Polarimetric Synthetic Aperture Radar Measurements of Snow Covered First-Year Sea Ice

Hossain, Md. Mosharraf

Polarimetric Synthetic Aperture Radar Measurements of Snow Covered First-Year Sea Ice

atmire.migration.oldid	378
dc.contributor.advisor	Yackel, John
dc.contributor.author	Hossain, Md. Mosharraf
dc.date.accessioned	2012-10-01T18:40:37Z
dc.date.available	2012-11-13T08:01:45Z
dc.date.issued	2012-10-01
dc.date.submitted	2012	en
dc.description.abstract	This study examines the utility of fully polarimetric C-and SAR parameters and three-component scattering model to quantify the sensitivity of snow covered first-year sea ice (FYI) to radar incidence angles and surface air temperature (SAT) during the late winter transition. This three-component scattering model is based on surface, double-bounce and volume scattering contributed from various materials and surface properties. RADARSAT-2 C-band fully polarimetric synthetic aperture radar (POLSAR) data is utilized to quantify the sensitivity of thermodynamic effects (-8° C and -0.4° C ) of the polarimetric backscatter signature on mean snow cover thickness ranging from 8 cm to 36 cm with in-situ geophysical data from four different validation sites along with two different radar incidence angles 29° (steep) and 39° (shallow) to discriminate between snow-covered smooth, rough and deformed FYI. The result shows enhanced discrimination at shallower incidence angles compared to steeper ones in both 2-D and 3-D plots. The double-bounce scattering contribution is low for all FYI types at both incidence angles which are attributed to shallower incidence angle as microwave energy being in direct contact with a greater volume of higher dielectric brine coated, enlarged snow grains in the basal layer compared to the steeper incidence angles. The results also show that surface scattering dominates for all three FYI types at both incidence angles and decreases with increasing surface roughness and radar incidence angles whereas opposite results observed for volume scattering mechanisms. The results indicate that higher variation measured for thin snow class ~7 dB for both co- cross-polarization backscatters compared to thick snow class ~1 dB which corroborates with electro-thermodynamic theory.	en_US
dc.identifier.citation	Hossain, M. M. (2012). Polarimetric Synthetic Aperture Radar Measurements of Snow Covered First-Year Sea Ice (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/27377	en_US
dc.identifier.doi	http://dx.doi.org/10.11575/PRISM/27377
dc.identifier.uri	http://hdl.handle.net/11023/252
dc.language.iso	eng
dc.publisher.faculty	Graduate Studies
dc.publisher.institution	University of Calgary	en
dc.publisher.place	Calgary	en
dc.rights	University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subject	Physical Geography
dc.subject	Physical Oceanography
dc.subject	Remote Sensing
dc.subject	Engineering--Marine and Ocean
dc.subject.classification	Remote Sensing	en_US
dc.subject.classification	Physical Geography	en_US
dc.subject.classification	Microwave	en_US
dc.subject.classification	Polarimetric SAR	en_US
dc.subject.classification	Snow Cover	en_US
dc.subject.classification	First-Year Sea Ice	en_US
dc.title	Polarimetric Synthetic Aperture Radar Measurements of Snow Covered First-Year Sea Ice
dc.type	master thesis
thesis.degree.discipline	Geography
thesis.degree.grantor	University of Calgary
thesis.degree.name	Master of Science (MSc)
ucalgary.item.requestcopy	true

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