气候变化领域集成服务门户(CCPortal): Chevrons: Origin and relevance for the reconstruction of past wind regimes

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DOI	10.1016/j.earscirev.2019.04.005
	Chevrons: Origin and relevance for the reconstruction of past wind regimes
	Vimpere L.; Kindler P.; Castelltort S.
发表日期	2019
ISSN	00128252
起始页码	317
结束页码	332
卷号	193
英文摘要	Since its first use in the late 80's, the term chevron has been employed in numerous studies to describe large U- and V-shaped ridges found in or near shorelines worldwide. Most studies have so far focused on Bahamian chevrons that are exclusively of Late Pleistocene age, and on the supposed Holocene chevrons found in S-Madagascar and Australia. In the Bahamas, these deposits have been interpreted as the product of extreme storms at the end of the last interglacial (LIG) warm period. In contrast, the extensive chevrons complex exposed in S-Madagascar and on the western coast of Australia have been associated with a tsunami induced by a meteorite impact. Finally, several authors have also proposed a non-catastrophic (i.e. eolian) origin based on the recognized importance of wind-related processes in these coastal areas, and term such deposits parabolic dunes. In this paper, we collect and synthesize existing data on the morphology, sedimentology and age of these chevrons, and review the different interpretations proposed in the literature with the aim to lay out a consistent database to assist further investigations on these important coastal morphologies. In addition, we generated a synthesis of wind data at the three study areas, which highlights the relationship between present wind regimes and chevrons morphologies. The ubiquity of chevrons (likely actually parabolic dunes) in coastal areas around the globe and their relationship with coastal processes makes them crucial archives for reconstructing past wind regimes. © 2019 Elsevier B.V.
关键词	Chevron Climate change Coastal risk Dune Eolianite Storm wave Tsunami
英文关键词	climate change; coastal morphology; dune; reconstruction; storm surge; tsunami; wind field; Australia; Bahamas; Madagascar
语种	英语
来源期刊	Earth Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/203578
作者单位	Department of Earth Sciences, University of Geneva, Rue des Maraîchers 13, Geneva, 1205, Switzerland
推荐引用方式 GB/T 7714	Vimpere L.,Kindler P.,Castelltort S.. Chevrons: Origin and relevance for the reconstruction of past wind regimes[J],2019,193.
APA	Vimpere L.,Kindler P.,&Castelltort S..(2019).Chevrons: Origin and relevance for the reconstruction of past wind regimes.Earth Science Reviews,193.
MLA	Vimpere L.,et al."Chevrons: Origin and relevance for the reconstruction of past wind regimes".Earth Science Reviews 193(2019).