Darwin seismic gap closed by the 2010 Maule earthquake

The Maule earthquake (Mw 8.8) that affected south-central Chile on February 27, 2010 was preceded by the 1835 event documented by FitzRoy and Darwin. The relation between both events has been controversial. Fault slip in 2010 estimated by Lorito et al. (2011) is less than expected from 175 years of...

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Autores principales:	Melnick,Daniel, Moreno,Marcos, Cisternas,Marco, Tassara,Andrés
Lenguaje:	English
Publicado:	Servicio Nacional de Geología y Minería (SERNAGEOMIN) 2012
Materias:	Maule earthquake Coseismic slip distribution Slip deficit Seismic gap
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062012000300011
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spelling	oai:scielo:S0718-710620120003000112012-11-15Darwin seismic gap closed by the 2010 Maule earthquakeMelnick,DanielMoreno,MarcosCisternas,MarcoTassara,Andrés Maule earthquake Coseismic slip distribution Slip deficit Seismic gap The Maule earthquake (Mw 8.8) that affected south-central Chile on February 27, 2010 was preceded by the 1835 event documented by FitzRoy and Darwin. The relation between both events has been controversial. Fault slip in 2010 estimated by Lorito et al. (2011) is less than expected from 175 years of strain accumulation, leading them to conclude only limited overlap between the 2010 and 1835 events, and that a Mw 7.5-8 event could still strike the Concepción region. However, Lorito et al. 's model was based on displacements obtained from only 6 GPS stations and underpredicts observations from recent studies. Here we show that an alternative model based on 169 GPS displacements reproduces the data better, suggesting Lorito et al. 's main conclusion is not correct. Based on a slip deficit map, we suggest the seismic gap opened in 1835 was most likely closed in 2010.info:eu-repo/semantics/openAccessServicio Nacional de Geología y Minería (SERNAGEOMIN)Andean geology v.39 n.3 20122012-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062012000300011en10.5027/andgeoV39n3-a11
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Maule earthquake Coseismic slip distribution Slip deficit Seismic gap
spellingShingle	Maule earthquake Coseismic slip distribution Slip deficit Seismic gap Melnick,Daniel Moreno,Marcos Cisternas,Marco Tassara,Andrés Darwin seismic gap closed by the 2010 Maule earthquake
description	The Maule earthquake (Mw 8.8) that affected south-central Chile on February 27, 2010 was preceded by the 1835 event documented by FitzRoy and Darwin. The relation between both events has been controversial. Fault slip in 2010 estimated by Lorito et al. (2011) is less than expected from 175 years of strain accumulation, leading them to conclude only limited overlap between the 2010 and 1835 events, and that a Mw 7.5-8 event could still strike the Concepción region. However, Lorito et al. 's model was based on displacements obtained from only 6 GPS stations and underpredicts observations from recent studies. Here we show that an alternative model based on 169 GPS displacements reproduces the data better, suggesting Lorito et al. 's main conclusion is not correct. Based on a slip deficit map, we suggest the seismic gap opened in 1835 was most likely closed in 2010.
author	Melnick,Daniel Moreno,Marcos Cisternas,Marco Tassara,Andrés
author_facet	Melnick,Daniel Moreno,Marcos Cisternas,Marco Tassara,Andrés
author_sort	Melnick,Daniel
title	Darwin seismic gap closed by the 2010 Maule earthquake
title_short	Darwin seismic gap closed by the 2010 Maule earthquake
title_full	Darwin seismic gap closed by the 2010 Maule earthquake
title_fullStr	Darwin seismic gap closed by the 2010 Maule earthquake
title_full_unstemmed	Darwin seismic gap closed by the 2010 Maule earthquake
title_sort	darwin seismic gap closed by the 2010 maule earthquake
publisher	Servicio Nacional de Geología y Minería (SERNAGEOMIN)
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062012000300011
work_keys_str_mv	AT melnickdaniel darwinseismicgapclosedbythe2010mauleearthquake AT morenomarcos darwinseismicgapclosedbythe2010mauleearthquake AT cisternasmarco darwinseismicgapclosedbythe2010mauleearthquake AT tassaraandres darwinseismicgapclosedbythe2010mauleearthquake
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Darwin seismic gap closed by the 2010 Maule earthquake

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