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

Abstract : 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 (Mw 8.8).
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Daisuke Suetsugu, H. Shiobara, Iroko Sugioka, Aki Ito, Takei Isse, et al.. TIARES Project--Tomographic investigation by seafloor array experiment for the Society hotspot. Earth Planets and Space, Springer/Terra Scientific Publishing Company, 2012, 64 (4), pp.i-iv. ⟨10.5047/eps.2011.11.002⟩. ⟨insu-00710566⟩



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