New relative sea-level insights into the isostatic history of the Western Mediterranean

QUATERNARY SCIENCE REVIEWS

卷:201

Article

Vacchi, Matteo^1,2  Ghilardi, Matthieu³  Melis, Rita T.⁴  Spada, Giorgio⁵  Giaime, Matthieu⁶  Marriner, Nick⁷  Lorscheid, Thomas⁸  Morhange, Christophe^3,11  Burjachs, Francesc^9,10  Rovere, Alessio⁸ 

[1] Univ Exeter, Coll Life & Environm Sci, Geog, Exeter EX4 4RJ, Devon, England

[2] Univ Pisa, Dipartimento Sci Terra, Via S Maria 53, I-56126 Pisa, Italy

[3] Aix Marseille Univ, Coll France, IRD, INRA Aix En Provence,CNRS CEREGE,UMR 7330, Marseille, France

[4] Univ Cagliari, Dipartimento Sci Chim & Geol, Via Trentino 51, I-09127 Cagliari, Italy

[5] Univ Urbino, Dipartimento Sci Pure & Applicate DiSPeA, Urbino, Italy

[6] Univ Durham, Dept Geog, South Rd, Durham DH1 3LE, England

[7] Univ Franche Comte, UFR ST, CNRS Chronoenvironm UMR6249, Besancon, France

[8] Univ Bremen, ZMT, Marum, D-28359 Bremen, Germany

[9] ICREA, Barcelona, Catalonia, Spain

[10] URV, Inst Catala Paleoecol Humana & Evolucio Social, IPHES, Campus Sescelades, Tarragona, Catalonia, Spain

[11] Univ Haifa, Leon Recanati Inst Maritime Studies, Rims, IL-31905 Haifa, Israel

关键词: Sea-level changes;    Isostatic adjustment;    Vertical crustal motion;    Holocene;    Mediterranean sea;   

DOI  :  10.1016/j.quascirev.2018.10.025

来源: Elsevier

【 摘 要 】

A recent suite of Relative Sea-Level (RSL) data for the past 12 ka BP has provided new insights into the sea-level histories of the western Mediterranean region. Our analysis of the chronostratigraphic context of sea-level indicators from Spain (Catalonia, the Balearic Islands and the Gulf of Valencia), France (Corsica Island) and Italy (Sardinia Island) has yielded 162 new sea-level index and limiting points. These data have considerably enhanced previous RSL compilations, in addition to improving the quality of spatio-temporal sea-level reconstructions and our capacity to estimate isostatic-related vertical motions in the western Mediterranean basin. The glacial and hydro-isostatic adjustment (GIA) pattern elucidated by the new database shows discrepancy with respect to those predicted by the available GIA models. In particular, the new results underscore a non-coherent isostatic response of the central portion of the western Mediterranean, with the Balearic Islands manifesting significant departures from the sea-level histories of Corsica, Sardinia and, more generally, along most of the western Mediterranean coast. Our results are a crucial contribution to defining both the pattern and the magnitude of the isostatic signal along the western Mediterranean coast. In fact, vertical isostatic motions represent a key to better assess any possible post-industrial acceleration in sea-level rise and to define future scenarios of coastal inundation in the context of global change. (C) 2018 Elsevier Ltd. All rights reserved.

【 授权许可】

Free