Accession Number : AD0291790

Title :   MEASUREMENTS OF THERMAL STRUCTURE OFF SOUTHERN CALIFORNIA WITH THE NEL THERMISTOR CHAIN

Corporate Author : NAVY ELECTRONICS LAB SAN DIEGO CALIF

Personal Author(s) : LAFOND,E.C. ; MOORE,A.T.

Report Date : 28 AUG 1962

Pagination or Media Count : 1

Abstract : Identi iers: Isotherms. Ocean graphic factors pertinent to the behavi r of underwater sound and to surface and subsurface navigati n ere investigated. The average slopes, autocorrelation, and power spectra of the isotherms obtained with the NEL thermistor chain on the different legs of a deep-water cruise show that many internal aves are of very long peri . The spectra appear to be continuous AT VERY LOW FREQUENCIES AND TO POSSESS MINOR PEAKS AT HIGHER FREQUENCIES. The records of circular tows with the chain establi h that the thermal structure is complex. Although the circular paths followed were too mall t clearly de n trate signi icant motion in any particular direction, the data obtained do reveal t at ave crests and troughs of a generally similar type were crossed in all directions of tow. Recommendations are: (1) continue evelopment of the thermistor chain to improve the quality, accuracy, and reliability of the data; (2) make detailed studies of the thermocline and its associated internal waves by use of the chain, which includes studies of the effects on the thermocline of islands, shoals, coastal configuration , tides, currents, upwelling, river runoff, water mass boundaries, storms, and seasons; and (3) procure electronic equipment to provide digital tape records of temperature- epth or isotherm-depth data and still retain the present analog recording system. (Aut or 0

Descriptors :   *SUPPLY DEPOTS, *UNDERWATER, FREQUENCY, MEASUREMENT, OCEAN WAVES, OCEANOGRAPHY, TEMPERATURE, THERMAL STRESSES

Distribution Statement : APPROVED FOR PUBLIC RELEASE