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Article: Ground subsidence observation of solid waste landfill park using multi-temporal radar interferometry

TitleGround subsidence observation of solid waste landfill park using multi-temporal radar interferometry
Authors
Keywordsground subsidence
SAR interferometry (InSAR)
multi-temporal SAR interferometry (MTInSAR)
landfill
interferometric coherence
Synthetic aperture radar (SAR)
Issue Date2018
Citation
International Journal of Urban Sciences, 2018, p. 1-16 How to Cite?
Abstract© 2018 The Institute of Urban Sciences Land subsidence on landfill parks needs to be consistently and periodically measured because the landfill areas tend to subside unexpectedly. Although in-situ measurements have been adopted in general, these have a number of limitations of spatial and temporal resolutions because of the high cost. However, the use of interferometric synthetic aperture radar (InSAR) can overcome these disadvantages. In this study, we carried out two experiments using the InSAR method. We then compared the interferometric coherence between ALOS PALSAR and TerraSAR-X data and measured the ground subsidence using multi-temporal TerraSAR-X data acquired from ascending and descending paths. The mean coherences from the ALOS PALSAR and TerraSAR-X interferograms were 0.26 and 0.54, respectively. The coherence from TerraSAR-X was nearly 2 times higher than that of ALOS PALSAR, despite its shorter wavelength of radar signal. These results showed that the data with the shorter temporal baseline is appropriate to monitor the ground subsidence on landfill park areas. As a result of measuring surface deformation, the mean line-of-sight (LOS) deformation rates estimated from the small baseline subset (SBAS) method were −2.4 and −3.2 cm/year for the ascending and descending data of TerraSAR-X, respectively. Also, the mean deformation rate in the vertical and east–west directions were −5.7 and −1.7 cm/year, respectively. The root mean square error (RMSE) of InSAR measurements by comparing with the in-situ measurements was about 1.2 cm/year and the coefficient of determination ((Formula presented.)) was about 0.97. These results indicated good agreements between the InSAR measurements and the in-situ measurements.
Persistent Identifierhttp://hdl.handle.net/10722/267089
ISSN
2015 SCImago Journal Rankings: 0.302

 

DC FieldValueLanguage
dc.contributor.authorBaek, Won Kyung-
dc.contributor.authorJung, Hyung Sup-
dc.contributor.authorJo, Min Jeong-
dc.contributor.authorLee, Won Jin-
dc.contributor.authorZhang, Lei-
dc.date.accessioned2019-01-31T07:20:29Z-
dc.date.available2019-01-31T07:20:29Z-
dc.date.issued2018-
dc.identifier.citationInternational Journal of Urban Sciences, 2018, p. 1-16-
dc.identifier.issn1226-5934-
dc.identifier.urihttp://hdl.handle.net/10722/267089-
dc.description.abstract© 2018 The Institute of Urban Sciences Land subsidence on landfill parks needs to be consistently and periodically measured because the landfill areas tend to subside unexpectedly. Although in-situ measurements have been adopted in general, these have a number of limitations of spatial and temporal resolutions because of the high cost. However, the use of interferometric synthetic aperture radar (InSAR) can overcome these disadvantages. In this study, we carried out two experiments using the InSAR method. We then compared the interferometric coherence between ALOS PALSAR and TerraSAR-X data and measured the ground subsidence using multi-temporal TerraSAR-X data acquired from ascending and descending paths. The mean coherences from the ALOS PALSAR and TerraSAR-X interferograms were 0.26 and 0.54, respectively. The coherence from TerraSAR-X was nearly 2 times higher than that of ALOS PALSAR, despite its shorter wavelength of radar signal. These results showed that the data with the shorter temporal baseline is appropriate to monitor the ground subsidence on landfill park areas. As a result of measuring surface deformation, the mean line-of-sight (LOS) deformation rates estimated from the small baseline subset (SBAS) method were −2.4 and −3.2 cm/year for the ascending and descending data of TerraSAR-X, respectively. Also, the mean deformation rate in the vertical and east–west directions were −5.7 and −1.7 cm/year, respectively. The root mean square error (RMSE) of InSAR measurements by comparing with the in-situ measurements was about 1.2 cm/year and the coefficient of determination ((Formula presented.)) was about 0.97. These results indicated good agreements between the InSAR measurements and the in-situ measurements.-
dc.languageeng-
dc.relation.ispartofInternational Journal of Urban Sciences-
dc.subjectground subsidence-
dc.subjectSAR interferometry (InSAR)-
dc.subjectmulti-temporal SAR interferometry (MTInSAR)-
dc.subjectlandfill-
dc.subjectinterferometric coherence-
dc.subjectSynthetic aperture radar (SAR)-
dc.titleGround subsidence observation of solid waste landfill park using multi-temporal radar interferometry-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1080/12265934.2018.1468275-
dc.identifier.scopuseid_2-s2.0-85046641439-
dc.identifier.spage1-
dc.identifier.epage16-
dc.identifier.eissn2161-6779-

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