Accession Number : AD0703642

Title :   THE MEASUREMENT AND PARTIAL EXPLANATION OF THE EFFECT OF PRESSURE ON THE SPECIFIC ELECTRICAL CONDUCTANCE OF SEA WATER.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Ettle,Robert Erwin

Report Date : OCT 1969

Pagination or Media Count : 80

Abstract : The increase in specific conductance of sea water with increased pressure was measured using two parcels of sea water (32.448 salinity units and 37.152 salinity units) at six temperatures from 2.39C to 17.39C. The pressure was incremented in steps of 140 decibars to a pressure of 4,000 decibars. Although the effect of pressure on the specific conductance of sea water is nearly linear, it must be described by a higher order polynomial if it is to be used to measure salinity to the usual accuracy required in oceanography. The three major effects that cause the increase in the specific conductance of sea water with increased pressure are shown to be: increased effective concentration due to compression, increased ionic mobility due to the breakdown of Frank- Wen clusters, and the increased disassociation of magnesium sulphate ion pairs. (Author)

Descriptors :   (*SEA WATER, ELECTRICAL CONDUCTIVITY), SALINITY, PRESSURE, IONS, DIFFUSION, SULFATES

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE