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DOI	10.1016/j.rse.2020.111910
	Observations of SAR polarimetric parameters of lake and fast sea ice during the early growth phase
	Shokr M.; Dabboor M.
发表日期	2020
ISSN	00344257
卷号	247
英文摘要	This study examines links between two sets of parameters obtained from Radarsat-2 Quad-pol data and geophysical information of lake ice and landfast sea ice in the Resolute Bay area, Nunavut, Canada. The first set includes the three orthogonal backscatter coefficients (σhh0, σvv0, σvh0) in addition to the total backscatter power (SPAN). The second set includes polarimetric decomposition parameters obtained using Cloude-Pottier and Yamaguchi decomposition methods. Data were collected during the early freezing period from 20 September until 28 December 2017. Meteorological and ice climatological data from the weather station of Resolute Bay were used to facilitate this task. Ice thickness and salinity were obtained from established empirical models. Results show that single-bounce and multiple-bounce scattering mechanisms are active in lake ice during the entire freezing period while multiple-bounce scattering is active in sea ice only during the initial freezing. Backscatter parameters can be used to determine the thickness of lake ice up to any depth, while both backscatter and the tested decomposition parameters are related to the thickness of young sea ice (<30 cm thick). Physical explanations are offered in each case. Spatial maps of ice thickness are produced. Polarimetric decomposition parameters demonstrate erratic behavior throughout the development of lake ice. High entropy (>0.6) is found to be associated with comparable single- and multiple-bounce scattering mechanisms, hence can be used to identify new ice. Orthogonal backscatter coefficients and polarimetric decomposition parameters provide different information, yet their combination offers clues to better identify ice conditions and investigate questions about scattering mechanisms. © 2020
英文关键词	Fast sea ice; Ice thickness; Lake ice; Quad-pol SAR; Salinity
语种	英语
scopus关键词	Backscattering; Freezing; Polarimeters; Sea ice; Synthetic aperture radar; Backscatter coefficients; Climatological data; Geophysical information; Polarimetric decomposition; Polarimetric parameters; Scattering mechanisms; Weather stations; Yamaguchi decompositions; Lakes; backscatter; decomposition analysis; empirical analysis; freezing; ice thickness; lake water; observational method; parameterization; RADARSAT; salinity; sea ice; synthetic aperture radar; weather station; Canada; Cornwallis Island; Nunavut; Queen Elizabeth Islands; Resolute Bay
来源期刊	Remote Sensing of Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/179218
作者单位	Science and Technology Branch, Environment and Climate Change Canada, Government of Canada, Toronto, ON M3H 5T4, Canada; Science and Technology Branch, Environment and Climate Change Canada, Government of Canada, Dorval, QC H9P 1J3, Canada
推荐引用方式 GB/T 7714	Shokr M.,Dabboor M.. Observations of SAR polarimetric parameters of lake and fast sea ice during the early growth phase[J],2020,247.
APA	Shokr M.,&Dabboor M..(2020).Observations of SAR polarimetric parameters of lake and fast sea ice during the early growth phase.Remote Sensing of Environment,247.
MLA	Shokr M.,et al."Observations of SAR polarimetric parameters of lake and fast sea ice during the early growth phase".Remote Sensing of Environment 247(2020).