TIARES Project—Tomographic investigation by seafloor array experiment for the Society hotspot

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• 作者：Daisuke Suetsugu ; Hajime Shiobara ; Hiroko Sugioka ; Aki Ito…
• 关键词：Hotspot ; mantle plume ; tsunami ; ocean ; bottom seismograph ; ocean ; bottom electro ; magnetometer
• 刊名：Earth, Planets and Space
• 出版年：2012
• 出版时间：April 2012
• 年：2012
• 卷：64
• 期：4
• 页码：i-iv
• 全文大小：1521KB
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• 作者单位：Daisuke Suetsugu (1)
  Hajime Shiobara (2)
  Hiroko Sugioka (1)
  Aki Ito (1)
  Takehi Isse (2)
  Takafumi Kasaya (1)
  Noriko Tada (1)
  Kiyoshi Baba (2)
  Natsue Abe (1)
  Yozo Hamano (1)
  Pascal Tarits (3)
  Jean-Pierre Barriot (4)
  Dominique Reymond (5)
  
  1. Japan Agency for Marine-Earth Science and Technology, Institute for Research on Earth Evolution, Yokosuka, Kanagawa, 237-0061, Japan
  2. The Earthquake Research Institute, the University of Tokyo, Tokyo, 113-0032, Japan
  3. UEB, IUEM, CNRS, France
  4. Laboratoire Geosciences du Pacifique Sud, Université de Polynésie Fran?aise, Tahiti, French Polynesia
  5. Laboratoire de Geophysique, CEA, Tahiti, French Polynesia
  
• 刊物类别：Earth Sciences, general; Geology; Geophysics/Geodesy;
• 刊物主题：Earth Sciences, general; Geology; Geophysics/Geodesy;
• 出版者：Springer Berlin Heidelberg
• ISSN：1880-5981

文摘

We conducted geophysical observations on the French Polynesian seafloor in the Pacific Ocean from 2009 to 2010 to determine the mantle structure beneath the Society hotspot, which is a region of underlying volcanic activity responsible for forming the Society Islands. The network for Tomographic Investigation by seafloor ARray Experiment for the Society hotspot (TIARES, named after the most common flower in Tahiti) is composed of multi-sensor stations that include broadband ocean-bottom seismometers, ocean-bottom electro-magnetometers, and differential pressure gauges. The network is designed to obtain seismic and electrical conductivity structures of the mantle beneath the Society hotspot. In addition to providing data to study the mantle structure, the TIARES network recorded unprecedented data of pressure and electromagnetic (EM) signals by tsunamis associated with large earthquakes in the Pacific Ocean, including the 2010 Chilean earthquake (M _w 8.8). Key words Hotspot mantle plume tsunami ocean-bottom seismograph ocean-bottom electro-magnetometer