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<datestamp>2018-01-11</datestamp>
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<publisher>HAL CCSD</publisher>
<title lang=en>Segmentation of the Himalayas as revealed by arc-parallel gravity anomalies</title>
<creator>Hetenyi, G.</creator>
<creator>CATTIN, Rodolphe</creator>
<creator>Berthet, Theo</creator>
<creator>LE MOIGNE, Nicolas</creator>
<creator>Chophel, Jamyang</creator>
<creator>Lechmann, Sarah</creator>
<creator>Hammer, Paul</creator>
<creator>Drukpa, Dowchu</creator>
<creator>Sapkota, Soma Nath</creator>
<creator>GAUTIER, Stephanie</creator>
<creator>Thinley, Kinzang</creator>
<contributor>Laboratoire de géologie de l'ENS (LGE) ; École normale supérieure - Paris (ENS Paris) - Institut national des sciences de l'Univers (INSU - CNRS) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<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>Risques ; 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>Department of Earth Sciences, Uppsala University</contributor>
<contributor>Department of Geology and Mines, Ministry of Economic Affairs</contributor>
<contributor>Science & Technology, Federal Department of Defence, Civil Protection and Sport</contributor>
<contributor>Department of Geology and Mines,Ministry of Economic Affairs</contributor>
<contributor>Department of Mines and Geology, Lainchaur, Kathmandu</contributor>
<contributor>National Land Commission, Kawang Jagsa</contributor>
<description>International audience</description>
<source>ISSN: 2045-2322</source>
<source>EISSN: 2045-2322</source>
<source>Scientific Reports</source>
<publisher>Nature Publishing Group</publisher>
<identifier>hal-01420404</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01420404</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01420404/document</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01420404/file/hetenyi2016.pdf</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01420404</source>
<source>Scientific Reports, Nature Publishing Group, 2016, 6, pp.33866. 〈10.1038/srep33866〉</source>
<identifier>DOI : 10.1038/srep33866</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1038/srep33866</relation>
<language>en</language>
<subject>[SDU.STU.TE] Sciences of the Universe [physics]/Earth Sciences/Tectonics</subject>
<subject>[SDE.MCG] Environmental Sciences/Global Changes</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Lateral variations along the Himalayan arc are suggested by an increasing number of studies and carry important information about the orogen’s segmentation. Here we compile the hitherto most complete land gravity dataset in the region which enables the currently highest resolution plausible analysis. To study lateral variations in collisional structure we compute arc-parallel gravity anomalies (APaGA) by subtracting the average arc-perpendicular profile from our dataset; we compute likewise for topography (APaTA). We find no direct correlation between APaGA, APaTA and background seismicity, as suggested in oceanic subduction context. In the Himalayas APaTA mainly reflect relief and erosional effects, whereas APaGA reflect the deep structure of the orogen with clear lateral boundaries. Four segments are outlined and have disparate flexural geometry: NE India, Bhutan, Nepal & India until Dehradun, and NW India. The segment boundaries in the India plate are related to inherited structures, and the boundaries of the Shillong block are highlighted by seismic activity. We find that large earthquakes of the past millennium do not propagate across the segment boundaries defined by APaGA, therefore these seem to set limits for potential rupture of megathrust earthquakes.</description>
<date>2016-09-21</date>
</dc>
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