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<datestamp>2018-01-11</datestamp>
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<title lang=en>Physical characteristics of subduction interface type seismogenic zones revisited</title>
<creator>Heuret, Arnauld</creator>
<creator>Lallemand, Serge</creator>
<creator>Funiciello, Francesca</creator>
<creator>Piromallo, Claudia</creator>
<creator>Faccenna, Claudio</creator>
<contributor>Dipartimento di Scienze Geologiche, Università degli Studi "Roma Tre," ; Université du Québec</contributor>
<contributor>Dynamique de la Lithosphere ; Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) - Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>INGV, Rome ; Université du Québec</contributor>
<description>International audience</description>
<source>ISSN: 1525-2027</source>
<source>EISSN: 1525-2027</source>
<source>Geochemistry, Geophysics, Geosystems</source>
<publisher>AGU and the Geochemical Society</publisher>
<identifier>hal-00617681</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00617681</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00617681/document</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00617681/file/heuretG32011.pdf</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00617681</source>
<source>Geochemistry, Geophysics, Geosystems, AGU and the Geochemical Society, 2011, 12, pp.Q01004. 〈10.1029/2010GC003230〉</source>
<identifier>DOI : 10.1029/2010GC003230</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1029/2010GC003230</relation>
<language>en</language>
<subject lang=en>subduction zones</subject>
<subject lang=en>seismicity</subject>
<subject lang=en>statistics</subject>
<subject>[SDU.STU.TE] Sciences of the Universe [physics]/Earth Sciences/Tectonics</subject>
<subject>[SDE.MCG] Environmental Sciences/Global Changes</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Based on global earthquake catalogs, the hypocenters, nodal planes, and seismic moments of worldwide subduction plate interface earthquakes were extracted for the period between 1900 and 2007. Assuming that the seismogenic zone coincides with the distribution of 5.5 <= M < 7 earthquakes, the subduction interface seismogenic zones were mapped for 80% of the trench systems and characterized with geometrical and mechanical parameters. Using this database, correlations were isolated between significant parameters to identify cause-effect relationships. Empirical laws obtained in previous studies were revisited in light of this more complete, accurate, and uniform description of the subduction interface seismogenic zone. The seismogenic zone was usually found to end in a fore-arc mantle, rather than at a Moho depth. The subduction velocity was the first-order controlling parameter for variations in the physical characteristics of plate interfaces, determining both the geometry and mechanical behavior. As such, the fast subduction zones and cold slabs were associated with large and steep plate interfaces, which, in turn, had large seismic rates. The subduction velocity could not account for the potential earthquake magnitude diversity that was observed along the trenches. Events with M-w >= 8.5 preferentially occurred in the vicinity of slab edges, where the upper plate was continental and the back-arc strain was neutral. This observation was interpreted in terms of compressive normal stresses along the plate interface. Large lateral ruptures should be promoted in neutral subduction zones due to moderate compressive stresses along the plate interface that allow the rupture to propagate laterally.</description>
<date>2011</date>
</dc>
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