Detecting tsunami dynamo effect using vector geomagnetic data on land

2014 Fiscal Year Final Research Report

• Project/Area Number: 25610134
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Solid earth and planetary physics
• Research Institution: Kyoto University
• Principal Investigator: TOH Hiroaki 京都大学, 理学(系)研究科(研究院), 准教授 (40207519)
• Research Collaborator: KAWASHIMA Issei ; MINAMI Takuto ; YOSHIMURA Ryokei ; FUJII Ikuko ; OOGI Junpei ; YAMAZAKI Akira ; ABE Satoshi
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 地震災害・火山災害 / 地磁気 / 津波 / ダイナモ作用 / ベクトル観測

Outline of Final Research Achievements

In order to improve the detection capability of the existing tsunami early warning system, a basic research on detection of the tsunami-generated magnetic field on land using vector geomagnetic difference between a coastal station and an inland reference site was conducted.
As a result, an observation system that monitors real-time vector geomagnetic difference between Muroto and Umaji in Kochi Prefecture has been constructed. It is now possible to provide new data for tsunami early warning at the time of he Nankai/East Nankai megatquakes.

Free Research Field

Geomagnetism