Earth and rock-filled dam monitoring by high-resolution X-band interferometry: Gongming dam case study

Show simple item record

dc.identifier.uri http://dx.doi.org/10.15488/4527
dc.identifier.uri https://www.repo.uni-hannover.de/handle/123456789/4569
dc.contributor.author Li, Tao
dc.contributor.author Motagh, Mahdi
dc.contributor.author Wang, Mingzhou
dc.contributor.author Zhang, Wei
dc.contributor.author Gong, Chunlong
dc.contributor.author Xiong, Xunan
dc.contributor.author He, Jinping
dc.contributor.author Chen, Lulu
dc.contributor.author Liu, Jingnan
dc.date.accessioned 2019-03-08T10:25:27Z
dc.date.available 2019-03-08T10:25:27Z
dc.date.issued 2019
dc.identifier.citation Li, T.; Motagh, M.; Wang, M.; Zhang, W.; Gong, C. et al.: Earth and rock-filled dam monitoring by high-resolution X-band interferometry: Gongming dam case study. In: Remote Sensing 11 (2019), Nr. 3, 246. DOI: https://doi.org/10.3390/rs11030246
dc.description.abstract Middle-sized earth- and rock-filled dams with clay cores continue to settle by approximately 0.5-1.5% of their height for approximately 1-3 years after their construction phase. This paper investigates the use of high-resolution spaceborne Synthetic aperture Radar (SAR) interferometry to monitor this settlement process, with the case of the Gongming dam in China. The varieties of slope foreshortening and stretching in the radar coordinates are attributed to the radar's local incidence angle and the dam's slope heading, which are analysed in detail. Focusing on the embankment slope settlement analysis, the equations for calculating foreshortening and the line-of-sight deformation decomposition are derived in detail for the adjustment and data fusing. The scattering characteristics of different materials on the dam surface are analysed, including the grass slope, concrete slope, top road (crest), top wall, step, and ditch. According to the analysis of the precipitation data from a local meteorological station, the coherence losses on the slopes are mainly caused by surface moisture. Both the TerraSAR-X Spotlight (TSX-SL) data and the COSMO-SkyMed Strip Mode (CSK-SM) data are analysed by the stacking method to assess the slopes' deformations. The TSX-SL data results show the highest rate of settlement as 2 cm/yr on the top of the dam slope, consistent with the clay core shrinking process. The CSK-SM data show a similar trend in the lower part of the dam slope but underestimate the deformation in the upper part of the slope. eng
dc.language.iso eng
dc.publisher Basel : MDPI AG
dc.relation.ispartofseries Remote Sensing 11 (2019), Nr. 3
dc.rights CC BY 4.0 Unported
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.subject Correlation eng
dc.subject Earth- and rock-fill dam eng
dc.subject Hydraulic structural design eng
dc.subject InSAR eng
dc.subject Spotlight eng
dc.subject TerraSAR-X eng
dc.subject Correlation methods eng
dc.subject Deformation eng
dc.subject Interferometry eng
dc.subject Satellites eng
dc.subject Structural design eng
dc.subject Synthetic aperture radar eng
dc.subject Earth and rock-fill dam eng
dc.subject InSAR eng
dc.subject Meteorological station eng
dc.subject Scattering char-acteristics eng
dc.subject Settlement analysis eng
dc.subject Spaceborne synthetic aperture radars eng
dc.subject Spotlight eng
dc.subject TerraSAR-X eng
dc.subject Dams eng
dc.subject.ddc 620 | Ingenieurwissenschaften und Maschinenbau ger
dc.title Earth and rock-filled dam monitoring by high-resolution X-band interferometry: Gongming dam case study
dc.type Article
dc.type Text
dc.relation.issn 2072-4292
dc.relation.doi https://doi.org/10.3390/rs11030246
dc.bibliographicCitation.issue 3
dc.bibliographicCitation.volume 11
dc.bibliographicCitation.firstPage 246
dc.description.version publishedVersion
tib.accessRights frei zug�nglich


Files in this item

This item appears in the following Collection(s):

Show simple item record

 

Search the repository


Browse

My Account

Usage Statistics