[S-CG40] Active Tectonics and Seismic Hazards in the Himalayan Region

Sun. Jun 6, 2021 1:45 PM - 3:15 PM Ch.24 (Zoom Room 24)

convener:Kazuki Koketsu(Earthquake Research Institute, University of Tokyo), Nath Soma Sapkota(Nepal Geological Society), Srinagesh Davuluri(CSIR-National Geophysical Research Institute), Chairperson:Kazuki Koketsu(Earthquake Research Institute, University of Tokyo), Hiroe Miyake(Earthquake Research Institute, University of Tokyo)

In the Himalayan region, the Indian and Eurasian plates collide, and the Indian lithosphere underthrusts beneath the Eurasian plate from the Main Frontal Thrust with a convergence rate of approximately 18 mm/year. This has historically caused large earthquakes such as the 1934 Bihar-Nepal earthquake, and seismic hazards in the region remain high. On April 25, 2015 (UTC), the Mw 7.8 Gorkha earthquake occurred along the plate boundary, and this affected the Main Frontal Thrust increasing the stress in possible source areas of future large earthquakes. Therefore, even after the Gorkha earthquake, studies on active tectonics and seismic hazards are still necessary in the Himalayan region. All kinds of studies on them are welcome for this session.

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1:45 PM - 2:00 PM

[SCG40-01] Seismic Hazard Assessment Studies in Uttarakhand Himalaya

*Srinagesh Davuluri¹, Suresh Gudapati¹, Srinivas Dakuri¹ (1.CSIR-National Geophysical Research Institute)

2:00 PM - 2:15 PM

[SCG40-02] Active Tectonics & Seismological Research in Nepal Himalaya: Preliminary results from SATREPS project

*Soma Nath Sapkota¹, Kazuki Koketsu², Hiroe Miyake³, Koji Okumura⁴, Prakash Pokhrel⁵ (1.Retired Director General, Department of Mines and Geology, Kathmandu Nepal, 2.Professor, Earthquake Research Institute, University of Tokyo, Tokyo Japan, 3.Associate Professor, Earthquake Research Institute, University of Tokyo, Tokyo Japan, 4.Professor, Graduate School of Humanities and Social Sciences, Hiroshima University, Japan, 5.Geologist, Department of Mines and Geology, Kathmandu Nepal)

2:15 PM - 2:30 PM

[SCG40-03] Interseismic coupling on the Main Himalayan Thrust in Nepal derived from GNSS displacement rate field

*Takao Tabei¹, Mako Ohzono², Bishow Raj Silwal³, Rajendra Bhandari³, Janak B. Cahnd³, Soma Nath Sapkota⁴, Hiroe Miyake², Kazuki Koketsu² (1.Faculty of Science and Technology, Kochi University, 2.Earthquake Research Institute, University of Tokyo, 3.Department Mines and Geology, Nepal, 4.Nepal Geological Society)

2:30 PM - 2:45 PM

[SCG40-04] Geodetic Observation for Evaluation of Earthquake Generation Potential in Nepal after the 2015 Gorkha Earthquake

*Bishow Raj Silwal¹, Rajendra Prasad Bhandari¹, Janak Bahadur Chand¹, Mako Ohzono², Takao Tabei³ (1.Department of Mines and Geology, Nepal, 2.Earthquake Research Institute, University of Tokyo, Japan, 3.Kochi University, Kochi, Japan)

2:45 PM - 3:00 PM

[SCG40-05] Rupture History of the Himalayan Frontal Thrust near Bagmati River crossing in Central Nepal

*Koji Okumura¹, Prakash Pokhrel³, Hisao Kondo², Tomoru Yamanaka¹, Soma Nath Sapkota³ (1.Graduate School of Letters, Hiroshima University, 2.Research Institute of Earthquake and Volcano Geology, GSJ, AIST, 3.Department of Mines and Geology, Nepal)

3:00 PM - 3:15 PM

[SCG40-06] Strong Motion Observation Network for Earthquake Disaster Mitigation in the Kathmandu Valley, Nepal

*Nobuo Takai¹, Michiko Shigefuji², Hiroe Miyake³, Kazuki Koketsu³, Mukunda Bhattarai⁴, Chintan Timsina⁴, Shova Singh⁴, Subeg Bijukchhen⁵ (1.Hokkaido University, 2.Kyushu University, 3.University of Tokyo, 4.Department of Mines and Geology, Nepal, 5.Khwopa Engineering College, Nepal)

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