AUTOMATIC PROCESSING OF ARCTIC PACK ICE DATA OBTAINED BY MEANS OF SUBMARINE SONAR AND OTHER REMOTE SENSING TECHNIQUES
Automatic processing and analysis of three types of remote sensing data of arctic pack ice are described. The primary emphasis is on upward-looking sonar profiles of the underside of pack ice obtained during the winter 1960 arctic cruise of the SSN 583, SARGO. Two traverses, one in the Chukchi Sea and one in the Beaufort Sea were studied. Segments of the profiles were analyzed by power spectrum and frequency distribution of amplitude techniques. Power spectrum analysis indicated preferred spacing of pressure ridges with apparent periods of 20-25, 35-40 and 80-100 m. Comparison of the power spectra of two profiles intersecting at a right angle showed the expected spatial period shift of significant ice ridge ensembles and so suggests a potential real-time technique for determining, from submarines cruising submerged, ice ridge orientation. (Author)
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Supplemental Notes:
- Technical rept 1 Dec 69-15 Sep 70
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Corporate Authors:
Development and Resources Transportation Company
1111 University Boulevard, West
Silver Spring, MD United States 20902 -
Authors:
- Le Shack, Leonard A
- Hibler, William D
- Morse, Frederick H
- Publication Date: 1970-8
Media Info
- Pagination: 57 p.
Subject/Index Terms
- TRT Terms: Ice; Ice formations; Motion; Pack ice; Power; Power spectra; Remote sensing; Sea ice; Spectrum analysis; Thickness
- Geographic Terms: Arctic Regions
- Old TRIS Terms: Ice movement; Ice ridge orientation; Ice thickness
- Subject Areas: Energy; Marine Transportation;
Filing Info
- Accession Number: 00015278
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: D/RT-5
- Contract Numbers: N00014-70-C-0110
- Files: TRIS
- Created Date: May 13 1971 12:00AM