Seismic activity offshore Martinique and Dominica islands (Central Lesser Antilles subduction zone) from temporary onshore and offshore seismic networks | INSTITUT DE PHYSIQUE DU GLOBE DE PARIS

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  Seismic activity offshore Martinique and Dominica islands (Central Lesser Antilles subduction zone) from temporary onshore and offshore seismic networks

Type de publication:

Journal Article

Source:

Tectonophysics, Volume 603, p.68-78 (2013)

ISBN:

0040-1951

Mots-clés:

UMR 7154 ; Sismologie ; Lesser Antilles Arc; Subduction zone; Seismicity; Ocean bottom seismometer

Résumé:

This work focuses on the analysis of a unique set of seismological data recorded by two temporary networks of seismometers deployed onshore and offshore in the Central Lesser Antilles Island Arc from Martinique to Guadeloupe islands. During the whole recording period, extending from January to the end of August 2007, more than 1300 local seismic events were detected in this area. A subset of 769 earthquakes was located precisely by using HypoEllipse. We also computed focal mechanisms using P-wave polarities of the best azimuthally constrained earthquakes.