NDLI: Polarimetric signatures of sea ice. part 1; theoretical model

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Polarimetric signatures of sea ice. part 1; theoretical model

Content Provider	NASA Technical Reports Server (NTRS)
Author	Drinkwater, M. R. Nghiem, S. V. Kwok, R. Yueh, S. H.
Copyright Year	1995
Description	Physical, structural, and electromagnetic properties and interrelating processes in sea ice are used to develop a composite model for polarimetric backscattering signatures of sea ice. Physical properties of sea ice constituents such as ice, brine, air, and salt are presented in terms of their effects on electromagnetic wave interactions. Sea ice structure and geometry of scatterers are related to wave propagation, attenuation, and scattering. Temperature and salinity, which are determining factors for the thermodynamic phase distribution in sea ice, are consistently used to derive both effective permittivities and polarimetric scattering coefficients. Polarimetric signatures of sea ice depend on crystal sizes and brine volumes, which are affected by ice growth rates. Desalination by brine expulsion, drainage, or other mechanisms modifies wave penetration and scattering. Sea ice signatures are further complicated by surface conditions such as rough interfaces, hummocks, snow cover, brine skim, or slush layer. Based on the same set of geophysical parameters characterizing sea ice, a composite model is developed to calculate effective permittivities and backscattering covariance matrices at microwave frequencies for interpretation of sea ice polarimetric signatures.
File Size	1457121
Page Count	16
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19970009603
Archival Resource Key	ark:/13960/t8nd0wg1j
Language	English
Publisher Date	1995-07-15
Access Restriction	Open
Subject Keyword	Oceanography Geophysics Electromagnetic Interactions Expulsion Salinity Thermodynamics Slush Surface Properties Snow Cover Polarimetry Signatures Electromagnetic Properties Matrices Mathematics Sea Ice Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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