Accession Number : ADA329878

Title :   Frequency Dependent Electrokinetic Studies of Rocks and Soils.

Descriptive Note : Final rept. 1 Mar 95-28 Feb 97,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF EARTH ATMOSPHERIC AND PLANETARY SCIENCES

Personal Author(s) : Morgan, Frank D. ; Reppert, Philip

PDF Url : ADA329878

Report Date : 15 JUL 1997

Pagination or Media Count : 37

Abstract : An experimental apparatus and data acquisition system was constructed to acquire frequency dependent streaming potential coupling coefficient information. The purpose of the experiments was to validate the frequency dependent theories of Pride and Packard. Frequency dependent streaming potential experiments were conducted on one glass capillary and two porous filters. Results indicated that both Packard's and Pride's models can fit the data. Experimentation continued on rocks. The new database and/or models can be used in seismoelectric models/interpretation and allow for the direct in situ determination of permeability. As a direct outcome of the research, a joint USAF/MIT patent disclosure was filed.

Descriptors :   *SEISMIC DETECTION, *ROCK, *EARTHQUAKES, *SOIL SURVEYS, *ELECTROKINETICS, PERMEABILITY, EXPERIMENTAL DATA, DATA ACQUISITION, FILTER ANALYSIS, DETERMINATION, FREQUENCY RESPONSE, CAPILLARY TUBES.

Subject Categories : Geology, Geochemistry and Mineralogy
      Seismology
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE