[M-IS25] tsunami deposit

Sun. May 24, 2015 9:00 AM - 10:45 AM 201B (2F)

Convener:*Kazuhisa Goto(International Research Institute of Disaster Science (IRIDeS),Tohoku University), Masanobu Shishikura(Institute of Earthquake and Volcano Geology, National Institute of Advanced Industrial Science and Technology), Yuichi Nishimura(Graduate School of Science, Hokkaido University), Chair:Kazuhisa Goto(International Research Institute of Disaster Science (IRIDeS),Tohoku University), Yasuhiro Takashimizu(Mathematical and Natural Sciences, Institute of Humanities, Social Sciences and Education, Niigata University)

After the 2011 off the Pacific coast of Tohoku Earthquake and tsunami, the tsunami deposit is reconsidered as very important and useful tool for future tsunami risk assessment. 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 discuss the deposits that were formed by the tsunamis generated by earthquake and other mechanisms. The talks on the risk assessment using the tsunami deposits are also welcome.

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9:00 AM - 9:15 AM

[MIS25-01] The foraminifera assemblages in tsunami sediments on Ishigaki Island, southwestern Japan

*Yoko Tu¹, Chih-wei Chien², Masataka ANDO³, Akihisa KITAMURA⁴, Masanobu SHISHIKURA⁵, Mamoru NAKAMURA⁶ (1.Department of Natural History Sciences, Hokkaido University, Japan, 2.Department of Earth Sciences, National Central University, Taiwan, 3.Center of Integrated Research and Education of Natural Hazards, Shizuoka University, 4.Institute of Geosciences, Faculty of Science, Shizuoka University, 5.Institute of Earthquake and Volcano Geology, National Institute of Advanced Industrial Science and T, 6.Faculty of Science, University of the Ryukyus)

9:15 AM - 9:30 AM

[MIS25-02] Evaluating the magnitude of late Holocene mega-tsunamis on Ishigaki Island based on an analysis of molluscan assemblages

*Akihisa KITAMURA¹, Mami ITO², Masataka ANDO³, Ryoya IKUTA¹, Masayuki IKEDA¹, Takafumi IMAI² (1.Faculty of Science, Shizuoka University, 2.Graduate School of Science, Shizuoka University, 3.Center for Integrated Research and Education of Natural hazards, Shizuoka University)

9:30 AM - 9:45 AM

[MIS25-03] Paleo environment changes and tsunami deposits in Susami city, Wakayama prefecture during the Holocene

*Takashi CHIBA¹, Kazuhisa GOTO², Shigehiro FUJINO¹, Yusuke YOKOYAMA³, Yosuke MIYAIRI⁴, Chikako SAWADA⁴, Takashi ISHIZAWA⁵, Yuichi NISHIMURA⁶, Daisuke SUGAWARA², James Goff⁷ (1.Faculty of Life and Environmental Sciences, Univ. of Tsukuba, 2.IRIDeS Tohoku Univ., 3.ACES Univ. of Tokyo, 4.AORI, Univ. of Tokyo, 5.Department of Earth Science, Graduate School of Science, Tohoku Univ., 6.Graduate School of Science, Hokkaido Univ., 7.School of Biological, Earth and Environmental Sciences, Univ. of New South Wales)

9:45 AM - 10:00 AM

[MIS25-04] Trench and coring survey of the tsunami deposits in the coastal area along the Wakasa Bay, Takahama, Fukui Prefecture.

*Hirofumi YAMAMOTO¹, Atsushi URABE², Naohiro SASAKI¹, Yasuhiro TAKASHIMIZU², Kyoko S. KATAOKA² (1.University of Fukui, 2.Niigata University)

10:00 AM - 10:15 AM

[MIS25-05] Event deposits discovered on the mouth area of Arakawa River, Niigata, Japan

*Yasuhiro TAKASHIMIZU¹, Katsunori ONO¹, Atsushi URABE¹, Shunsuke TSURUMAKI¹ (1.Niigata University)

10:15 AM - 10:30 AM

[MIS25-06] Geologic evidence of tsunamis in Kujukuri

*Jessica Pilarczyk¹, Yuki SAWAI², Benjamin Horton¹, Yuichi NAMEGAYA², Tetsuya SHINOZAKI², Koichiro TANIGAWA², Osamu FUJIWARA², Masanobu SHISHIKURA², Dan MATSUMOTO², Tina Dura¹ (1.Rutgers University, 2.National Institute of Advanced Industrial Science and Technology (AIST))

10:30 AM - 10:45 AM

★ [MIS25-07] Was the 2011 Tohoku tsunami once-a-millennium disaster in the Sendai Plain?

*Yuki SAWAI¹, Yuichi NAMEGAYA¹, Toru TAMURA¹, Rei NAKASHIMA¹, Koichiro TANIGAWA¹ (1.National Institute of Advanced Industrial Science and Technology (AIST))