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dc.contributor.author Condori Quispe, Cristobal
dc.contributor.author França, George S.
dc.contributor.author Tavera, Hernando
dc.contributor.author Albuquerque, Diogo F.
dc.contributor.author Bishop, Brandon T.
dc.contributor.author Beck, Susan L.
dc.date.accessioned 2018-08-06T12:39:47Z
dc.date.available 2018-08-06T12:39:47Z
dc.date.issued 2017-07
dc.identifier.govdoc index-oti2018 (NB)
dc.identifier.issn 8959811
dc.identifier.uri http://repositorio.igp.gob.pe/handle/IGP/2249
dc.description En: Journal of South American Earth Sciences, v. 76, (July 2017), p. 11-24. es_ES
dc.description.abstract "In this study, we present results from teleseismic receiver functions, in order to investigate the crustal thickness and Vp/Vs ratio beneath northern Peru. A total number of 981 receiver functions were analyzed, from data recorded by 28 broadband seismic stations from the Peruvian permanent seismic network, the regional temporary SisNort network and one CTBTO station. The Moho depth and average crustal Vp/Vs ratio were determined at each station using the H-k stacking technique to identify the arrival times of primary P to S conversion and crustal reverberations (PpPms, PpSs + PsPms). The results show that the Moho depth correlates well with the surface topography and varies significantly from west to east, showing a shallow depth of around 25 km near the coast, a maximum depth of 55–60 km beneath the Andean Cordillera, and a depth of 35–40 km further to the east in the Amazonian Basin. The bulk crustal Vp/Vs ratio ranges between 1.60 and 1.88 with the mean of 1.75. Higher values between 1.75 and 1.88 are found beneath the Eastern and Western Cordilleras, consistent with a mafic composition in the lower crust. In contrast values vary from 1.60 to 1.75 in the extreme flanks of the Eastern and Western Cordillera indicating a felsic composition. We find a positive relationship between crustal thickness, Vp/Vs ratio, the Bouguer anomaly, and topography. These results are consistent with previous studies in other parts of Peru (central and southern regions) and provide the first crustal thickness estimates for the high cordillera in northern Peru." es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher Elsevier es_ES
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S089598111630150X es_ES
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S089598111630150X es_ES
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.rights.uri info:eu-repo/semantics/restrictedAccess es_ES
dc.source Repositorio institucional - IGP es_ES
dc.subject Geología estructural--Perú es_ES
dc.subject Estaciones sismológicas--Perú es_ES
dc.subject Tierra (Planeta)--Corteza es_ES
dc.subject Cordillera Occidental (Perú) es_ES
dc.subject Cordillera Oriental (Perú) es_ES
dc.subject Orogenia es_ES
dc.subject Sismología--Perú es_ES
dc.title Crustal structure of north Peru from analysis of teleseismic receiver functions es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde Geología aplicada es_ES
dc.subject.ocde Sismología es_ES
dc.subject.ocde Perú es_ES
dc.subject.ocde Región andina es_ES
dc.subject.ocde Física de suelos es_ES
dc.identifier.journal Journal of South American Earth Sciences es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi 10.1016/j.jsames.2017.02.006 es_ES

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