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dc.contributor.author Schneider, John F.
dc.contributor.author Selwyn Sacks, I.
dc.contributor.author Huaco, Daniel
dc.contributor.author Ocola, Leonidas
dc.contributor.author Norabuena Ortiz, Edmundo
dc.contributor.author Flores, Antonio
dc.coverage.spatial Perú
dc.date.accessioned 2018-07-31T19:02:28Z
dc.date.available 2018-07-31T19:02:28Z
dc.date.issued 1988-11
dc.identifier.citation Schneider, J. F., Selwyn, I., Huaco, D., Ocola, L., Norabuena, E. & Flores, A. (1988). Spatial distribution and B value of intermediate-depth earthquakes beneath central Peru.==$Geophysical Research Letter, 15$==(12),1421-1424. https://doi.org/10.1029/GL015i012p01421 es_ES
dc.identifier.govdoc index-oti2018
dc.identifier.uri http://hdl.handle.net/20.500.12816/2143
dc.description.abstract We have investigated the spatial distribution of microseismicity at intermediate depth in the Wadati-Benioff (W-B) zone beneath central Peru. Within a 100 to 150 km depth range in the subducting Nazca plate, 67 event hypocenters define a horizontally subducting zone (horizontal zone) 450 to 600 km from the trench, and a zone of increasing dip (resubduction zone) 600 to 700 km from the trench. Although the shape of the W-B zone is generally consistent with previous observations from teleseismic data, the distribution of seismicity is not. In a 550 km wide band extending from 400 to 750 km from the trench, the density of teleseismicity (mb > 4, 1971–1981) increases as a function of distance from the trench, while the density of microseismicity (1.6 < mb < 4.2) decreases. Combining local and teleseismic data, the b value changes from .84 in the horizontal zone to .57 in the resubduction zone. This result suggests that the minimum earthquake size and/or stress drop increases in the resubduction zone. Low b-values may also be intrinsic to proximity to the seismic cut-off at 150 km depth. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher American Geophysical Union es_ES
dc.relation.ispartof urn:issn:0094-8276
dc.rights info:eu-repo/semantics/closedAccess es_ES
dc.subject Earthquakes es_ES
dc.subject Microseismicity es_ES
dc.subject Subduction es_ES
dc.subject Tectonic plate es_ES
dc.subject Seismology es_ES
dc.subject Earth sciences es_ES
dc.title Spatial distribution and B value of intermediate-depth earthquakes beneath central Peru es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.04 es_ES
dc.identifier.journal Geophysical Research Letters es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi https://doi.org/10.1029/GL015i012p01421 es_ES

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