Accession Number : AD0680908

Title :   DEEPLY-TOWED ECHO-SOUNDER RECONNAISSANCE OF A FLEET TACTICAL RANGE SITE,

Corporate Author : SCRIPPS INSTITUTION OF OCEANOGRAPHY SAN DIEGO CALIF MARINE PHYSICAL LAB

Personal Author(s) : Loughridge,Michael S. ; Spiess,Fred N.

Report Date : 26 NOV 1968

Pagination or Media Count : 15

Abstract : A deeply-towed echo-sounder reconnaissance west of the island of Kauai was accomplished in connection with site studies for a Fleet Tactical Range. Detailed knowledge of the fine-scale topography and bottom slopes was considered desirable in planning underwater installations and evaluating the expected performance of sonars to be used in the area. The capabilities of the Marine Physical Laboratory Deeply-Towed Echo-Sounder system were employed to obtain some of the desired information. Data are presented which reveal significant details of one major topographic scarp trending across proposed cable runs; however, the relative smoothness of other portions of proposed cable runs is precisely established by other data. The data are particularly well suited to an analysis of bottom slope for the purpose of evaluating the performance that can be expected in the area when sonars are used in the bottom-bounce mode. An analysis of the bottom slopes and estimates of expected fire control performance of bottom-bounce sonars are presented. (Author)

Descriptors :   (*SONAR, *ACOUSTIC RANGES), (*TOWED SONAR, *HYDROGRAPHIC SONAR), (*HYDROGRAPHIC SURVEYING, TOWED SONAR), OCEAN BOTTOM TOPOGRAPHY, ELECTRIC CABLES, RADAR NAVIGATION, HAWAII

Subject Categories : Physical and Dynamic Oceanography
      Test Facilities, Equipment and Methods
      Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE