Field survey and numerical simulation of the 21 November 2004 tsunami at Les Saintes (Lesser Antilles)
Field survey and numerical simulation of the 21 November 2004 tsunami at Les Saintes (Lesser Antilles)
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对 2004 年 11 月 21 日 Les Saintes（小安的列斯群岛）海啸的实地调查和数值模拟
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
G. Boudon
中科院分区：
文献类型：
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作者：
A. Le Friant;P. Heinrich;G. Boudon
虽然历史上小安的列斯群岛地区曾发生过几次海啸，但由于相关特征的短暂性，其特征的记录很少。最近，2004年11月21日在瓜德罗普和多米尼加之间发生的6.3级地震引发了海啸。这是上世纪该地区有记录以来最大的两次历史地震之一。实地调查使我们能够描述影响Les Saintes、Basse‐Terre（瓜德罗普）南部海岸和北方多米尼加的海啸的特征。我们用这些数据来约束海啸的产生和传播的数值模拟。11月21日的海啸提供了一个独特的机会，进一步限制在弧后地区的脆性变形模型提出了以前的构造调查，海啸的特征，并提高区域灾害评估。
Although a few historical tsunamis have occurred in the Lesser Antilles region, their characteristics are poorly documented due to the ephemeral nature of the associated signatures. Recently, a tsunami was generated following a magnitude Mw 6.3 earthquake that occurred on 21 November 2004 between Guadeloupe and Dominica. This was one of the two largest historical earthquakes recorded in this area in the last century. A field survey allowed us to characterize the tsunami which affected Les Saintes, the southern coast of Basse‐Terre (Guadeloupe) and northern Dominica. We used these data to constrain a numerical simulation of tsunami generation and propagation. The 21 November tsunami provides a unique opportunity to further constrain the models of brittle deformation in the back arc region proposed by previous tectonic investigations, to characterize the tsunami signatures and to improve regional hazards evaluation.