Research Center, National Institute of Advanced Industrial Science and Technology), Chair:Toshikazu Yoshioka(Institute of Earthquake and Volcano Geology, National Institute of Advanced Industrial Science and Technology)

12:30 PM - 12:45 PM

[SSS28-18] Results of the High-resolution seismic survey for the offshore extension of the Futagawa-Hinagu fault zone

*Masatoshi YAGI¹, Izumi SAKAMOTO¹, Mikio FUJIMAKI², Kenji NEMOTO¹ (1.Tokai University, 2.Coastal Ocean Research Co,LTD)

Keywords:Futagawa-Hinagu fault zone, right-lateral strike-slip fault, High-resolution seismic survey

Futagawa-Hinagu fault zone (mainly right -lateral strike-slip faults) extends from Aso volcano to the Yatsushiro-sea (The Headquarters for Earthquake Research Promotion, 2002). A number of faults exist in the Yatsushiro-sea bottom.
In acroteric part of strike-slip fault annihilation mechanism, develop complex structures (e.g. Kakimi and Kato, 1994). To comprehend these structures, it is necessary construct the research technique with three-dimensionally and high precision (Abe and Aoyanagi, 2004).
We have carried out the high-resolution seismic survey to comprehend the deformation structures of fault at Yatsushiro-sea. Furthermore, we plan to submarine topography survey and piston coring in the future