globalchange  > 气候变化与战略
DOI: 10.1016/j.earscirev.2019.01.005
论文题名:
Present-day uplift of the European Alps: Evaluating mechanisms and models of their relative contributions
作者: Sternai P.; Sue C.; Husson L.; Serpelloni E.; Becker T.W.; Willett S.D.; Faccenna C.; Di Giulio A.; Spada G.; Jolivet L.; Valla P.; Petit C.; Nocquet J.-M.; Walpersdorf A.; Castelltort S.
刊名: Earth Science Reviews
ISSN: 00128252
出版年: 2019
卷: 190
起始页码: 589
结束页码: 604
语种: 英语
中文关键词: Deglaciation ; Erosion ; European Alps ; Lithospheric structural changes ; Mantle flow ; Vertical displacement rate
英文关键词: correlation ; crustal shortening ; crustal thickening ; deformation ; deglaciation ; displacement ; erosion ; lithospheric structure ; mantle convection ; uplift ; Alps
英文摘要: Recent measurements of surface vertical displacements of the European Alps show a correlation between vertical velocities and topographic features, with widespread uplift at rates of up to ~2–2.5 mm/a in the North-Western and Central Alps, and ~1 mm/a across a continuous region from the Eastern to the South-Western Alps. Such a rock uplift rate pattern is at odds with the horizontal velocity field, characterized by shortening and crustal thickening in the Eastern Alps and very limited deformation in the Central and Western Alps. Proposed mechanisms of rock uplift rate include isostatic response to the last deglaciation, long-term erosion, detachment of the Western Alpine slab, as well as lithospheric and surface deflection due to mantle convection. Here, we assess previous work and present new estimates of the contributions from these mechanisms. Given the large range of model estimates, the isostatic adjustment to deglaciation and erosion are sufficient to explain the full observed rate of uplift in the Eastern Alps, which, if correct, would preclude a contribution from horizontal shortening and crustal thickening. Alternatively, uplift is a partitioned response to a range of mechanisms. In the Central and Western Alps, the lithospheric adjustment to deglaciation and erosion likely accounts for roughly half of the rock uplift rate, which points to a noticeable contribution by mantle-related processes such as detachment of the European slab and/or asthenospheric upwelling. While it is difficult to independently constrain the patterns and magnitude of mantle contributions to ongoing Alpine vertical displacements at present, future data should provide additional insights. Regardless, interacting tectonic and surface mass redistribution processes, rather than an individual forcing, best explain ongoing Alpine elevation changes. © 2019 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165937
Appears in Collections:气候变化与战略

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作者单位: Département de Sciences de la Terre, Université de Genève, Geneva, Switzerland; Chrono-Environnement, CNRS, Université de Bourgogne Franche-Comté, Besançon, France; Université Grenoble Alpes, CNRS, IRD, IFSTAR, ISTERRE, Université Savoie Mont Blanc, Grenoble, 38000, France; Istituto Nazionale di Geofisica e Vulcanologia, Centro Nazionale Terremoti, Bologna, Italy; Institute for Geophysics, Department of Geological Sciences, Jackson School of Geosciences, The University Texas at Austin, Austin, TX, United States; Erdwissenschaften, Eidgenössische Technische Hochschule Zürich (ETH), Zurich, Switzerland; Dipartimento di Scienze, Università di Roma III, Rome, Italy; Dipartimento di Scienze della Terra e dell'Ambiente, Università di Pavia, Pavia, Italy; Università degli Studi di Urbino “Carlo Bo”, Urbino, Italy; Sorbonne Université, Paris, France; Institute of Geological Sciences, Oeschger Center for Climate Research, University of Bern, Switzerland; Geoazur, IRD, Observatoire de la Côte d'Azur, CNRS, Université de Nice Sophia-Antipolis, Valbonne, France; Institut de Physique du Globe de Paris, Paris, France

Recommended Citation:
Sternai P.,Sue C.,Husson L.,et al. Present-day uplift of the European Alps: Evaluating mechanisms and models of their relative contributions[J]. Earth Science Reviews,2019-01-01,190
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