Accession Number : ADA139897

Title :   Instrumentation Requirements for Small Scale Towed Temperature Measurements.

Descriptive Note : Memorandum rept.,


Personal Author(s) : Dugan,J P ; Morris,W D

PDF Url : ADA139897

Report Date : 28 Mar 1984

Pagination or Media Count : 26

Abstract : Measurements of horizontal ocean temperature structure are difficult to obtain by towing sensors from research vessels because the tow cable induces sensor platform motions which contaminate the data. In this report, temperature data which previously were acquired in the thermocline with special care are used to specify the acceptable level of motion and to prescribe appropriate sensor noise levels. In the swell-induced ship motion band, for example, the rms vertical displacements of the sensors should be less than several centimeters and temperature sensors should resolve fluctuations of one millidegree Celsius in regions of high (approx 0.1 C/m) temperature gradient.

Descriptors :   *Temperature, *Measuring instruments, Oceanographic equipment, Temperature sensitive elements, Arrays, Towing, Underwater, Motion, Noise

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE