Advancement of the Tsunami source presumption technique for the Historical tsunami using the Tsunami trace heights

2015 Fiscal Year Final Research Report

• Project/Area Number: 25350492
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Natural disaster / Disaster prevention science
• Research Institution: Japan Agency for Marine-Earth Science and Technology (2015); Tohoku University (2013-2014)
• Principal Investigator: IMAI Kentaro 国立研究開発法人海洋研究開発機構, 地震津波海域観測研究開発センター, 技術研究員 (20554497)
• Co-Investigator(Kenkyū-buntansha): TSUJI Yoshinobu 公益社団法人深田地質研究所, 研究部, 客員研究員 (30183479) ; NAMEGAYA Yuichi 国立研究開発法人産業技術総合研究所, 活断層火山研究部門, 主任研究員 (90466235)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 津波 / 歴史時代 / 津波痕跡高 / 波源推定

Outline of Final Research Achievements

To reduce the damage of the tsunami, it is important to examine the scale of a tsunami generated in the past in detail. The tsunami trace heights that is the information to presumption historical tsunami source is limited. But, in a source presumption only using the amount of tsunami trace, there is not the knowledge about the influence to give for the tsunami trace heights and the divided subfaults to have a big effect on the amount of tsunami in the presumed tsunami source. In wave source presumption only using the tsunami trace heights, I examined each appropriate analysis condition using combination optimization technique. As a result, clarify each appropriate analysis condition, which enable I could to suggest new wave source presumption technique for the historical tsunami.

Free Research Field

津波工学