International Workshop on the 2016 Kumamoto Earthquake

– Japan-US Joint Workshop –

March 6, 2017 Fukuoka, Japan

Organized by J-RAPID Project Team

Co-organized by Kyushu University

National Disaster Research Council, Japan

National Disaster Information Center of Western Japan

International Press-in Association (IPA)

Center for Reducing Disaster Risk, Kumamoto University

Supported by Japan Science and Technology Agency (JST)

Japan Foundation Engineering Co., Ltd.

Overview

Chain events of 6.5 magnitude foreshock and 7.0 Magnitude main shock that occurred on April 14 and April 16 respectively, called the 2016 Kumamoto Earthquakes, resulted in huge loss of lives and properties. The earthquake also resulted in heavy damage to infrastructures including landslides, slopes and embankment failures, road damage, earthquake and some limited liquefaction induced damage to buildings. Under the program called J-RAPID of JST (Japan Science and Technology Agency), a team of academia, researchers, engineers and consultants from Japan and the USA conducted joint investigation to carry out overall damage analysis and landslide hazard analysis of the Aso area through factual surveys. In order to disseminate the information gathered through those investigations and subsequent research in Japan, USA and other countries, an international workshop called “International Workshop on the 2016 Kumamoto Earthquake”, will be held.

Goal The workshop is a forum to discuss several aspects of the April 2016 event. The aim of this workshop is to conduct some brainstorming discussion amongst the researcher involved in the survey of the Kumamoto earthquake disaster and propose disaster mitigation measures in the vulnerable areas of the Kumamoto region.

Themes Earthquake mechanism and seismicity Field surveys, data collection and analysis Damage analysis based on field investigation Laboratory and model testing Numerical simulation Compound disaster Preparation of hazard map

Important deadlines: January 4, 2017: Abstract submission.

Please submit in A4 size within 1 page stating the name, affiliation and email address of the corresponding author by e-mail given below: e-mail: iwke2016.ja.us@gmail.com

February 4, 2017: Full paper submission.

Venue Inamori Hall, Kyushu University, Fukuoka, Japan.

Official Languages The official language of the workshop is English and Japanese.

Organizing committee Chairman: Prof. H. Hazarika (Kyushu University, Japan).

Advisory members: Prof. M. Hashimoto (Kyoto University, Japan). Prof. K. Ishihara (Chuo University, Japan). Prof. R. E. Kayen (University of California, Los Angeles, USA). Prof. Y. Kitazono (Prof. Emeritus, Kumamoto University, Japan). Prof. O. Kusakabe (IPA)

Prof. T. Mazda (Kumamoto University) Prof. A. Murakami (Kyoto University) Mr. I. Nakahara (Japan Foundation Engineering Co. Ltd.) Mr. A. Tamagami (Kyushu University, Japan). Dr. M. Terashi (IPA) Prof. K. Tsukahara (Kyushu University, Japan). Prof. K. Watanabe (Kyushu University, Japan). Ms. Y. Yamagata (Kyushu University, Japan). Prof. K. Yasuhara (Ibaraki University, Japan). Dr. T. Tsuji (Kyushu University, Japan)

Dr. Y. Tanoue (Kiso-Jiban Consultants Co., Ltd., Japan). Mr. S. Yamamoto (Chuo Kaihatsu Co. Ltd., Japan).

Workshop program

Time March 6, 2017

08:00-08:30 Registration

08:30-09:00 Opening Ceremony

09:00-10:00 Keynote Lectures I & II

10:00-10:20 Special Lecture

10:20-10:35 Coffee Break

10:35-12:00 Session I : Landslides and Debris Flows

12:00-13:00 Lunch

13:00-14:00 Keynote Lectures III & IV

14:00-15:45

Session II: Soil Liquefaction, Lateral Spreading and structural damage

15:45-16:00 Coffee Break

16:00-17:45 Session III: Engineering Seismology and Ground Motion

17:45-18:00 Closing Ceremony

19:00-21:00 Workshop Banquet

Keynote lectures

Keynote Lecture I: Analysis of a Fast-Moving Landslide during an Earthquake in Japan By Prof. K. Ishihara (Chuo University, Japan).

Keynote Lecture II: Geotechnical extreme event reconnaissance (GEER) mission to the 2016 Mw 6.0, Mw 6.2, and Mw 7.0 Kumamoto japan earthquakes By Prof. R. E. Kayen (University of California, Los Angeles, USA).

Members:

Dr. B. Chaudhary (Kyoto University, Japan) Prof. G. Chen (Kyushu University, Japan). Dr. S. Dashti (University of Colorado, Boulder, USA).

Dr. K. Franke (Brigham Young University, USA). Mr. T. Fujishiro (Fukuyama Consultant Co. Ltd., Kitakyushu, Japan). Dr. M. Fukuda (Taisei Geotech Co. Ltd., Kumamoto, Japan). Prof. H. Fukuoka (Niigata University, Japan). Mr. H. Furuichi (Giken Ltd., Japan). Mr. T. Hirose (Giken Ltd., Japan). Mr. S. Ishibashi (Nihon Chiken Co. Ltd., Japan). Dr. T. Ishizawa (National Research Institute for Earth Science and Disaster Resilience, Tsukuba, Japan).

