Accession Number:

ADA021393

Title:

Volume Scattering from Sea Ice and Glacier Snow.

Descriptive Note:

Technical rept.,

Corporate Author:

KANSAS UNIV/CENTER FOR RESEARCH INC LAWRENCE REMOTE SENSING LAB

Personal Author(s):

• Biggs,Albert W.

Report Date:

1970-07-01

Pagination or Media Count:

46.0

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.

Descriptors:

• *ELECTROMAGNETIC SCATTERING
• PHYSICAL PROPERTIES
• BACKSCATTERING
• DIELECTRIC PROPERTIES
• SNOW
• RADAR REFLECTIONS
• MICROWAVE FREQUENCY
• SEA ICE
• GLACIERS
• VERY LOW FREQUENCY
• SIDE LOOKING RADAR
• ARCTIC OCEAN
• SNOWFIELDS

Subject Categories:

• Snow, Ice and Permafrost
• Active and Passive Radar Detection and Equipment
• Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE