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<datestamp>2018-01-11</datestamp>
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<title lang=en>Ice cap melting and low-viscosity crustal root explain the narrow geodetic uplift of the Western Alps</title>
<creator>CHERY, Jean</creator>
<creator>GENTI, Manon</creator>
<creator>VERNANT, Philippe</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>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>
<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-01332757</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01332757</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01332757</source>
<source>Geophysical Research Letters, American Geophysical Union, 2016, 43 (7), pp.3193-3200. 〈10.1002/2016GL067821〉</source>
<identifier>DOI : 10.1002/2016GL067821</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1002/2016GL067821</relation>
<language>en</language>
<subject lang=en>western Alps</subject>
<subject>[SDU.STU.GP] Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph]</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>More than 10 years of geodetic measurements demonstrate an uplift rate of 1–3 mm/yr of the high topography region of the Western Alps. By contrast, no significant horizontal motion has been detected. Two uplift mechanisms have been proposed: (1) the isostatic response to denudation responsible for only a fraction of the observed uplift and (2) the rebound induced by the Wurmian ice cap melting which predicts a broader uplifting region than the one evidenced by geodetic observations. Using a numerical model to fit the geodetic data, we show that a crustal viscosity contrast between the foreland and the central part of the Alps, the latter being weaker with a viscosity of 1021 Pa s, is needed. The vertical rates are enhanced if the strong uppermost mantle beneath the Moho is interrupted across the Alps, therefore allowing a weak vertical rheological anomaly over the entire lithosphere.</description>
<date>2016-04-16</date>
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