A great earthquake rupture across a rapidly evolving three-plate boundary

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

On 1 April 2007 a great, tsunamigenic earthquake (moment magnitude 8.1) ruptured the Solomon Islands subduction zone at the triple junction where the Australia and Solomon Sea-Woodlark Basin plates simultaneously underthrust the Pacific plate with different slip directions. The associated abrupt change in slip direction during the great earthquake drove convergent anelastic deformation of the upper Pacific plate, which generated localized uplift in the forearc above the subducting Simbo fault, potentially amplifying local tsunami amplitude. Elastic deformation during the seismic cycle appears to be primarily accommodated by the overriding Pacific forearc. This earthquake demonstrates the seismogenic potential of extremely young subducting oceanic lithosphere, the ability of ruptures to traverse substantial geologic boundaries, and the consequences of complex coseismic slip for uplift and tsunamigenesis.

Original languageEnglish (US)
Pages (from-to)226-229
Number of pages4
JournalScience
Volume324
Issue number5924
DOIs
StatePublished - Apr 10 2009

All Science Journal Classification (ASJC) codes

  • General

Fingerprint Dive into the research topics of 'A great earthquake rupture across a rapidly evolving three-plate boundary'. Together they form a unique fingerprint.

Cite this