The 2013 Balochistan earthquake: An extraordinary or completely ordinary event?

The 2013 Balochistan earthquake, a predominantly strike-slip event, occurred on the arcuate Hoshab fault in the eastern Makran linking an area of mainly left-lateral shear in the east to one of shortening in the west. The difficulty of reconciling predominantly strike-slip motion with this shortenin...

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Main Authors: Zhou, Y, Elliott, JR, Parsons, B, Walker, RT
Format: Journal article
Language:English
Published: American Geophysical Union 2015
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author Zhou, Y
Elliott, JR
Parsons, B
Walker, RT
author_facet Zhou, Y
Elliott, JR
Parsons, B
Walker, RT
author_sort Zhou, Y
collection OXFORD
description The 2013 Balochistan earthquake, a predominantly strike-slip event, occurred on the arcuate Hoshab fault in the eastern Makran linking an area of mainly left-lateral shear in the east to one of shortening in the west. The difficulty of reconciling predominantly strike-slip motion with this shortening has led to a wide range of unconventional kinematic and dynamic models. Here we determine the vertical component of motion on the fault using a 1 m resolution elevation model derived from postearthquake Pleiades satellite imagery. We find a constant local ratio of vertical to horizontal slip through multiple past earthquakes, suggesting the kinematic style of the Hoshab fault has remained constant throughout the late Quaternary. We also find evidence for active faulting on a series of nearby, subparallel faults, showing that failure in large, distributed and rare earthquakes is the likely method of faulting across the eastern Makran, reconciling geodetic and long-term records of strain accumulation.
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spelling oxford-uuid:a0d4cf0e-0679-47c9-903e-f3b9c9f7c3292024-02-05T08:43:33ZThe 2013 Balochistan earthquake: An extraordinary or completely ordinary event?Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a0d4cf0e-0679-47c9-903e-f3b9c9f7c329EnglishSymplectic Elements at OxfordAmerican Geophysical Union2015Zhou, YElliott, JRParsons, BWalker, RTThe 2013 Balochistan earthquake, a predominantly strike-slip event, occurred on the arcuate Hoshab fault in the eastern Makran linking an area of mainly left-lateral shear in the east to one of shortening in the west. The difficulty of reconciling predominantly strike-slip motion with this shortening has led to a wide range of unconventional kinematic and dynamic models. Here we determine the vertical component of motion on the fault using a 1 m resolution elevation model derived from postearthquake Pleiades satellite imagery. We find a constant local ratio of vertical to horizontal slip through multiple past earthquakes, suggesting the kinematic style of the Hoshab fault has remained constant throughout the late Quaternary. We also find evidence for active faulting on a series of nearby, subparallel faults, showing that failure in large, distributed and rare earthquakes is the likely method of faulting across the eastern Makran, reconciling geodetic and long-term records of strain accumulation.
spellingShingle Zhou, Y
Elliott, JR
Parsons, B
Walker, RT
The 2013 Balochistan earthquake: An extraordinary or completely ordinary event?
title The 2013 Balochistan earthquake: An extraordinary or completely ordinary event?
title_full The 2013 Balochistan earthquake: An extraordinary or completely ordinary event?
title_fullStr The 2013 Balochistan earthquake: An extraordinary or completely ordinary event?
title_full_unstemmed The 2013 Balochistan earthquake: An extraordinary or completely ordinary event?
title_short The 2013 Balochistan earthquake: An extraordinary or completely ordinary event?
title_sort 2013 balochistan earthquake an extraordinary or completely ordinary event
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AT elliottjr the2013balochistanearthquakeanextraordinaryorcompletelyordinaryevent
AT parsonsb the2013balochistanearthquakeanextraordinaryorcompletelyordinaryevent
AT walkerrt the2013balochistanearthquakeanextraordinaryorcompletelyordinaryevent
AT zhouy 2013balochistanearthquakeanextraordinaryorcompletelyordinaryevent
AT elliottjr 2013balochistanearthquakeanextraordinaryorcompletelyordinaryevent
AT parsonsb 2013balochistanearthquakeanextraordinaryorcompletelyordinaryevent
AT walkerrt 2013balochistanearthquakeanextraordinaryorcompletelyordinaryevent