Coseismic displacements from SAR image offsets between different satellite sensors: Application to the 2001 Bhuj (India) earthquake

Handle URI:
http://hdl.handle.net/10754/582597
Title:
Coseismic displacements from SAR image offsets between different satellite sensors: Application to the 2001 Bhuj (India) earthquake
Authors:
Wang, Teng ( 0000-0003-3729-0139 ) ; Wei, Shengji; Jonsson, Sigurjon ( 0000-0001-5378-7079 )
Abstract:
Synthetic aperture radar (SAR) image offset tracking is increasingly being used for measuring ground displacements, e.g., due to earthquakes and landslide movement. However, this technique has been applied only to images acquired by the same or identical satellites. Here we propose a novel approach for determining offsets between images acquired by different satellite sensors, extending the usability of existing SAR image archives. The offsets are measured between two multiimage reflectivity maps obtained from different SAR data sets, which provide significantly better results than with single preevent and postevent images. Application to the 2001 Mw7.6 Bhuj earthquake reveals, for the first time, its near-field deformation using multiple preearthquake ERS and postearthquake Envisat images. The rupture model estimated from these cross-sensor offsets and teleseismic waveforms shows a compact fault slip pattern with fairly short rise times (<3 s) and a large stress drop (20 MPa), explaining the intense shaking observed in the earthquake.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Coseismic displacements from SAR image offsets between different satellite sensors: Application to the 2001 Bhuj (India) earthquake 2015, 42 (17):7022 Geophysical Research Letters
Publisher:
Wiley-Blackwell
Journal:
Geophysical Research Letters
Issue Date:
5-Sep-2015
DOI:
10.1002/2015GL064585
Type:
Article
ISSN:
00948276
Additional Links:
http://doi.wiley.com/10.1002/2015GL064585
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorWang, Tengen
dc.contributor.authorWei, Shengjien
dc.contributor.authorJonsson, Sigurjonen
dc.date.accessioned2015-11-24T10:48:13Zen
dc.date.available2015-11-24T10:48:13Zen
dc.date.issued2015-09-05en
dc.identifier.citationCoseismic displacements from SAR image offsets between different satellite sensors: Application to the 2001 Bhuj (India) earthquake 2015, 42 (17):7022 Geophysical Research Lettersen
dc.identifier.issn00948276en
dc.identifier.doi10.1002/2015GL064585en
dc.identifier.urihttp://hdl.handle.net/10754/582597en
dc.description.abstractSynthetic aperture radar (SAR) image offset tracking is increasingly being used for measuring ground displacements, e.g., due to earthquakes and landslide movement. However, this technique has been applied only to images acquired by the same or identical satellites. Here we propose a novel approach for determining offsets between images acquired by different satellite sensors, extending the usability of existing SAR image archives. The offsets are measured between two multiimage reflectivity maps obtained from different SAR data sets, which provide significantly better results than with single preevent and postevent images. Application to the 2001 Mw7.6 Bhuj earthquake reveals, for the first time, its near-field deformation using multiple preearthquake ERS and postearthquake Envisat images. The rupture model estimated from these cross-sensor offsets and teleseismic waveforms shows a compact fault slip pattern with fairly short rise times (<3 s) and a large stress drop (20 MPa), explaining the intense shaking observed in the earthquake.en
dc.language.isoenen
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://doi.wiley.com/10.1002/2015GL064585en
dc.rightsArchived with thanks to Geophysical Research Letters. An edited version of this paper was published by AGU. Copyright (2015) American Geophysical Union.en
dc.titleCoseismic displacements from SAR image offsets between different satellite sensors: Application to the 2001 Bhuj (India) earthquakeen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalGeophysical Research Lettersen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionEarth Observatory of Singapore; Nanyang Technological University; Singaporeen
dc.contributor.institutionHuffington Department of Earth Sciences, Southern Methodist University, Dallas, Texas, USAen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorWang, Tengen
kaust.authorJonsson, Sigurjonen
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