DOI: 10.1016/j.earscirev.2019.04.005
论文题名: Chevrons: Origin and relevance for the reconstruction of past wind regimes
作者: Vimpere L. ; Kindler P. ; Castelltort S.
刊名: Earth Science Reviews
ISSN: 00128252
出版年: 2019
卷: 193 起始页码: 317
结束页码: 332
语种: 英语
中文关键词: 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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165951
Appears in Collections: 气候变化与战略
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作者单位: Department of Earth Sciences, University of Geneva, Rue des Maraîchers 13, Geneva, 1205, Switzerland
Recommended Citation:
Vimpere L.,Kindler P.,Castelltort S.. Chevrons: Origin and relevance for the reconstruction of past wind regimes[J]. Earth Science Reviews,2019-01-01,193