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EXPLORATION OF HIGH RESISTIVITY BASEMENT USING ELECTRICAL AND MAGNETIC FIELDS OF QUASI‐STATIC POINT SOURCES *
Author(s) -
SZARKA L.
Publication year - 1983
Publication title -
geophysical prospecting
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.735
H-Index - 79
eISSN - 1365-2478
pISSN - 0016-8025
DOI - 10.1111/j.1365-2478.1983.tb01089.x
Subject(s) - electrical resistivity and conductivity , geology , gemology , economic geology , electrical impedance , magnetic field , basement , point (geometry) , noise (video) , regional geology , geophysics , conductance , mineralogy , engineering geology , geotechnical engineering , telmatology , geometry , hydrogeology , condensed matter physics , physics , electrical engineering , seismology , mathematics , computer science , tectonics , engineering , image (mathematics) , civil engineering , quantum mechanics , volcanism , artificial intelligence
A bstract Determination of thickness of sediments (usually of high conductivity) overlying a high‐resistivity basement is one of the basic problems of electrical exploration methods. This paper proposes to determine horizontal electrical conductance on the basis of impedance calculated from electrical and magnetic fields of distant quasi‐static (low‐frequency) point sources. Using the proposed method, horizontal conductance of the sediments can be determined also from artificial quasi‐static noise‐impulses coming from sources of unknown position and intensity. The results of analogue modeling and field examples prove the potential of the proposed technique.