Japan Geoscience Union Meeting 2015

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Oral

Symbol M (Multidisciplinary and Interdisciplinary) » M-IS Intersection

[M-IS25] tsunami deposit

Sun. May 24, 2015 11:00 AM - 12:45 PM 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:Yuichi Nishimura(Graduate School of Science, Hokkaido University), Masanobu Shishikura(Institute of Earthquake and Volcano Geology, National Institute of Advanced Industrial Science and Technology)

11:15 AM - 11:30 AM

[MIS25-09] Highly precise radiocarbon dating of tsunami deposits

*Yosuke MIYAIRI1, Yusuke YOKOYAMA1, Chikako SAWADA1, Takashi ISHIZAWA2, Yuichi NISHIMURA3, Daisuke SUGAWARA4, Takahisa KAWAMATA5, Kazuhisa GOTO4 (1.Atmosphere and Ocean Research Institute,The University of Tokyo, 2.Department of EARTH SCIENCE, Graduate School of Science, Tohoku University, 3.Graduate School of Science, Hokkaido University, 4.International Research Institute of Disaster Science, Tohoku University, 5.Board of Education, Iwanuma City)

Keywords:radiocarbon dating, tsunami deposit, peat, wiggle matching, 14C, AMS

Highly precise dating of tsunami deposit will be a useful tool for elucidation the frequencies of occurrence of the paleotsunami. Radiocarbon dating is used as dating tool of tsunami deposit. However, conventional radiocarbon dating does not have the enough precision to distinguish historical tsunami deposits.We have developed a highly precise radiocarbon dating method using a high-density sampling method.We will present about a high precision radiocarbon dating method of tsunami deposit using data from Iwanuma investigation site.