Accession Number : ADA018723
Title : Test Results of the Plessey Model 9040 S/T/D Environmental Profiling System.
Descriptive Note : Technical rept.,
Corporate Author : COAST GUARD WASHINGTON D C OCEANOGRAPHIC UNIT
Report Date : MAY 1975
Pagination or Media Count : 20
Abstract : During January 1972, 17 STD casts were taken under controlled conditions using Plessey's Model 9040 S/T/D Environmental Profiling System (STD) in an attempt to determine how the temperature and/or salinity corrections vary with depth. The data indicated that the differences between the quality control salinity values and the salinity values obtaines from the STD system varies by less than 0.02 ppt from the surface down to 3000 meters. However, this correction value was offset from zero by about 0.05 ppt. The temperature correction varied considerably with depth, (about 0.07 deg C), these variations being outside of the manufacturer's specifications. After applying a correction published by the manufacturer, differences between actual depth and recorded depth were generally within instrument accuracy.
Descriptors : *Oceanographic data, *Ocean models, *Salinity, *Thermoclines, *Ocean environments, Depth, Variations, Standard deviation, Oceanographic equipment, Calibration, Corrections
Subject Categories : Physical and Dynamic Oceanography
Distribution Statement : APPROVED FOR PUBLIC RELEASE