DOI: 10.1002/2015GL064585
论文题名: Coseismic displacements from SAR image offsets between different satellite sensors: Application to the 2001 Bhuj (India) earthquake
作者: Wang T. ; Wei S. ; Jõnsson S.
刊名: Geophysical Research Letters
ISSN: 0094-9226
EISSN: 1944-8957
出版年: 2015
卷: 42, 期: 17 起始页码: 7022
结束页码: 7030
语种: 英语
英文关键词: Bhuj earthquake
; joint inversion
; SAR image offsets
; source model
Scopus关键词: Earthquakes
; Fault slips
; Geodetic satellites
; Geophysics
; Image acquisition
; Satellites
; Space-based radar
; Synthetic aperture radar
; Co-seismic displacement
; Ground displacement
; Joint inversion
; Landslide movements
; SAR Images
; Source modeling
; Synthetic aperture radar (SAR) images
; Teleseismic waveforms
; Radar imaging
; aftershock
; coseismic process
; data set
; displacement
; Envisat
; fault slip
; Gujarat earthquake 2001
; image analysis
; landslide
; satellite imagery
; sensor
; synthetic aperture radar
; teleseismic wave
; waveform analysis
英文摘要: 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. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84943338638&doi=10.1002%2f2015GL064585&partnerID=40&md5=ab3998f69e787fe804f9224b7549d18c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8842
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
Recommended Citation:
Wang T.,Wei S.,Jõnsson S.. Coseismic displacements from SAR image offsets between different satellite sensors: Application to the 2001 Bhuj (India) earthquake[J]. Geophysical Research Letters,2015-01-01,42(17).