[M-IS11] tsunami deposit

Tue. May 22, 2018 1:45 PM - 3:15 PM 102 (1F International Conference Hall, Makuhari Messe)

convener:Tetsuya Shinozaki(Center for Research in Isotopes and Environmental Dynamics (CRiED), University of Tsukuba), Takashi Chiba(Maritime Disaster Prevention Center), Daisuke Ishimura(首都大学東京大学院都市環境科学研究科地理学教室), Chairperson:Ishimura Daisuke(Department of Geography, Tokyo Metropolitan University)

The 2011 off the Pacific coast of Tohoku Earthquake and tsunami have an influence on the development of tsunami deposit research. After the tsunami, a lot of findings have been reported on various research fields. However, identification criteria of the tsunami deposit are not yet established. Moreover, it is still uncertain how to use the tsunami deposit in the risk assessment. In this session, we welcome researches from all aspect of sedimentary records of modern and paleo tsunamis both onshore and offshore, and numerical and experimental modeling studies for risk assessment. In addition, we also welcome other event deposits, such as flooding and storm surge, that they are considered to be important for discrimination of tsunami deposit.

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1:45 PM - 2:00 PM

[MIS11-11] Surveys of paleo tsunami deposits in Kunashir Island, the Northern Territories: Results obtained in the 2015-2017 projects and future issues

*Yuichi Nishimura¹, Yasuhiro Takashimizu², Daisuke Sugawara³, Takafumi Enya⁴, Takashi Chiba^5,1, Alexander Shishikin⁶, Alexsey Gorbunov⁷, Victor Kaistrenko⁷, Asuka Takahashi⁸, Hiroki Muramatsu⁸, Yasuyuki Kawazoe⁸ (1.Graduate School of Science, Hokkaido University, 2.Institute of Humanities, Social Sciences and Education, Niigata University, 3.Museum of Natural and Environmental History, Shizuoka, 4.Hokkaido Museum, 5.Maritime Disaster Prevention Center, 6.Shikotan Geophysical Observatory, 7.Institute of Marine Geology and Geophysics, Russian Academy of Sciences, 8.Ministry of Education, Culture, Sports, Science and Technology)

2:00 PM - 2:15 PM

[MIS11-12] Modeling of tsunamis along the Kuril Trench and sandy event deposits in the Pacific coast of Kunashir Island

*Daisuke Sugawara¹, Yuichi Nishimura², Yasuhiro Takashimizu³, Takafumi Enya⁴, Takashi Chiba^5,2 (1.Museum of Natural and Environmental History, Shizuoka, 2.Hokkaido University, 3.Niigata University, 4.Hokkaido Museum, 5.Maritime Disaster Prevention Center)

2:15 PM - 2:30 PM

[MIS11-13] Reconstruction of paleo-tsunami by organic geochemical analyses of peat sediments from the Akkeshi area, eastern Hokkaido, Japan

*Hiroyasu Asahi¹, Ken Sawada², Satoshi Furota³, Keiichi Hayashi⁴, Yoshihiro Kase⁴ (1.Graduate School of Science, Hokkaido University, 2.Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University, 3.Japan Agency for Marine-Earth Science and Technology, 4.Geological Survey of Hokkaido)

2:30 PM - 2:45 PM

[MIS11-14] Characteristics of tsunami deposits and crustal movements estimated from fossil diatom assemblages during the late Holocene, in the lower reaches of Toberi river area, Hokkaido, Japan

*Takashi Chiba^1,2, Yuichi Nishimura², Akira Sato³ (1.Maritime Disaster Prevention Center, 2.Institute of Seismology and Volcanology, Hokkaido University, 3.Department of Earth Science, Tohoku University)

2:45 PM - 3:00 PM

[MIS11-15] Prediction of earthquakes inferred fromGiant earthquake tsunami traces and related regional crustal movements by recognized regression around the Kuril subduction zone, eastern Hokkaido, northern Japan

*Kiyoyuki Shigeno¹, Futoshi Nanayama^2,3, Kazuaki Watanabe², Masayuki Ishii⁴, Kazuhito Ishiwata⁵, Shigeto Inokuma⁶ (1.Meiji consultant co.,Ltd., 2.Research Institute of Geology and Geoinformation, Geological Survey of Japan, 3.Center for water cycle, marine environment and disaster mitigation, Kumamoto University, 4.Ishii Professional Engineer Office, 5.Betsukai municipal museum, 6.Nemuro municipal museum)

Discussion (3:00 PM - 3:15 PM)

Session information