Improved epicentral relocation in the offshore Campos basin, SE Brazil, with the RSTT 3D model

Página do item simplificado
dc.contributor.authorNeves, Felipe dos Anjos
dc.contributor.authorAssumpção, Marcelo
dc.contributor.authorDourado, João Carlos [UNESP]
dc.contributor.authorLe Diagon, Frank
dc.contributor.authorOrtolan, Antonio
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionSchlumberger
dc.contributor.institutionEXP/GEOF/AG
dc.date.accessioned2018-12-11T17:37:01Z
dc.date.available2018-12-11T17:37:01Z
dc.date.issued2018-08-01
dc.description.abstractEarthquake location on the continental shelf is often poor because: a) the seismic stations are mainly located on the continent, to one side of the epicenter (which means that any error in the velocity model causes a large epicentral error), and b) 1D models are commonly used in a region with strong lateral variations in the crustal structure. We tested the use of the 3D regional seismic travel time (RSTT) model to relocate an event of magnitude 3.8 mb that occurred on July the 1 st, 2010, in the Campos basin, southeast (SE) Brazil. This event was also recorded by a seismic vessel, which allowed an estimate of the azimuth of the incoming P-waves. The new location based on the 3D model is more consistent with the data recorded by the streamers, which shows that the use of 3D RSTT models can improve earthquake locations offshore. Several other events in the SE offshore basins were relocated with the 3D RSTT model, which confirmed the trend of epicenters lying beneath the continental slope where sediment thickness tends to be highest.en
dc.description.affiliationSeismology Center IAG-USP
dc.description.affiliationIGCE-UNESP
dc.description.affiliationSchlumberger
dc.description.affiliationPetrobras EXP/GEOF/AG
dc.description.affiliationUnespIGCE-UNESP
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdCNPq: 306547/2013-9
dc.format.extent121-125
dc.identifierhttp://dx.doi.org/10.1016/j.jsames.2018.05.002
dc.identifier.citationJournal of South American Earth Sciences, v. 85, p. 121-125.
dc.identifier.doi10.1016/j.jsames.2018.05.002
dc.identifier.file2-s2.0-85046850100.pdf
dc.identifier.issn0895-9811
dc.identifier.scopus2-s2.0-85046850100
dc.identifier.urihttp://hdl.handle.net/11449/179855
dc.language.isoeng
dc.relation.ispartofJournal of South American Earth Sciences
dc.relation.ispartofsjr0,829
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectContinental shelf
dc.subjectRegional 3D epicentral location
dc.subjectRSTT
dc.titleImproved epicentral relocation in the offshore Campos basin, SE Brazil, with the RSTT 3D modelen
dc.typeArtigo

Arquivos

Pacote Original
Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
2-s2.0-85046850100.pdf
Tamanho:
2.79 MB
Formato:
Adobe Portable Document Format
Descrição:
Baixar

Coleções

Artigos - Geologia Aplicada - IGCE