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Intense foreshocks and a slow slip event preceded the 2014 Iquique Mw 8.1 earthquake.
Ruiz, S; Metois, M; Fuenzalida, A; Ruiz, J; Leyton, F; Grandin, R; Vigny, C; Madariaga, R; Campos, J.
Afiliação
  • Ruiz S; Departamento de Geofísica, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago, Chile. sruiz@dgf.uchile.cl.
  • Metois M; Istituto Nazionale di Geofisica e Vulcanologia, Centro Nazionale Terremoti, Rome, Italy.
  • Fuenzalida A; School of Environmental Sciences, University of Liverpool, Liverpool, UK.
  • Ruiz J; Departamento de Geofísica, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago, Chile.
  • Leyton F; Centro Sismológico Nacional, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago, Chile.
  • Grandin R; Institut de Physique du Globe de Paris, Sorbonne Paris Cité, Université Paris Diderot, UMR 7154 CNRS, Paris, France.
  • Vigny C; Laboratoire de Geologie, UMR 8538 CNRS Ecole Normale Superieure, Paris, France.
  • Madariaga R; Laboratoire de Geologie, UMR 8538 CNRS Ecole Normale Superieure, Paris, France.
  • Campos J; Departamento de Geofísica, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago, Chile.
Science ; 345(6201): 1165-9, 2014 Sep 05.
Article em En | MEDLINE | ID: mdl-25061132
The subduction zone in northern Chile is a well-identified seismic gap that last ruptured in 1877. The moment magnitude (Mw) 8.1 Iquique earthquake of 1 April 2014 broke a highly coupled portion of this gap. To understand the seismicity preceding this event, we studied the location and mechanisms of the foreshocks and computed Global Positioning System (GPS) time series at stations located on shore. Seismicity off the coast of Iquique started to increase in January 2014. After 16 March, several Mw > 6 events occurred near the low-coupled zone. These events migrated northward for ~50 kilometers until the 1 April earthquake occurred. On 16 March, on-shore continuous GPS stations detected a westward motion that we model as a slow slip event situated in the same area where the mainshock occurred.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Science Ano de publicação: 2014 Tipo de documento: Article País de afiliação: Chile País de publicação: Estados Unidos
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Science Ano de publicação: 2014 Tipo de documento: Article País de afiliação: Chile País de publicação: Estados Unidos