globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2016.03.020
Scopus记录号: 2-s2.0-84962816219
论文题名:
Extreme events in the sedimentary record of maar Lake Pavin: Implications for natural hazards assessment in the French Massif Central
作者: Chassiot L.; Chapron E.; Di Giovanni C.; Albéric P.; Lajeunesse P.; Lehours A.-C.; Meybeck M.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
卷: 141
起始页码: 9
结束页码: 25
语种: 英语
英文关键词: Lake outburst ; Limnic eruption ; Maar lake ; Natural hazards ; Slope failure ; Slump ; Turbidite
Scopus关键词: Deposits ; Drops ; Earthquakes ; Geochemistry ; Geophysics ; Gravitation ; Hazards ; Iron deposits ; Sedimentology ; Sediments ; Slope stability ; Stratigraphy ; Limnic eruption ; Natural hazard ; Slope failure ; Slump ; Turbidite ; Lakes ; earthquake trigger ; extreme event ; geological record ; hazard assessment ; lacustrine deposit ; natural hazard ; organic geochemistry ; overturn ; plateau ; radiocarbon dating ; slope failure ; slumping ; stratigraphy ; swath bathymetry ; turbidite ; Auvergne ; France ; Massif Central ; Pavin Lake ; Puy de Dome [Auvergne]
英文摘要: A set of sedimentary cores, high resolution swath bathymetry and subbottom profiler data provides new insights on sedimentary processes in meromictic maar Lake Pavin, France. Three sedimentary environments (i.e., littoral, plateau and basin) have been identified in the lake from sediment composition using bulk organic geochemistry and the analysis of hydroacoustic images. Various forms of rapidly deposited layers (RDLs) have been identified and radiocarbon dated. An up to date stratigraphy of sedimentary events matching coeval RDLs across the lake is presented and illustrates a wide range of natural hazards linked to Lake Pavin during the last 2000 years. In AD 600, a sudden lake outburst triggered a slump deposit along with a 9 m lake-level drop that drove shifts in sedimentary organic matter composition. Outside the lake, outburst flood deposits have been described downstream and provide sedimentary evidence for this event. The lake-level drop also favored the generation of gravity reworking processes, as shown by (1) a regional earthquake-triggered large slope failure on the plateau connected to a mass-wasting deposit in the basin dated to AD 1300, and (2) a succession of turbidites in AD 1825 and AD 1860 contemporaneous to two historic earthquakes, suggesting that this lake is sensitive to earthquakes with a minimum epicentral intensity of V. Finally, past observations of lake water color changes in AD 1783 and AD 1936, similar to reports in other meromictic lakes, match iron-rich deposits identified in maar lake sediments and suggest that Lake Pavin could have undergone limnic eruptions. © 2016 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59601
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作者单位: Institut des Sciences de la Terre d'Orléans (ISTO), UMR 7327, CNRS, Université d'Orléans, BRGM, 1A, rue de la Férollerie, Orléans Cedex 2, France; Géographie de l'Environnement (GEODE), UMR 5602 CNRS, Université Toulouse 2 Jean Jaurès, Allée A. Machado, Toulouse Cedex, France; Centre d'Etudes Nordiques (CEN), Département de Géographie, Université Laval, Pavillon Abitibi-Price, 2405, rue de la TerrasseQC, Canada; Laboratoire Microorganismes, Génome et Environnement (LMGE), UMR 6023, CNRS, Université Blaise Pascal, 24 avenue des Landais, Aubière, France; Milieux Environnementaux, Transferts et Interactions dans les hydrosystèmes et les Sols (METIS), UMR 7619, CNRS, Université Pierre et Marie Curie, 4 place Jussieu, Paris cedex 05, France

Recommended Citation:
Chassiot L.,Chapron E.,Di Giovanni C.,et al. Extreme events in the sedimentary record of maar Lake Pavin: Implications for natural hazards assessment in the French Massif Central[J]. Quaternary Science Reviews,2016-01-01,141
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