globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2015.10.029
Scopus记录号: 2-s2.0-84946408779
论文题名:
A new Holocene relative sea-level curve for western Brittany (France): Insights on isostatic dynamics along the Atlantic coasts of north-western Europe
作者: Goslin J.; Van Vliet Lanoë B.; Spada G.; Bradley S.; Tarasov L.; Neill S.; Suanez S.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2015
卷: 129
起始页码: 341
结束页码: 365
语种: 英语
英文关键词: Brittany ; Earth structure ; GIA models ; Holocene ; Isostasy ; Relative sea-level ; Tidal-range modelling
Scopus关键词: Aluminum ; Forecasting ; Glacial geology ; Glaciers ; Sea level ; Stratigraphy ; Tides ; Brittany ; Earth structures ; Holocenes ; Isostasy ; Relative sea level ; Tidal ranges ; Ice ; data set ; deglaciation ; Earth structure ; glacioisostasy ; Holocene ; ice sheet ; sea level change ; spatiotemporal analysis ; stratigraphy ; subsidence ; tidal range ; Antarctic Ice Sheet ; Antarctica ; Atlantic Coast [Europe] ; Bretagne ; English Channel ; Fennoscandia ; Finistere ; France ; Ireland ; United Kingdom
英文摘要: This study presents new Relative Sea Level (RSL) data that were obtained in the Finistère region (Western tip of Brittany, France) and the implications those data have for the understanding of the isostatic dynamics across north-western Europe, and more specifically along the Atlantic and Channel coasts. New stratigraphic sequences were obtained and analyzed to derive 24 new Sea-level Index Points, in which 6 are basal. These new data considerably increase the knowledge we have of the RSL evolution along the coasts of Western Brittany since the last 8 kyr B.P. From this new dataset, RSL was estimated to rise continuously over the last 8 kyr with a major inflection at ca. 6 kyr cal. BP. Our results show large vertical discrepancies between the RSL records of Brittany and South-Western UK, with the latter plotting several meters below the new data. From this comparison we suggest that the two regions underwent a very different pattern and/or amplitude of subsidence during the last 8 kyr which has implications for the spatial and temporal pattern of the peripheral bulge of the European ice sheets. We compared our data against predictions from Glacio-Isostatic Adjustment models (GIA models). There are large misfits between RSL observations and the predictions of the global (ICE-5G (VM2a) - Peltier, 2004, GLAC1-b - Tarasov and Peltier, 2002; Tarasov et al., 2012, Briggs et al., 2014) and regional UK models ("BIIS" - Bradley et al., 2009; Bradley et al., 2011; "Kuchar"- Kuchar et al., 2012), which can't be resolved through significant changes to the deglaciation history and size of the British-Irish Ice sheet. Paleo-tidal modelling corrections indicate regional changes in the tidal ranges played a negligible role in the data-model misfits. Hence, we propose that the misfits are due to some combination of: (i) unaccounted mass-loss of far-field ice-sheets (Antarctic ice-Sheet or Laurentide Ice-Sheet), (ii) unresolved differences in the deglaciation history and size of the Fennoscandian Ice sheet or, more likely, (iii) significant lateral variations in the Earth's structure across the English Channel. © 2015 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59782
Appears in Collections:过去全球变化的重建

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作者单位: Geomer Laboratory, UMR 6554 CNRS LETG, European Institute for Marine Studies, 1 Place Nicolas Copernic, Plouzané, France; Domaines Océaniques Laboratory, UMR 6538 CNRS, European Institute for Marine Studies, 1 Place Nicolas Copernic, Plouzané, France; Dipartimento di Scienze di Base e Fondamenti, University of Urbino Carlo Bo, Via Santa Chiara 27, Urbino, PU, Italy; Institute for Marine and Atmospheric Research Utrecht (IMAU), Utrecht University, Princetonplein 5, CC Utrecht, Netherlands; Department of Physics and Physical Oceanography, Memorial University of Newfoundland, St. John'sNL, Canada; School of Ocean Sciences, Bangor University, Menai Bridge, Isle of Anglesey, United Kingdom

Recommended Citation:
Goslin J.,Van Vliet Lanoë B.,Spada G.,et al. A new Holocene relative sea-level curve for western Brittany (France): Insights on isostatic dynamics along the Atlantic coasts of north-western Europe[J]. Quaternary Science Reviews,2015-01-01,129
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