Accession Number : AD0663122

Title :   ELECTRICAL RESISTIVITY OF MODERN MARINE SEDIMENTS FROM THE BERING SEA.

Descriptive Note : Research rept., Jun 65-Mar 67,

Corporate Author : NAVAL UNDERSEA WARFARE CENTER SAN DIEGO CALIF

Personal Author(s) : Boyce,Robert E.

Report Date : SEP 1967

Pagination or Media Count : 110

Abstract : A study of the relationships between electrical resistivity and the bulk physical properties of sea-floor sediments. Electrical resistivity was measured in gravity-cored, unconsolidated sediments from the Bering Sea. Resistivity ranged from 29.1 to 71.0 ohm-cm at 25C and irregularly increased 11 ohm-cm in the first meter below the sediment surface, principally because of porosity changes. In situ resistivity may be greater than these laboratory values by a factor of 2. The formation factor, F, which is the ratio of sediment resistivity to interstitial water resistivity, ranged from 1.57 to 3.70 and was related to porosity, phi, and wet bulk density, rho, respectively, by: F = 1.30 phi to the minus 1.45 power and F = 1.12 rho to the 1.72 power of plus or minus 15 percent and plus or minus 10 percent. Within certain limits resistivity may be used to estimate other physical properties of sediment. (Author)

Descriptors :   (*MARINE GEOPHYSICS, BERING SEA), (*SEDIMENTATION, ELECTRICAL RESISTANCE), DENSITY, OCEAN BOTTOM SAMPLING, SEA WATER, PHYSICAL PROPERTIES, SALINITY, MEASUREMENT, POROSITY

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE