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，日本最大的岛屿本州岛发生9级地震。它是由太平洋板块与北美板块的一个突出部分碰撞所产生的紧张局势的痉挛性释放引发的。震中位于离海岸70公里处，岛屿、大陆架和大陆坡的部分地区向东移动了50米，海底上升了5米。由于这些运动，包括可能的大型海底塌陷，造成了高达40米的海啸，摧毁了大片海岸，夺走了大约20 000人的生命。德国和日本的联合考察队将对地震区进行调查，使用水下机器人、多波束、超声波、重力取样器和多取样器，以确定地震造成的变化，收回被掩埋的仪器，并收回沉积物岩心。其结果将有助于更好地了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