12:09 PM - 12:12 PM
[MIS25-P06] Preliminary report on paleotsunami study in Nankoku City, Kochi Prefecture, western Japan
3-min talk in an oral session
Keywords:tsunami deposit, fossil diatom analysis, Nankai Trough, Nankoku City, Kochi Prefecture
We drilled in coastal lowlands of Toyo Town, Nankoku City, Shimanto Town and Kuroshio Town. We obtained cores and geoslices at 9 sites in a coastal lowland up to 3 m in elevation in Nankoku City. Deposits above the Kikai-Akahoya tephra (erupted ca. 7,200 cal BP) consist mainly of mud, peat and include event sand sheets. We present initial findings following the preliminary results of radiocarbon dating and fossil diatom analysis for some cores.