IPM INTERNATIONAL WORKSHOPEARTHQUAKE HAZARDS AND TECTONICS IN
SOUTHWEST JAPAN
15–18 July 2017
Misasa, Tottori, Japan

Organized by Prof. Eizo Nakamura, Director, Institute for Planetary Materials (IPM), Okayama
University, Misasa
Workshop moderators:
Dr. Walter D. Mooney, USGS and Assist. Prof. Hiroshi Kitagawa, Misasa
The earthquake of 21/10/2016 caused considerable damage to the facilities at the Institute forPlanetary Materials in Misasa. The fault rupture was close by 4 km and the ground motions at theInstitute were very strong, causing delicate instruments to shift from their base positions. This
workshop will present a comprehensive overview of 21/10/2016 earthquake and the overall
earthquake hazards and tectonics in southwest Japan.

WORKSHOP AGENDA
July 15 (Sat)Pre-Workshop
13:00–14:30 Open lecture: The science of damaging earthquakes
14:40–15:30 Panel discussion: Earthquake preparedness and response
16:00–17:00 Registration
17:00–19:00 Icebreaker

July 16 (Sun)
Session 1: Earthquake hazards in southwest Japan
Chair: John E. Vidale
09:00–09:25 Opening remarks
09:25–10:10 Walter D. Mooney (USGS)
Neo-Tectonics and Active Faults in Japan10:10–10:40 Kazuki Koketsu (ERI, University of Tokyo), H. Kobayashi, K. Takano & H. Miyake
Rupture Process of the 2016 Tottori-Ken Chubu Earthquake and Its Effects onStrong Ground Motions
10:40–10:55 Coffee/Tea
10:55–11:25 Takuya Nishimura (DPRI, Kyoto University), Y. Takada & M. Hashimoto
San-In Shear Zone in Southwest Japan, Revealed by GNSS Observations
11:25–11:55 James J. Mori (DPRI, Kyoto University)
Spatial and Temporal Characteristics for Aftershocks of the 2000 and 2016Tottori Earthquakes
11:55–12:25 Hisayoshi Yokose (Kumamoto University)
A New Geological Approach to Predict A Disastrous Earthquake: A Clue From
the Time-Space Distribution of Hypocenters During the 2016 Kumamoto
Earthquakes (Foreshocks, Mainshock And Aftershocks)
12:25–13:30 Lunch, Poster session

Session2: Global seismology and hazard assessment
Chair: James J. Mori
13:30–14:15 Emile A. Okal (Northwest University)
Tsunamis from 2004 to 2016: What We Have Learned and Have We Become
Wiser?
14:15–14:45 Victor C. Tsai (Caltech), D.C. Bowden & H. Kanamori
Explaining Amplification of Surface Waves in Sedimentary Basins
14:45–15:15 E. A. Wirth, John E. Vidale (University of Washington) & N. Marafi
Anticipating the Shaking From an M9 Earthquake in Cascadia
15:15–15:30 Coffee/Tea
15:30–16:00 Kazushige Obara (University of Tokyo)
Progress in Science of Slow Earthquakes from Southwest Japan to the World
16:00–16:30 Martha K. Savage (Victoria University of Wellington) & Y. Aoki
Stress and Anisotropy in Kyushu, Southwest Japan
16:30–17:00 Heidi Houston (University of Washington)
Tidal Stress, Tremor, and Slow Slip Earthquakes: Implications for Deep Fault
Properties
17:00–17:30 John E. Ebel (Boston College) & D. W. Chambers
Estimating the Locations of Past and Future Large Earthquake Ruptures Using
Recent M4 and Greater Events
17:30–17:45 Question time and general discussion on day’s topic
18:00–20:00 Banquet

July 17 (Mon)
Session 3: Seismic and geochemical structure of the Earth’s interior
Chair: Ryoji Tanaka
09:00–09:45 Rainer Kind (GFZ) & X. Shen
The Fate of The Mantle Lithosphere During Continental Collision
09:45–10:15 Stewart Fishwick (University of Leicester)
Linking Lithospheric Structure and Seismicity
10:15–10:45 Iyasu G. Belay (PML, IPM), R. Tanaka, H. Kitagawa, K. Kobayashi & E. NakamuraOrigin of West African Passive-Margin Intraplate Basalt
10:45–11:00 Coffee/Tea
11:00–11:15 Dejene, H. Feyissa (PML, IPM), H. Kitagawa & E. Nakamura
Petrologic and Geochemical Constraints on the Evolution of the Ethiopian Rift
11:15–11:45 Tsutomu Ota (PML, IPM), L. V. Ranaweera, T. Moriguti, R. Tanaka & E. Nakamura.
Ancient Seawater-Mantle Interaction Detected in The Horoman Peridotites;
Implications for Mantle Evolution and Dynamics
11:45–13:30 Lunch, Poster session

Session 4: Geodynamics of active plate margins in East Asia
Chair: Walter D. Mooney13:30–14:15 Dapeng Zhao (Tohoku University)
Seismic Tomography and Seismotectonics of West Japan to East Asia
14:15–14:30 Yanqing Li (PML, IPM), C.Q. Ma & T. P. Robinson
Recycling of Oceanic Crust from a Stagnant Slab in the Mantle Transition Zone:
Evidence From Cenozoic Continental Basalts In Zhejiang Province, SE China
14:30–15:00 Hiroshi Kitagawa (PML, IPM), T. T. Nguyen, I. Pineda-Velasco & E. Nakamura
Slab morphology and Cenozoic volcanism in East Asia
15:00–15:15 Coffee/Tea
15:15–15:30 Tai Truong Nguyen (PML, IPM), H. Kitagawa, I. Pineda-Velasco & E. Nakamura.
Petrological Constraints on Thermochemical Interaction Between
Asthenospheric Mantle and Subducting Lithosphere
15:30–15:45 Ivan Pineda-Velasco (PML, IPM), H. Kitagawa, T. T. Nguyen, K. Kobayashi & E.
Nakamura
Geochemical Evidences for Melting of Subducting Oceanic Lithosphere At theSlab Tear Zones
15:45–16:00 Que Dinh Hoang (PML, IPM), Y. Yachi, C. Sakaguchi, H. Kitagawa, R. Tanaka & E.
Nakamura
Origin of Radon in Misasa Hot Springs, Tottori, SW Japan
16:00–16:15 Closing remarks (Walter D. Mooney)
16:30–18:00 Lab tour at IPM