Japan Geoscience Union Meeting 2014

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Oral

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

[M-IS23_2AM2] tsunami deposit

Fri. May 2, 2014 11:00 AM - 12:45 PM 415 (4F)

Convener:*Kazuhisa Goto(International Research Institute of Disaster Science (IRIDeS),Tohoku University), Masanobu Shishikura(Active Fault and Earthquake Research Center, GSJ/AIST), Yuichi Nishimura(Graduate School of Science, Hokkaido University), Chair:Yuichi Nishimura(Graduate School of Science, Hokkaido University)

11:00 AM - 11:15 AM

★ [MIS23-08] Paleo tsunami events determination using radiogenic nuclides

*Yusuke YOKOYAMA1 (1.Atmosphere and Ocean Research Institute, University of Tokyo)

Keywords:Radiocarbon, Accelerator Mass Spectrometry, Uranium series, Quaternary, Dating

Recent advancement of mass spectrometry enables us to determine timing of past events using trace amounts of geological samples. Accelerator Mass Spectrometry (AMS) and Inductively Coupled Plasma Mass Spectrometry (ICP-MS) are amongst them and long-lived nuclides can be measured precisely. We have been conducted paleo Tsunami studies applying 14C and U-series dating employing these techniques. Together with geophysical modeling as well as paleo climate proxy data, paleo Tsunami events are clearly reconstructed from these measurements. Also newly developed AMS, single stage AMS, that is dedicated for 14C measurements can produce large number of data to constrain the timing in different manner. In this presentation, several examples of these studies will be introduced along with perspectives of age determinations of paleo Tsunami events.