Scenario source models and strong ground motion for future mega-earthquakes: application to Lima, Central Peru

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dc.contributor.authorPulido, Nelson
dc.contributor.authorAguilar, Zenón
dc.contributor.authorTavera, Hernando
dc.contributor.authorChlieh, Mohamed
dc.contributor.authorCalderón, Diana
dc.contributor.authorSekiguchi, Toru
dc.contributor.authorNakai, Shoichi
dc.contributor.authorYamazaki, Fumio
dc.coverage.spatialPerú
dc.date.accessioned2018-09-10T18:31:37Z
dc.date.available2018-09-10T18:31:37Z
dc.date.issued2015-01
dc.description.abstractThe 2011 moment magnitude (Mw) 9.0 Tohoku-Oki Japan earthquake occurred in a region where giant megathrust earthquakes were not expected. This earthquake proved the difficulty in assessing seismic hazard by relying mainly on information from historical and instrumental seismicity. To help improve the seismic-hazard assessment for such rare events, we propose a methodology to estimate the slip distribution of future megathrust earthquakes based on a model of interseismic coupling distribution in subduction margins, as well as information of historical earthquakes, and apply the method to the central Peru region, Lima. The slip model obtained from geodetic data represents the large scale features of asperities within the megathrust, which is appropriate for simulation of long-period waves and tsunami modeling. For the simulation of a broadband strong ground motion, we add small scale heterogeneities to the source slip to be able to simulate high frequencies. To achieve this purpose, we propose broadband source models constructed by adding short-wavelength slip distributions obtained from a Von Karman power spectral density function, to the slip model inferred from interseismic geodetic data. Using these slip models and assuming several hypocenter locations, we calculate a set of strong ground motions for Lima and incorporate site effects obtained from microtremors surveys and geotechnical data. Our simulated average pseudospectral accelerations (period 0.3 s) are above 1:5g for wide areas in Lima, which may be critical in terms of damage of low- to midrise masonry and reinforced concrete buildings, which characterize the majority of buildings in Lima.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationPulido, N., Aguilar, Z., Tavera, H., Chlieh, M., Calderón, D., Sekiguchi, T., ... Yamazaki, F. (2015). Scenario source models and strong ground motion for future mega-earthquakes: application to Lima, Central Peru.==$Bulletin of the Seismological Society of America, 105$==(1), 368-386. https://doi.org/10.1785/0120140098es_ES
dc.identifier.doihttps://doi.org/10.1785/0120140098es_ES
dc.identifier.govdocindex-oti2018
dc.identifier.journalBulletin of the Seismological Society of Americaes_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/2894
dc.language.isoenges_ES
dc.publisherSeismological Society of Americaes_ES
dc.relation.ispartofurn:issn:0037-1106
dc.rightsinfo:eu-repo/semantics/closedAccesses_ES
dc.subjectEarthquakeses_ES
dc.subjectSeismic riskes_ES
dc.subjectGeotechnicses_ES
dc.subjectSeismometerses_ES
dc.subjectSeismiciyes_ES
dc.subjectSeismologyes_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.00es_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.04es_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.06es_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#2.07.02es_ES
dc.titleScenario source models and strong ground motion for future mega-earthquakes: application to Lima, Central Perues_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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