Volume Scattering from Sea Ice and Glacier Snow.

Abstract

This presentation considers volume scattering from Arctic sea ice and Cascade Mountain snow fields. Physical properties of sea ice and dielectric properties of glacier snow are described in terms of dielectric mixtures and the relaxation spectra of water at microwave frequencies. The VLF spectrum is included to illustrate analogous relaxation for ice. Scattering models are brine pockets in sea ice and ice spheroids in snow fields. Radar backscatter measurements of sea ice and SLAR images of snow fields are interpreted with these models. Simulation of sea ice in an acoustic tank demonstrates volume and surface scattering with good qualitative results. The dielectric relaxation phenomena in water at microwave frequencies is also interpreted as a mechanism for anomalous behavior.

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1970
Accession Number
ADA021393

Entities

People

  • Albert W. Biggs

Tags

DTIC Thesaurus Topics

  • Backscattering
  • Dielectric Properties
  • Frequency
  • Ice
  • Microwave Frequency
  • Microwaves
  • Physical Properties
  • Scattering
  • Sea Ice
  • Spectra
  • Water

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Molecular Photonics/Laser Physics
  • Polar and Arctic Studies