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TitleValidation of alpine glacier velocity measurements using ERS Tandem-Mission SAR data
AuthorMattar, K E; Vachon, P W; Geudtner, D; Gray, A L; Cumming, I G; Brugman, M
SourceIEEE Transactions on Geoscience and Remote Sensing (Institute of Electrical and Electronics Engineers) vol. 36, 3, 1998., https://doi.org/10.1109/36.673688
Year1998
Alt SeriesEarth Sciences Sector, Contribution Series 20042209
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf
ProvinceBritish Columbia; Alberta
AreaRocky Mountains
SubjectsScience and Technology; remote sensing; radar methods; radar imagery; satellites; glacier surveys; glaciers; ice flow; flow rates; digital terrain modelling; Synthetic Aperture Radar ; interferometry
AbstractFive ascending and four descending ERS-1/2 tendem mode Synthetic Aperture (SAR) Interferometry (InSAR) data pairs with useful scene coherence are used to measure the surface flow field of an alpine glacier in the Canadian Rocky Mountains. The topographic component of the interferogram phase is calculated using a digital elevation model (DEM) of the terrain and precise orbit data to reconstruct the ERS InSAR imaging geometry. The DEM is derived from the CCRS Convair-580 airborne SAR interferometer. As dual line-of-sight (LOS) measurements are not sufficient to completely resolve the 3-dimensional surface flow field, several different assumptions for determining the missing variables are considered, and the 3-dimensional surface flow field, several different assumptions for determining the missing variables are considered and the 3-dimensional surface flow field is estimated using single and dual LOS measurements. The InSAR results agree well with historic and co-incident displacement measurements made using traditional point surveying techniques.
GEOSCAN ID219011