Simple effective resistivity-depth transformations for infield or real-time data processing

• Published in: Computers & geosciences Vol. 21; no. 8; pp. 985 - 992
• Main Author: Meju, Max A.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01-10-1995; Elsevier Science
• Subjects: Earth sciences; Earth, ocean, space; Electrical and electromagnetic methods; Exact sciences and technology; Geophysics: general, magnetic, electric and thermic methods and properties; Infield data analysis; Internal geophysics; Resistivity surveying; Infield data analysis; Resistivity surveying; Electrical and electromagnetic methods; algorithms; depth; transformations; resistivity
• ISSN: 0098-3004; 1873-7803
• DOI: 10.1016/0098-3004(95)00035-7

Electrical and electromagnetic geophysical methods are used routinely in a variety of subsurface investigations. However, because of the considerable computational requirements, the recorded field data usually are not processed on-the-spot such that the success of each measurement is determined
post-facto and this may have undesirable practical consequences. It would be more cost-effective to assess the success of a sounding on-site and modify the experimental set-up as appropriate. To serve this purpose, a suite of simple effective data transformation schemes are presented for rapid infield resistivity-depth analysis. The schemes can be implemented on a simple programmable scientific calculator or field microcomputer and provide results that are comparable to the more rigorous conventional one-dimensional modeling algorithms. Sample applications to dc resistivity, transient electromagnetic and magnetotelluric field data are provided to demonstrate the general usefulness of the algorithms.