Dr. N. Kachi (Kyushu University, Japan). Mr. Y. Katsuki (Nihon Chiken Co. Ltd., Japan). Mr. Y. Kitano (Giken Ltd., Japan). Dr. Y. Kochi (Ks Lab Co. Ltd., Japan). Mr. K. Kuribayashi (Eight-Japan Engineering Consultants Inc., Japan). Mr. S. Kuroda (Eight-Japan Engineering Consultants Inc., Japan). Mr. D. Matsumoto (Japan Foundation Engineering Co., Ltd., Japan). Dr. S. Nishie (Chuo Kaihatsu Co. Ltd., Japan). Dr. N. Oettle (AECOM, USA). Dr. T. Ohsumi (NIED, Tsukba, Japan).

Mr. K. Okamoto (Fukuyama Consultant Co. Ltd., Kitakyushu, Japan). Dr. O. Saitoh (Ibaraki University, Japan). Dr. N. Sakai (NIED, Tsukuba, Japan). Mr. M. Tajiri (Tajiri Engineering Office, Kumamoto, Japan). Mr. M. Tajiri (Tajiri Engineering Office, Kumamoto, Japan). Dr. M. Takada (Chuo Kaihatsu Co. Ltd., Japan). Dr. Y. Takeuchi (Kumamoto University, Japan). Dr. B. Wham (Cornell University, USA).

Special Lecture: Horizontal sliding of Uchinomaki hot spring area during the 2016 Kumamoto earthquake: Insight from satellite data, field observations and direct borehole measurements By Dr. T. Tsuji (Kyushu University, Japan)

Keynote Lecture III: Slope failures during recent earthquakes and their interpretations in terms of energy By Prof. T. Kokusho (Chuo University, Japan).

Keynote Lecture IV: Damaged situation of residential area of Mashiki-town By Mr. M. Tajiri (Tajiri Engineering Office, Kumamoto, Japan).

Publication The full paper (maximum 6 pages in A4 format) should be prepared and submitted by the provided deadline. The full paper volume will be distributed to the participants during the workshop.

Registration Fee Standard – 10,000 Japanese Yen Student – 4,000 Japanese Yen * Registration Fee includes lunch, coffee and proceedings of the workshop.

Important Notice Registration fee will be collected at the registration desk of the workshop (March 6, 2017). Please bring cash in Japanese Yen. No credit card or currency exchange facilities will be available.

Correspondence Prof. Hemanta Hazarika Department of Civil Engineering Kyushu University, Fukuoka, Japan E-mail: hazarika@civil.kyushu-u.ac.jp

International Workshop on the 2016 Kumamoto Earthquake (IWKE) Japan-US Joint Workshop Program

March 06, 2017 Inamori Center, Kyushu University

Fukuoka, Japan

08:00-08:30 Registration

08:30-09:00 Workshop Opening Ceremony Opening address: Prof. K. Watanabe, Vice President, Kyushu University Opening remarks: Prof. K. Ishihara, Chuo University, Japan Opening remarks: Prof. R. Kayen, University of California Los Angeles, USA Opening remarks: Prof. T. Kokusho, Prof. Emeritus, Chuo University, Japan Brief overview of J-RAPID Project: Chairman of IWKE Prof. H. Hazarika,

Kyushu University, Japan

09:00-10:20 Keynote Lectures Chairman: Prof. K. Yasuhara (Ibaraki University, Japan)

Keynote Lecture I: Analysis of a fast-moving landslide during an earthquake in Japan

Prof. K. Ishihara (Chuo University, Japan) Keynote Lecture II: Geotechnical extreme-event reconnaissance (GEER)

mission to the 2016 Mw 6.0, Mw 6.2, and Mw 7.0 Kumamoto Japan earthquakes

Prof. R. Kayen (University of California Los Angeles, USA) Special Lecture: Horizontal sliding of Uchinomaki hot spring area during

the 2016 Kumamoto earthquake: Insight from satellite data, field observations and direct borehole measurement

Dr. T. Tsuji (Kyushu University, Japan)

10:20-10:35 Coffee break

10:35-12:00 Session I: Landslides and Debris Flows: Monitoring, Observation and Numerical Modeling

Chairman: Dr. Y. Kochi (K’s lab Inc., Yamaguchi, Japan) Performance evaluation of UAV to use for disaster prevention Saitou, O., Ozaki, M. Slope disasters and their occurrence frequency after the 2016 Kumamoto

Earthquake Suzuki, M., Kagohara, K., Sakaguchi, K., Matsugi, H., Kataoka, S.

Investigation of slopes on the Takanoobane lava dome using the resistivity imaging method

Kochi, Y., Kariya, T., Kochi, Y., Matsumoto, D., Hirose, T.

