Accession Number : AD0815817

Title :   ALUMINAUT MAGNETOMETER OPERATIONS ST. CROIX, VIRGIN ISLANDS, 1966.

Descriptive Note : Informal rept.,

Corporate Author : NAVAL OCEANOGRAPHIC OFFICE NSTL STATION MS

Personal Author(s) : Higgs, Robert H. ; Carroll, Jerry C.

Report Date : MAR 1967

Pagination or Media Count : 28

Abstract : The Naval Oceanographic Office demonstrated the practicality of conducting geomagnetic surveys from deep diving submarines during operations aboard Reynolds Aluminum Company's ALUMINAUT near St. Croix, Virgin Islands, in October 1966. A standard Varian Associates V-4937 proton magnetometer was used to make + or - 1 gamma relative magnetic intensity measurements at depths down to 3400 feet during three days of successful operations. Placing the magnetometer sensor (modified for deep water operation) 8 feet in front of ALUMINAUT on an aluminum boom minimized the effects of the submarine's magnetic field on the survey measurements. Data analysis reveals that errors caused by the remaining submarine's field at the sensor are small and easily correctable. Although ALUMINAUT is unique because of its aluminum construction, other types of deep research vehicles could be used to collect useful geomagnetic data by employing similar instrumentation and survey techniques. (Author)

Descriptors :   *UNDERWATER VEHICLES), (*MAGNETOMETERS, VIRGIN ISLANDS, GEOMAGNETISM, DEEP SUBMERGENCE, DEEP WATER, FEASIBILITY STUDIES, ALUMINUM ALLOYS, BOOMS(EQUIPMENT), ACCURACY, HARMONIC ANALYSIS.

Subject Categories : Geomagnetism
      Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE