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dc.contributor.author
Alvarado, Patricia Monica
dc.contributor.author
Barrientos, Sergio
dc.contributor.author
Saez, Mauro
dc.contributor.author
Astroza, Maximiliano
dc.contributor.author
Beck, Susan
dc.date.available
2018-04-25T14:26:06Z
dc.date.issued
2009-06
dc.identifier.citation
Alvarado, Patricia Monica; Barrientos, Sergio; Saez, Mauro; Astroza, Maximiliano; Beck, Susan; Source study and tectonic implications of the historic 1958 Las Melosas crustal earthquake, Chile, compared to earthquake damage; Elsevier Science; Physics of the Earth and Planetary Interiors; 175; 1-2; 6-2009; 26-36
dc.identifier.issn
0031-9201
dc.identifier.uri
http://hdl.handle.net/11336/43423
dc.description.abstract
The 4 September 1958 earthquake has been the largest event recorded at shallow depths in the western flank of the Andes on Chilean territory. New estimates of fault orientation, depth and size have been carried out using modern techniques of body-wave modeling. Two possible fault planes solutions with right-lateral displacement on an east-west fault or left-lateral displacement on a north-south fault nucleated at 5–9 km depth produce the best fit to teleseismic recordings. A seismic moment M0 of 0.227 × 1019 N m associated with a moment-magnitude Mw of 6.3 has been estimated with these techniques, which is a more reliable estimation of earthquake size than the 0.4–0.7 units larger surface-wave magnitude Ms earlier reported. Although no surface rupture for the 1958 Las Melosas crustal earthquake was reported, the displacement along east-west structures like that one suggested for one of the fault plane in our focal mechanism solution seems to be an efficient mechanism to accommodate differences in shortening from north to south in the High Andean Cordillera. Reports on damage, landslide effects as well as re-analysis of intensities associated with the new seismic source estimations for the 1958 Las Melosas earthquake are presented to further estimate the hazard to which this zone, and others along the western foothills of the Andes, is exposed.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Andean Cordillera
dc.subject
Crustal Seismicity
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Neotectonics
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Seismic Hazard
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Meteorología y Ciencias Atmosféricas
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Source study and tectonic implications of the historic 1958 Las Melosas crustal earthquake, Chile, compared to earthquake damage
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-04-10T17:48:34Z
dc.journal.volume
175
dc.journal.number
1-2
dc.journal.pagination
26-36
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Alvarado, Patricia Monica. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geofísica y Astronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Barrientos, Sergio. Universidad de Chile; Chile
dc.description.fil
Fil: Saez, Mauro. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geofísica y Astronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Astroza, Maximiliano. Universidad de Chile; Chile
dc.description.fil
Fil: Beck, Susan. University of Arizona; Estados Unidos
dc.journal.title
Physics of the Earth and Planetary Interiors
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.pepi.2008.03.015
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S003192010900048X
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