TU1.L10 - ERS-ENVISAT TANDEM CROSS-INTERFEROMETRY FOR MONITORING OF SEA ICE
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TU1.L10 - ERS-ENVISAT TANDEM CROSS-INTERFEROMETRY FOR MONITORING OF SEA ICE

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  • 21/07/09
  • 21/07/09
  • 21/07/09
  • 21/07/09
  • 21/07/09

TU1.L10 - ERS-ENVISAT TANDEM CROSS-INTERFEROMETRY FOR MONITORING OF SEA ICE TU1.L10 - ERS-ENVISAT TANDEM CROSS-INTERFEROMETRY FOR MONITORING OF SEA ICE Presentation Transcript

  • ERS-ENVISAT TANDEM CROSS-INTERFEROMETRY FOR MONITORING OF SEA ICE P. Pasquali(1), A. Cantone(1), M. Barbieri(1), and M. Engdahl(2) (1) sarmap s.a., Cascine di Barico, 6989 Purasca, Switzerland (2) ESA ESRIN, , Frascati, Italy
  • ERS-ASAR Cross-Interferometry (CinSAR)
    • Very large baseline (~2km) to compensate the carrier frequencies shift
    • -> Very sensitive to height (2pi ~5m)
    • -> Coherence maintained for little slopes
    • Short acquisition interval (~30 minutes)
  • CInSAR processing results over glaciers Glaciers in east Greenland, Mount Gunnbjørn area
  • Use of existing DEMs over Antarctica Ramp GLAS/ICESat Ellipsoid
  • Use of existing DEMs over Antarctica Aster GDEM GTOPO-30 Ellipsoid
  • EET 2 nd campaign coverage over northern latitudes
  • Baffin area Flattened interferogram ASAR Amplitude
  • Grounded ice border? North-west passage, Northern Canada January 4 th January 7 th January 10 th
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  • Beaufort area
  • Coregistering land or ice? ASAR amplitude ERS-2 / ASAR phase
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  • Edges of homogeneous fringe frequency areas
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  • Estimation of the displacement azimuth component ERS-2 / ASAR interferogram “ MAI” (Multi Aperture Interferogram) D. Bechor and H. A. Zebker, 2006, Measuring two-dimensional movements using a single InSAR pair, Geophys. Res. Lett.
  • Estimation of the displacement azimuth component
  • “ MAI” (Multi Aperture Interferogram) ERS-2 / ASAR interferogram
  • First results from EET 3 rd campaign over Antarctica
  • Conclusions
    • EET CInSAR data have a great potential for monitoring sea ice dynamic
    • In case of large displacements, 2D components can be estimated from the data, with updated MAI strategies
    • Updated strategies for coregistration shall be exploited
    • Long segments processing is of great importance