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TitleSpatio-temporal analysis of ground deformation occurring near Rice Lake, Saskatchewan, and observed by Radarsat-2 DInSAR during 2008-2011
AuthorSamsonov, S; Gonzalez, P J; Tiampo, K; d'Oreye, N
SourceCanadian Journal of Remote Sensing vol. 39, no. 1, 2013 p. 27-33, (Open Access)
Alt SeriesEarth Sciences Sector, Contribution Series 20120075
PublisherInforma UK Limited
Mediapaper; on-line; digital
File formatpdf; html
NTS73B/02; 73B/03
AreaRice Lake; Saskatoon
Lat/Long WENS-107.5000 -106.5000 52.2500 52.0000
Subjectsgeophysics; remote sensing; deformation; analytical methods; Differential Interferometric Synthetic Aperture Radar (DInSAR); interferometric analysis
ProgramRemote Sensing Science, Methodology
Released2014 06 04
AbstractWe present ground deformation maps for the southern Saskatchewan region between Rice Lake and the City of Saskatoon measured by Radarsat-2 Differential Interferometric Synthetic Aperture Radar (DInSAR) during 2008-2011. We acquired and processed Radarsat-2 data from two different tracks (Multi-Look Fine beam and one Standard beam) and performed advanced interferometric analysis that revealed ground deformation with a maximum line-of-sight rate close to 10 cm per year. Decomposition of ascending and descending, line-of-sight images into horizontal (mainly east-west) and vertical components revealed the presence of localized horizontal motion with a maximum absolute rate of 4 cm per year and subsidence with a maximum rate of -10 cm per year. These results suggested that simple line-of-sight time series analysis of interferometric data acquired in single geometry is insufficient for capturing a complete pattern of
ground deformation and can be misleading in the presence of both horizontal and vertical components of deformation.