Evaluation of seismically induced slope displacement by energy approach - Case study during 2016 Kumamoto Earthquake

Ishizawa, T., Kokusho, T. An early warning monitoring of earthquake-induced slope failures by

monitoring inclination changes in multi-point tilt sensors Wang, L., Nishie, S., Su, L., Yamaguchi, H., Yamamoto, S., Uchimura,

T., Sasahara, K. Rock slope failure of welded-tuff triggered by The 2016 Kumamoto

Earthquakes Yamamoto, S., Kudo, N., Fujita, K., Nishie, S., Takada, M., Yamaguchi,

H., Wang, L.

12:00-13:00 Lunch Break

13:00-14:00 Keynote Lectures Chairman: Prof. G. Chen (Kyushu University, Japan) Keynote Lecture III: Slope failures during recent earthquakes and their

interpretations in terms of energy Prof. T. Kokusho (Prof. Emeritus, Chuo University, Japan)

Keynote Lecture IV: Damaged situation of residential area of Mashiki-town Mr. M. Tajiri (Tajiri Engineering Office, Kumamoto, Japan)

14:00-15:45 Session II: Soil Liquefaction, Lateral Spreading and structural damages: Site Investigation, Field and Laboratory Testing, Evaluation

Chairman: Dr. B.P. Wham (Cornell University, Ithaca, USA) Liquefaction during the Kumamoto Earthquakes on April 14 and 16, 2016

Wakamatsu, K., Senne, S., Ozawa, K. Deformation and failure characteristics of volcanic soil at landslide sites due

to the Kumamoto Earthquake Sumartini, W.O., Hazarika, H., Kokusho, T., Ishibashi, S., Matsumoto

D., Chaudhary, B. Analysis of liquefaction occurred in 2016 Kumamoto earthquakes based on

boring data Ogo, K., Hazarika, H., Kokusho, T., Sumartini, O.W.

Instability of residences on volcanic ash cohesive soils during the 2016 Kumamoto Earthquake

Yasuhara, K., Kobayashi, K., Watanabe, M., Yoshimi, M., Hosoya, T., Arai, Y., Murakami, S.

Investigation for the damage Kumamoto Castle stone wall related to the 2016 Kumamoto earthquakes

Ohsumi, T. Restoration of damaged stone walls of Kumamoto castle due to 2016

Kumamoto earthquake Fukuda, M.

Water supply damage caused by the 2016 Kumamoto Earthquake Wham, B.P., Dashti, S., Franke, K., Kayen, R., Oettle, N.K.

15:45-16:00 Coffee Break

16:00-18:00 Session III: Engineering Seismology and Ground Motion: Site investigations, Seismic Response Analysis, Local site effect

Chairman: Dr. A. Nozu (Port and Airport Research Institute, Yokosuka, Japan)

Evaluation of local site effects with very high density in central Mashiki Town, Kumamoto Prefecture, Japan based on temporary earthquake observations and microtremor measurements, and its application

Hata, Y., Minato, F., Yamauchi, M., Okawa, Y., Ueda, Y., Atoji, S., Goto, H., Yoshimi, M., Furukawa, A., Morikawa, H., Ikeda, T., Kagawa, T.

Damage survey of bridges during the 2016 Kumamoto Earthquake and numerical analysis of plate girder bridge subjected to the Kumamoto Earthquake

Aye, M. N., Kasai, A. The feature of the surface fault ruptures in Kumamoto earthquake

Hosoya, T., Kaga, T. Investigation of tombstone condition at graveyard sites in Central Mashiki

Town, Kumamoto Prefecture, Japan, and Its application Hata, Y., Furukawa, A., Goto, H., Yoshimi, M., Morikawa, H., Ikeda,

T., Kagawa, T. Measured response of the Oh-Kirihata Dam to surface fault rupture

Oettle, N.K., Kayen, R., Franke, K., Dashti, S., Wham, B.P. Rupture process of the Kumamoto Earthquake and its impact on near-

source strong ground motions Nozu, A., Nagasaka, Y.

Post-earthquake geotechnical reconnaissance with an unmanned aerial vehicle following the 2016 Kumamoto Earthquakes

Franke, K.W., Blonquist, J., Barrett, B., Hedengren, J.D., Kayen, R., Briggs, D.

Mechanism clarification of earthquake induced extreme motions Chen, G., Cai, C., Kawakami, T.

18:00-18:15 Closing Ceremony Closing address by Prof. O. Kusakabe (International Press-in Association)

Vote of thanks by the chairman of IWKE Prof. H. Hazarika (Kyushu University, Japan)

19:00-21:00 Banquet

Venue: Itri Ito, Shiiki Hall 2F, Kyushu University, Ito Campus

Registration Form for Workshop

ワークショップの登録 International Workshop 2016 Kumamoto Earthquake

–Japan-US Joint Workshop – March 6, 2017

Fukuoka, Japan

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–Japan-US Joint Workshop – March 6, 2017

Fukuoka, Japan

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