Coseismic slip inversion based on InSAR arc measurements
We present a new method for inverting coseismic slip distribution based on arc measurements of InSAR interferograms. The method only solves the integer ambiguities on the selected arcs so that the challenging task from global unwrapping of low coherence interferograms can be avoided. The simulated e...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2014-03-01
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| Series: | Natural Hazards and Earth System Sciences |
| Online Access: | http://www.nat-hazards-earth-syst-sci.net/14/649/2014/nhess-14-649-2014.pdf |
| _version_ | 1818317122558754816 |
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| author | C. Wang X. Ding Q. Li |
| author_facet | C. Wang X. Ding Q. Li |
| author_sort | C. Wang |
| collection | DOAJ |
| description | We present a new method for
inverting coseismic slip distribution based on arc measurements of InSAR
interferograms. The method only solves the integer ambiguities on the
selected arcs so that the challenging task from global unwrapping of low
coherence interferograms can be avoided. The simulated experiment results
show that the new method recovered the given slip distribution well at
different coherence quality levels. However, the conventional method with
global interferogram unwrapping fails when the interferogram has some
isolated areas. In addition, the new method is capable of using surface
rupture offset data gathered in the field. We apply the proposed method to
study the 2010 Yushu, China Ms 7.1 earthquake. Inclusion of field data can
help to enhance the results of fault slip inversion. It derives a maximum
slip of ∼3 m, larger than the published coseismic slip results on
this event, but agreeing with the largest offset of 3.2 m from field
investigation. |
| first_indexed | 2024-12-13T09:32:18Z |
| format | Article |
| id | doaj.art-092923fb10e14ad59861f1727184c582 |
| institution | Directory Open Access Journal |
| issn | 1561-8633 1684-9981 |
| language | English |
| last_indexed | 2024-12-13T09:32:18Z |
| publishDate | 2014-03-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Natural Hazards and Earth System Sciences |
| spelling | doaj.art-092923fb10e14ad59861f1727184c5822022-12-21T23:52:28ZengCopernicus PublicationsNatural Hazards and Earth System Sciences1561-86331684-99812014-03-0114364965610.5194/nhess-14-649-2014Coseismic slip inversion based on InSAR arc measurementsC. Wang0X. Ding1Q. Li2Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, ChinaDepartment of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, ChinaShenzhen Key Laboratory of Spatial Information Smart Sensing and Services, Shenzhen University, Shenzhen, Guangdong, ChinaWe present a new method for inverting coseismic slip distribution based on arc measurements of InSAR interferograms. The method only solves the integer ambiguities on the selected arcs so that the challenging task from global unwrapping of low coherence interferograms can be avoided. The simulated experiment results show that the new method recovered the given slip distribution well at different coherence quality levels. However, the conventional method with global interferogram unwrapping fails when the interferogram has some isolated areas. In addition, the new method is capable of using surface rupture offset data gathered in the field. We apply the proposed method to study the 2010 Yushu, China Ms 7.1 earthquake. Inclusion of field data can help to enhance the results of fault slip inversion. It derives a maximum slip of ∼3 m, larger than the published coseismic slip results on this event, but agreeing with the largest offset of 3.2 m from field investigation.http://www.nat-hazards-earth-syst-sci.net/14/649/2014/nhess-14-649-2014.pdf |
| spellingShingle | C. Wang X. Ding Q. Li Coseismic slip inversion based on InSAR arc measurements Natural Hazards and Earth System Sciences |
| title | Coseismic slip inversion based on InSAR arc measurements |
| title_full | Coseismic slip inversion based on InSAR arc measurements |
| title_fullStr | Coseismic slip inversion based on InSAR arc measurements |
| title_full_unstemmed | Coseismic slip inversion based on InSAR arc measurements |
| title_short | Coseismic slip inversion based on InSAR arc measurements |
| title_sort | coseismic slip inversion based on insar arc measurements |
| url | http://www.nat-hazards-earth-syst-sci.net/14/649/2014/nhess-14-649-2014.pdf |
| work_keys_str_mv | AT cwang coseismicslipinversionbasedoninsararcmeasurements AT xding coseismicslipinversionbasedoninsararcmeasurements AT qli coseismicslipinversionbasedoninsararcmeasurements |