Call number:
ZSP-201-80/20
In:
CRREL Report, 80-20
Description / Table of Contents:
Results of impulse radar studies of sea ice give support to the concept of a sea ice model in which the ice bottom is composed of an array of lossy parallel plate waveguides. The fundametal relation between the average bulk brine volume of sea ice and its electrical and strength properties is discussed as is the remote detection of under-ice current
alignment. It was found that
1) the average effective bulk dielectric constant is dependent upon the average bulk brine volume of the sea ice;
2) sea ice anisotropy, arising from a bottom structure of crystal platelets with a preferred c-axis horizontal alignment, can be detected by radio echo sounding measurements made not only on the ice surface but also from an airborne platform;
3) the effective coefficient of reflection from the seaiIce bottom decreases with increasing average effective bulk dielectric constant of the ice, decreases with increasing bulk brine volume, and is typically one to two orders of magnitude lower dhan the coefficient of reflection from the ice surface;
and 4) the losses In sea ice increase with increasing average bulk brine volume.
Type of Medium:
Series available for loan
Pages:
v, 18 Seiten
,
Illustrationen
Series Statement:
CRREL Report 80-24
URL:
https://apps.dtic.mil/dtic/tr/fulltext/u2/a092089.pdf
Language:
English
Note:
CONTENTS
Abstract
Preface
Introduction
Field program
Results and discussion
Conclusions
Literature cited
Appendix: Data analysis procedures
Location:
AWI Archive
Branch Library:
AWI Library
