[S-CG70] [EJ] Analysis and Prediction of Near-Source Strong Ground Motions: Present Status and Future Perspective

Wed. May 24, 2017 3:30 PM - 5:00 PM A07 (Tokyo Bay Makuhari Hall)

convener:Kimiyuki Asano(Disaster Prevention Research Institute, Kyoto University), Takao Kagawa(Tottori University Graduate School of Engineering), Hongjun Si(Seismological Research Institute Inc.), Haruo Horikawa(Institute of Earthquake and Volcano Geology, National Institute for Advanced Science and Technology), Chairperson:Takao Kagawa(Tottori University Graduate School of Engineering), Chairperson:Haruo Horikawa(Institute of Earthquake and Volcano Geology, National Institute for Advanced Science and Technology, Institute of Earthquake and Volcano Geology, National Institute for Advanced Science and Technology)

Damaging earthquakes such as the 1994 Northridge and the 1995 Kobe earthquakes drew attention to near-source strong ground motions in seismological and earthquake engineering communities. Many important strong motion records have been accumulated with the progress of strong motion observation, and such important strong motion data drove the studies on the generation mechanism of near-source strong ground motions. Accumulation of scientific knowledge on near-source ground motion generation has made substantial progress in development of strong motion prediction during the decades, and results of strong motion prediction have been widely applied to producing hazard maps and investigation of design basis ground motions for important facilities. The 2016 Kumamoto earthquake sequence generated severe strong ground motions in near-fault area with observation of JMA intensity of 7 for two times, and it raised new issues on strong motion prediction for active faults. Ocean-bottom strong motion observation networks such as S-net and DONET are also launching, and these new networks would be expected to provide near-source strong ground motion records even in ocean area. Thus, it is timely to review the progress of studies for near-source strong ground motions and discuss future perspectives for advancing strong motion prediction methods. We widely invite contributions from all aspects of this subject.

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3:30 PM - 3:45 PM

[SCG70-07] Ground Motion Simulation for Finite Faults using the Ambient Seismic Field

*Hiroe Miyake¹, Loic Viens², Marine A Denolle² (1.The University of Tokyo, 2.Department of Earth and Planetary Sciences, Harvard University)

3:45 PM - 4:00 PM

[SCG70-08] Dynamic Rupture Simulation of Near Fault Ground Motions for Surface and Buried Faults: Comparison of Dip Slip and Strike Slip Faults

*Kenichi Kato¹, Yasuhiro Ohtsuka¹, Monika Tadokoro¹, Tetsushi Watanabe¹, Tomiichi Uetake², Kazuhito Hikima² (1.Kobori Research Complex Inc., 2.Tokyo Electric Power Company Holdings, Inc,)

4:00 PM - 4:15 PM

[SCG70-09] Characteristics of Near-Fault Ground Motions during the 2016 Kumamoto, Japan, Mainshock

*Tomotaka Iwata¹, Kimiyuki Asano¹ (1.Disaster Prevention Research Institute, Kyoto University)

4:15 PM - 4:30 PM

[SCG70-10] A simplified source model to explain damaging near-source ground motions during the 2016 Kumamoto earthquake

*Atsushi Nozu¹, Yosuke Nagasaka¹ (1.Port and Airport Research Institute)

4:30 PM - 4:45 PM

[SCG70-11] Influence of Surface Rupturing and Shallow Subsurface Structure on Near-Fault Pulse-Type Motions during the 2016 Kumamoto Earthquake

*Masayuki Nagano¹, Kazuhito Hikima² (1.Tokyo University of Science, 2.Tokyo Electric Power Company)

4:45 PM - 5:00 PM

[SCG70-12] The ground motion characteristics along a north-south line in the Kumamoto Plain, using earthquake and array microtremor observation data

*Masahiro Korenaga¹, Seiji Tsuno¹, Kyosuke Okamoto¹, Kosuke Chimoto², Hiroaki Yamanaka², Nobuyuki Yamada³, Takeshi Matsushima⁴ (1.Railway Technical Research Institute, 2.Tokyo Institute of Technology, 3.Fukuoka University of Education, 4.Institute of Seismology and Volcanology, Faculty of Science, Kyushu University)