Japan Geoscience Union Meeting 2016

Presentation information


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

[M-IS11] tsunami deposit

Thu. May 26, 2016 9:00 AM - 10:30 AM IC (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)

10:15 AM - 10:30 AM

[MIS11-06] Event deposits recorded in the coastal plain in Toyama and Ishikawa area

*Atsushi Urabe1, Yasuhiro Takashimizu2, Kyoko Kataoka1, Kenji Nishina3, Gentaro Kawakami3, Kazuomi Hirakawa, Hideo Sakai4 (1.Research Institute for Natural Hazards and Disaster Recovery, Niigata University, 2.Mathematical and Natural Sciences, Institute of Humanities, Social Sciences and Education, Niigata University, 3.Geological Survey of Hokkaido, 4.Department of Earth Sciences, Faculty of Science, Unversity of Toyama)

Keywords:toyama and ishikawa area, Tsunami sediment

Tsunami deposit was investigated in Noto Peninsula and coastal area of Toyama Bay. The coarse sand layers which includes rounded gravel were admitted from the coastal terrace sediment. The age of these events indicates 19th century, 9-11th century and 1800-2000 calBP.Boring exploration was performed at Suzu, Himi, Imizu, Uozu and Kurobe city. An event sediment was authorized from a core sample in each spot and age was presumed. As a result event sediments common to each spot on Toyama-wan coast were 4 horizons of about 7900-7800 calBP, about 5000- 4800 calBP, about 2500-2000 calBP and about 800-700 calBP. Judged from an altitude of beach ridge and the distance from the coast, these event sediments have a high possibility by the tsunami wave.