Tsunami prediction considering dynamic pressure fluctuation in near source area

2015 Fiscal Year Final Research Report

• Project/Area Number: 25350501
• 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
• Principal Investigator: MATSUMOTO Hiroyuki 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 (80360759)
• Co-Investigator(Kenkyū-buntansha): HAYASHI Yutaka 気象庁気象研究所, 地震津波研究部, 主任研究官 (40370332) ; HORI Takane 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, グループリーダー (00359176) ; ARIYOSHI Keisuke 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 (20436075) ; YAMAZAKI Akira 気象庁気象研究所, 地震火山研究部, 主任研究官 (70354529) ; KANEDA Yoshiyuki 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, 招聘上席技術研究員 (50359171)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 津波 / 水圧式津波計 / 2003年十勝沖地震 / 2011年東北地方太平洋沖地震

Outline of Final Research Achievements

This study aims to make use of real-time data being sent from the ocean-bottom pressure sensors for effective tsunami forecasting. For this purpose, two major scopes are conducted in this study; one is to design digital filter to be applied to the real-time data acquired near tsunami source area, and one is to interpret the in-situ pressure data to enhance tsunami detectability. Applying the designed filter to the pressure data at the 2003 Tokachi-oki earthquake, it is validated that the tsunami signals could be extracted within approximately 1 min. Also, processing and analysis of pressure data acquired by DONET during the 2011 Tohoku earthquake show that the pressure disturbances during the earthquake are involved by the seismic and acoustic waves.

Free Research Field

地震工学