Great earthquakes in slow-subduction, low-taper margins

M-A Gutscher, Graham Westbrook, S Lallemand, F Funiciello

Research output: Chapter in Book/Report/Conference proceedingChapter


The seismic hazard presented by slow subduction zones is not well known. While there is a widely accepted apparent relation between "fast-young plate" subduction and great earthquake generation (e.g., Chile, 1960), the seismic record indicates that slow subduction zones are also capable of generating mega-thrust earthquakes (M > 8.2). Available data on the recurrence interval for slow subduction margins, suggests that repeat times are longer than for more rapid convergence margins (oil the order of several hundred to a few thousand years). For several of these margins, however, no shallow dipping thrust earthquake focal mechanisms are observed and no mega-thrust earthquakes known either. Slow subduction zones (v
Original languageEnglish
Title of host publicationSubduction Zone Geodynamics
ISBN (Electronic)9783540879749
Publication statusPublished - 1 Jan 2009

Publication series

NameFrontiers in Earth Sciences
ISSN (Print)1863-4621


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