Accession Number : ADA298898

Title :   Ice Thickness Distribution.

Descriptive Note : Final rept. 1 Sep 87-30 Sep 89,

Corporate Author : WASHINGTON UNIV SEATTLE POLAR SCIENCE CENTER

Personal Author(s) : Untersteiner, Norbert ; Moritz, Richard E.

PDF Url : ADA298898

Report Date : 30 SEP 1989

Pagination or Media Count : 22

Abstract : Prototype Upward Looking Sonar (ULS) instruments that monitor time series of ice draft from oceanographic moorings have been designed, built, tested and deployed in arctic waters. The measured time series recovered from these instruments reveal many geophysically significant, quantitative aspects of the sea ice draft distribution that have not been measured or documented previously. The utility of the basic concept, and the soundness of the ULS Mark-1 design are confirmed by the data. Tests in the laboratory and in the field suggest opportunities for modest design changes that would improve the performance of the ULS. Proposed further work includes implementation of design modifications, detailed analysis of the ULS time series, redeployment of the prototype units, and construction and deployment of three new ULS units,

Descriptors :   *SONAR, *SEA ICE, *UNDERSEA SURVEILLANCE, THICKNESS, DISTRIBUTION, TIME SERIES ANALYSIS, PROTOTYPES, ARCTIC REGIONS, MOORING, OCEANOGRAPHIC EQUIPMENT.

Subject Categories : Physical and Dynamic Oceanography
      Snow, Ice and Permafrost
      Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE