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The Mw = 6.3, November 21, 2004, Les Saintes earthquake (Guadeloupe): Tectonic setting, slip model and static stress changes.

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The Mw = 6.3, November 21, 2004, Les Saintes earthquake (Guadeloupe): Tectonic setting, slip model and static stress changes.

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dc.contributor.author Feuillet, Nathalie.
dc.contributor.author Beauducel, François.
dc.contributor.author Jacques, E.
dc.contributor.author Tapponnier, Paul.
dc.contributor.author Delouis, B.
dc.contributor.author Bazin, S.
dc.contributor.author Vallée, M.
dc.contributor.author King, G. C. P.
dc.date.accessioned 2012-09-27T03:34:29Z
dc.date.available 2012-09-27T03:34:29Z
dc.date.copyright 2011
dc.date.issued 2012-09-27
dc.identifier.citation Feuillet, N., Beauducel, F., Jacques, E., Tapponnier, P., Delouis, B., Bazin, S., et al. (2011). The Mw = 6.3, November 21, 2004, Les Saintes earthquake (Guadeloupe): tectonic setting, slip model and static stress changes. Journal of Geophysical Research, 116.
dc.identifier.issn 0148-0227
dc.identifier.uri http://hdl.handle.net/10220/8649
dc.description.abstract On November 21, 2004, a magnitude 6.3 earthquake occurred offshore, 10 km south of Les Saintes archipelago in Guadeloupe (French West Indies). There were more than 30000 aftershocks recorded in the following two years, most of them at shallow depth near the islands of the archipelago. The main shock and its main aftershock of February 14, 2005 (Mw = 5.8) ruptured a NE-dipping normal fault (Roseau fault), mapped and identified as active from high-resolution bathymetric data a few years before. This fault belongs to an arc-parallel en echelon fault system that follows the inner edge of the northern part of the Lesser Antilles arc, accommodating the sinistral component of oblique convergence between the North American and Caribbean plates. The distribution of aftershocks and damage (destruction and landslides) are consistent with the main fault plane location and attitude. The slip model of the main shock, obtained by inverting jointly global broadband and local strong motion records, is characterized by two main slip zones located 5 to 10 km to the SE and NW of the hypocenter. The main shock is shown to have increased the Coulomb stress at the tips of the ruptured plane by more than 4 bars where most of the aftershocks occurred, implying that failures on fault system were mainly promoted by static stress changes. The earthquake also had an effect on volcanic activity since the Boiling Lake in Dominica drained twice, probably as a result of the extensional strain induced by the earthquake and its main aftershock.
dc.language.iso en
dc.relation.ispartofseries Journal of geophysical research
dc.rights © 2011 American Geophysical Union. This paper was published in Journal of Geophysical Research and is made available as an electronic reprint (preprint) with permission of American Geophysical Union. The paper can be found at the following official URL: [article URL].  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
dc.subject DRNTU::Science::Geology::Volcanoes and earthquakes.
dc.title The Mw = 6.3, November 21, 2004, Les Saintes earthquake (Guadeloupe): Tectonic setting, slip model and static stress changes.
dc.type Journal Article
dc.identifier.doi http://dx.doi.org/10.1029/2011JB008310
dc.description.version Published version

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