STUDY ON SUBMARINE TECTONIC GEOMORPHOLOGY AROUND JAPANESE ISLANDS BASED ON DETAILED DEM IMAGE

2014 Fiscal Year Final Research Report

• Project/Area Number: 23240121
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Geography
• Research Institution: Hiroshima University
• Principal Investigator: NAKATA Takashi 広島大学, 文学研究科, 名誉教授 (60089779)
• Co-Investigator(Kenkyū-buntansha): TOKUYAMA Hidekazu 高知大学, 海洋コア総合研究センター, 特任教授 (10107451) ; WATANABE Mitsuhisa 東洋大学, 社会学部, 教授 (30222409) ; GOTO Hideaki 広島大学, 大学院文学研究科, 准教授 (40323183) ; KUMAMOTO Takashi 岡山大学, 自然科学研究科, 准教授 (60285096) ; SUZUKI Yasuhiro 名古屋大学, 減災連携研究センター, 教授 (70222065)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: 海底活断層 / 変動地形 / プレート境界 / 日本海溝 / DEM画像

Outline of Final Research Achievements

Based on tectonic geomorphology method, we identified the submarine active fault and tectonic landform around Japanese Islands by interpretation of anaglyph images made by 90-150m-grid DEM processed from multi-narrow beam bathymetric surveys by Japan Coast Guard and JAMSTEC. We compiled detailed submarine active fault map along Japan trench, Izu-Ogasawara trench, Nankai trough and eastern margin of Japan Sea. This map provides more concrete idea and data for better assessment of location and size of future large earthquakes as well as gigantic tsunamis.

Free Research Field

地理学