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<publisher>HAL CCSD</publisher>
<title lang=en>Joint inversion of teleseismic and GOCE gravity data: application to the Himalayas</title>
<creator>Basuyau, Clemence</creator>
<creator>Diament, M.</creator>
<creator>Tiberi, Christel</creator>
<creator>Hetenyi, G.</creator>
<creator>Vergne, J.</creator>
<creator>Peyrefitte, A.</creator>
<contributor>Institut de Physique du Globe de Paris (IPGP) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - Institut national des sciences de l'Univers (INSU - CNRS) - IPG PARIS - Université Paris Diderot - Paris 7 (UPD7) - Université de la Réunion (UR) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Manteau et Interfaces ; 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) - 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>Eidgenössische Technische Hochschule [Zürich] (ETH Zürich)</contributor>
<contributor>Sismologie ; Ecole et Observatoire des sciences de la terre de Strasbourg (EOSTS) ; Institut national des sciences de l'Univers (INSU - CNRS) - Université Louis Pasteur - Strasbourg I - Centre National de la Recherche Scientifique (CNRS) - Institut national des sciences de l'Univers (INSU - CNRS) - Université Louis Pasteur - Strasbourg I - Centre National de la Recherche Scientifique (CNRS) - Institut de physique du globe de Strasbourg (IPGS) ; Centre National de la Recherche Scientifique (CNRS) - Institut national des sciences de l'Univers (INSU - CNRS) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Bureau de Recherches Géologiques et Minières (BRGM) (BRGM)</contributor>
<description>International audience</description>
<source>ISSN: 0956-540X</source>
<source>EISSN: 1365-246X</source>
<source>Geophysical Journal International</source>
<publisher>Oxford University Press (OUP)</publisher>
<identifier>hal-00858024</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00858024</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00858024</source>
<source>Geophysical Journal International, Oxford University Press (OUP), 2013, 193 (1), pp.149-160. 〈10.1093/gji/ggs110〉</source>
<identifier>DOI : 10.1093/gji/ggs110</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1093/gji/ggs110</relation>
<language>en</language>
<subject lang=en>Gravity anomalies and Earth structure</subject>
<subject lang=en>Seismic tomography</subject>
<subject lang=en>Continental tectonics: compressional</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>
<subject>[SDE.MCG] Environmental Sciences/Global Changes</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Our knowledge and understanding of the 3-D lithospheric structure of the Himalayas and the Tibetan Plateau is still challenging although numerous geophysical studies have been performed in the region. The GOCE satellite mission has the ambitious goal of mapping Earth's gravity field with unprecedented precision (i.e. an accuracy of 1-2 mGal for a spatial resolution of 100 km) to observe the lithosphere and upper-mantle structure. Consequently, it gives new insights in the lithospheric structure beneath the Himalayas and the Tibetan Plateau. Indeed, the GOCE gravity data now allow us to develop a new strategy for joint gravimetry-seismology inversion. Combined with teleseismic data over a large region in a joint inversion scheme, they will lead to lithospheric velocity-density models constrained in two complementary ways. We apply this joint inversion scheme to the Hi-CLIMB (Himalayan-Tibetan Continental Lithosphere during Mountain Building) seismological network which was deployed in South Tibet and the Himalayas for a 3-yr period. The large size of the network, the high quality of the seismological data and the new GOCE gravity data set allow us to image the entire lithosphere of this active area in an innovative way. We image 3-D low velocity and density structures in the middle crust that fit the location of discontinuous low S-velocity zones revealed by receiver functions in previous geophysical studies. In the deeper parts of our velocity model we image a positive anomaly interpreted to be the heterogenous Indian lithosphere vertically descending beneath the centre of the Tibetan Plateau.</description>
<date>2013-04</date>
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