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<identifier>oai:HAL:hal-00420907v1</identifier>
<datestamp>2018-01-11</datestamp>
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<publisher>HAL CCSD</publisher>
<title lang=en>Mapping upper mantle flow beneath French Polynesia from broadband ocean bottom seismic observations</title>
<creator>Barruol, Guilhem</creator>
<creator>Suetsugu, D.</creator>
<creator>Shiobara, H.</creator>
<creator>Sugioka, H.</creator>
<creator>Tanaka, S.</creator>
<creator>Bokelmann, Goetz</creator>
<creator>Fontaine, Fabrice R., </creator>
<creator>Reymond, D.</creator>
<contributor>Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Institute for Research on Earth Evolution ; Japan Agency for Marine-Earth Science and Technology (JAMSTEC)</contributor>
<contributor>Earthquake Research Institute ; The University of Tokyo</contributor>
<contributor>Laboratoire de Détection et de Géophysique (CEA) (LDG) ; Commissariat à l'énergie atomique et aux énergies alternatives (CEA)</contributor>
<description>International audience</description>
<source>ISSN: 0094-8276</source>
<source>EISSN: 1944-8007</source>
<source>Geophysical Research Letters</source>
<publisher>American Geophysical Union</publisher>
<identifier>hal-00420907</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00420907</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00420907/document</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00420907/file/Barruol_SKS_PLUME_BBOBS_GRL2009.pdf</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00420907</source>
<source>Geophysical Research Letters, American Geophysical Union, 2009, 36 (14), pp.L14301. 〈10.1029/2009GL038139〉</source>
<identifier>DOI : 10.1029/2009GL038139</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1029/2009GL038139</relation>
<language>en</language>
<subject lang=en>SKS splitting</subject>
<subject lang=en>seismic anistropy</subject>
<subject lang=en>french Polynesia</subject>
<subject>[SDU.STU.GP] Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph]</subject>
<subject>[PHYS.PHYS.PHYS-GEO-PH] Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph]</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Upper mantle structures and flow related to the South Pacific Superswell and to the associated short-lived hotspots are investigated using seismic stations deployed in French Polynesia. Beside island stations, broadband ocean bottom seismometers ( BBOBS) have been deployed between the various Polynesian archipelagos to investigate the oceanic upper mantle "unperturbed'' by thickened crust or hotspot activity. We investigate seismic anisotropy measured at BBOBS stations and found it rather similar to that from island stations. This confirms the ability of OBS to be used for anisotropy purposes and suggests some homogeneity in the upper mantle pervasive deformation. The two OBS installed on the head of the Society hotspot provide different anisotropy signatures than most of the other French Polynesian stations: one is "isotropic'' to SKS waves and the other provides a fast split direction normal to the average value observed in this area, suggesting a more complex mantle flow induced by the plume upwelling.</description>
<date>2009</date>
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