RESEARCH COMMONS
LIBRARY

Determination of volume and surface scattering from saline ice using ice sheets with precisely controlled roughness parameters

ResearchCommons/Manakin Repository

Determination of volume and surface scattering from saline ice using ice sheets with precisely controlled roughness parameters

Show full item record

Title: Determination of volume and surface scattering from saline ice using ice sheets with precisely controlled roughness parameters
Author: Porco, Ronald L.; Fung, Adrian K.; Tjuatja, Saibun; Jezek, Kenneth C.; Gogineni, Sivaprasad P.; Gow, Anthony J.; Bredow, Jonathan W.
Abstract: Experiments were performed at the U.S. Army Cold Regions Research and Engineering Laboratory (CRREL) in Hanover, NH, to precisely determine the relative contributions of surface and volume scattering from saline ice that has well-known surface roughness characteristics. The ice growth phase of the experiment made use of two 6-ft diameter tanks and a 6-ft diameter mold with known roughness sattistical parameters of rms height=0.25 cm and Gaussian correlation (correlation length=2.0 cm). One tank was used for growing a moderately thick saline ice sheet with very smooth surface, and the other was used for growing a thin layer of freshwater ice over the surface mold. The latter resulted in a layer with one statistically known rough boundary and one smooth boundary. Wide-bandwidth, multiple incidence angle backscattering measurements were performed, first on the bare saline ice sheet and then on the same sheet after the thin freshwater ice sheet was placed on top of it. Results indicate that the surface scattering dominates over saline ice volume scattering at all frequencies for low incidence angels for both the very smooth and Gaussian rough surfaces. The significance of volume scattering depends strongly on angle of incidence, frequency, volume scattering albedo, surface roughness, and surface correlation function.
URI: http://hdl.handle.net/10106/4979
Date: 1995-09

Files in this item

Files Size Format View Description
DeterminationofVolumeandSurfaceScattering.pdf 951.3Kb PDF View/Open PDF
IEEEpublisherAgmt.pdf 82.33Kb PDF View/Open License

This item appears in the following Collection(s)

Show full item record

Browse

My Account

Statistics

About Us