File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Mapping ground surface deformation using temporarily coherent point SAR interferometry: Application to Los Angeles Basin

TitleMapping ground surface deformation using temporarily coherent point SAR interferometry: Application to Los Angeles Basin
Authors
KeywordsPhase unwrapping
Interferometric SAR (InSAR)
Coregistration
Phase ambiguity
Synthetic aperture radar (SAR)
Least squares
Subsidence
Issue Date2012
Citation
Remote Sensing of Environment, 2012, v. 117, p. 429-439 How to Cite?
AbstractMulti-temporal interferometric synthetic aperture radar (InSAR) is an effective tool to detect long-term seismotectonic motions by reducing the atmospheric artifacts, thereby providing more precise deformation signal. The commonly used approaches such as persistent scatterer InSAR (PSInSAR) and small baseline subset (SBAS) algorithms need to resolve the phase ambiguities in interferogram stacks either by searching a predefined solution space or by sparse phase unwrapping methods; however the efficiency and the success of phase unwrapping cannot be guaranteed. We present here an alternative approach - temporarily coherent point (TCP) InSAR (TCPInSAR) - to estimate the long term deformation rate without the need of phase unwrapping. The proposed approach has a series of innovations including TCP identification, TCP network and TCP least squares estimator. We apply the proposed method to the Los Angeles Basin in southern California where structurally active faults are believed capable of generating damaging earthquakes. The analysis is based on 55 interferograms from 32 ERS-1/2 images acquired during Oct. 1995 and Dec. 2000. To evaluate the performance of TCPInSAR on a small set of observations, a test with half of interferometric pairs is also performed. The retrieved TCPInSAR measurements have been validated by a comparison with GPS observations from Southern California Integrated GPS Network. Our result presents a similar deformation pattern as shown in past InSAR studies but with a smaller average standard deviation (4.6. mm) compared with GPS observations, indicating that TCPInSAR is a promising alternative for efficiently mapping ground deformation even from a relatively smaller set of interferograms. © 2011.
Persistent Identifierhttp://hdl.handle.net/10722/266927
ISSN
2017 Impact Factor: 6.457
2015 SCImago Journal Rankings: 3.369
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhang, Lei-
dc.contributor.authorLu, Zhong-
dc.contributor.authorDing, Xiaoli-
dc.contributor.authorJung, Hyung Sup-
dc.contributor.authorFeng, Guangcai-
dc.contributor.authorLee, Chang Wook-
dc.date.accessioned2019-01-31T07:20:00Z-
dc.date.available2019-01-31T07:20:00Z-
dc.date.issued2012-
dc.identifier.citationRemote Sensing of Environment, 2012, v. 117, p. 429-439-
dc.identifier.issn0034-4257-
dc.identifier.urihttp://hdl.handle.net/10722/266927-
dc.description.abstractMulti-temporal interferometric synthetic aperture radar (InSAR) is an effective tool to detect long-term seismotectonic motions by reducing the atmospheric artifacts, thereby providing more precise deformation signal. The commonly used approaches such as persistent scatterer InSAR (PSInSAR) and small baseline subset (SBAS) algorithms need to resolve the phase ambiguities in interferogram stacks either by searching a predefined solution space or by sparse phase unwrapping methods; however the efficiency and the success of phase unwrapping cannot be guaranteed. We present here an alternative approach - temporarily coherent point (TCP) InSAR (TCPInSAR) - to estimate the long term deformation rate without the need of phase unwrapping. The proposed approach has a series of innovations including TCP identification, TCP network and TCP least squares estimator. We apply the proposed method to the Los Angeles Basin in southern California where structurally active faults are believed capable of generating damaging earthquakes. The analysis is based on 55 interferograms from 32 ERS-1/2 images acquired during Oct. 1995 and Dec. 2000. To evaluate the performance of TCPInSAR on a small set of observations, a test with half of interferometric pairs is also performed. The retrieved TCPInSAR measurements have been validated by a comparison with GPS observations from Southern California Integrated GPS Network. Our result presents a similar deformation pattern as shown in past InSAR studies but with a smaller average standard deviation (4.6. mm) compared with GPS observations, indicating that TCPInSAR is a promising alternative for efficiently mapping ground deformation even from a relatively smaller set of interferograms. © 2011.-
dc.languageeng-
dc.relation.ispartofRemote Sensing of Environment-
dc.subjectPhase unwrapping-
dc.subjectInterferometric SAR (InSAR)-
dc.subjectCoregistration-
dc.subjectPhase ambiguity-
dc.subjectSynthetic aperture radar (SAR)-
dc.subjectLeast squares-
dc.subjectSubsidence-
dc.titleMapping ground surface deformation using temporarily coherent point SAR interferometry: Application to Los Angeles Basin-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.rse.2011.10.020-
dc.identifier.scopuseid_2-s2.0-84855455213-
dc.identifier.volume117-
dc.identifier.spage429-
dc.identifier.epage439-
dc.identifier.isiWOS:000300459300036-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats