The dielectric and polarimetric microwave scattering properties of snow covered sea ice
Bibliography: p. 223-235 In this thesis I investigate the dielectric and polarimetric microwave scattering properties of snow-covered sea ice. I present the first measurements of the dielectric constant and the dielectric loss for brine-wetted snow on first-year sea ice. Using these measurements, I...
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| Format: | Doctoral or Postdoctoral Thesis |
| Language: | English |
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University of Calgary
2009
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| Online Access: | http://hdl.handle.net/1880/103581 https://doi.org/10.11575/PRISM/2580 |
| Summary: | Bibliography: p. 223-235 In this thesis I investigate the dielectric and polarimetric microwave scattering properties of snow-covered sea ice. I present the first measurements of the dielectric constant and the dielectric loss for brine-wetted snow on first-year sea ice. Using these measurements, I develop empirical and semi-physical models that relate brine volume fraction and brine saturation in the snow to the dielectric properties at MHz and GHz frequencies. To investigate the polarimetric scattering properties of snow-covered sea ice, I describe the field deployment and signal processing methods for a new surface-based C-band scatterometer. Using observations of in situ microwave scattering signatures, geophysical properties and associated dielectric properties of brine-wetted snow, I describe, model and theorize on the polarimetric microwave scattering properties of snow-covered sea ice. I extend this knowledge of dielectric and scattering properties to regional-scale multipolarized SAR investigations for enhancing the discrimination of sea ice types and open water. |
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