Investigation of seafloor displacement, submarine landslide and sediment dynamics related to the 2011 Magnitude 9.0 Tohoku-Oki Earthquake along the Japan Trench, and ROV operations to ocean bottom instruments and observatories

调查与 2011 年日本海沟 9.0 级东北冲地震有关的海底位移、海底滑坡和沉积物动力学，以及 ROV 对海底仪器和观测站的操作

• 批准号: 220117657
• 负责人: Professor Dr. Gerold Wefer
• 金额: --
• 依托单位: Institut für Geologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/220117657?language=en
• 关键词: Investigation; seafloor; displacement; submarine; landslide

On March 11, 2011, Japan's largest island, Honshu, was struck by a magnitude 9 earthquake. It was triggered by a convulsive release of tension that had built up through the collision of the Pacific Plate with a spur of the North American Plate. The epicenter was located 70 km off the coast, and parts of the island, the shelf, and the continental slope were shifted up to 50 m toward the east, and the sea floor was lifted by up to 5 m. As a result of these movements, including possibly large submarine slumps, a tsunami up to 40 m high was created that devastated broad segments of the coast and claimed around 20,000 human lives. The earthquake region shall be investigated by a joint German-Japanese expedition, using a ROV, AUV, multibeam, parasound, gravity corer and multicorer in order to determine the changes caused by the earthquake, recover buried instruments, and retrieve sediment cores. The results will contribute to a better understanding of the course of events and the mechanisms of the earthquake and tsunami.

2011年3月11日，日本最大的岛屿亨苏（Honshu）被9级地震袭击。它是由张力通过太平洋板块的碰撞与北美板块的碰撞所建立的。震中位于距离海岸70公里，岛上的部分地区，架子和大陆坡度向东移动50 m，海底提起高达5 m。由于这些运动，包括可能大的潜艇蓬勃发展，高达40 m高的海啸被摧毁了沿海地区，并夺走了约20,000人的人类生命。地震区域应通过ROV，AUV，Multibeam，Parasound，Gravity Corer和Multicorer进行研究，以确定地震，恢复埋入的仪器和检索沉积物核心所引起的变化。结果将有助于更好地理解事件的过程以及地震和海啸的机制。

项目成果

Evidence for Mass Transport Deposits at the IODP JFAST-Site in the Japan Trench

日本海沟 IODP JFAST 站点的大众运输沉积物的证据

• DOI: 10.1007/978-3-319-00972-8_4
• 发表时间: 2014
• 作者: Strasser;Römer;Kölling;Ikehara;Kanamatsu;Dinten;Fujiwara;Kawamura;Kodaira;V Sonne Cruise SO219A Cruise Participants
• 通讯作者: V Sonne Cruise SO219A Cruise Participants

A slump in the trench: Tracking the impact of the 2011 Tohoku-Oki earthquake

• DOI: 10.1130/g34477.1
• 发表时间: 2013-04
• 期刊: Geology
• 影响因子: 5.8
• 作者: M. Strasser;M. Kölling;C. S. Ferreira;H. Fink;T. Fujiwara;S. Henkel;K. Ikehara;T. Kanamatsu;K. Kawamura;S. Kodaira;M. Römer;G. Wefer;Jamstec Cruise Mr E scientists