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Title: Two and three dimensional magnetotelluric inversion

Abstract

Electrical conductivity depends on properties such as the presence of ionic fluids in interconnected pores that are difficult to sense with other remote sensing techniques. Thus improved imaging of underground electrical structure has wide practical importance in exploring for groundwater, mineral and geothermal resources, and in assessing the diffusion of fluids in oil fields and waste sites. Because the electromagnetic inverse problem is fundamentally multi-dimensional, most imaging algorithms saturate available computer power long before they can deal with the complete data set. We have developed an algorithm to directly invert large multi-dimensional data sets that is orders of magnitude faster than competing methods. We have proven that a two-dimensional (2D) version of the algorithm is highly effective for real data and have made substantial progress towards a three-dimensional (3D) version. We are proposing to cure identified shortcomings and substantially expand the utility of the existing 2D program, overcome identified difficulties with extending our method to three-dimensions (3D) and embark on an investigation of related EM imaging techniques which may have the potential for even further increasing resolution.

Authors:
Publication Date:
Research Org.:
Washington Univ., Seattle, WA (United States)
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
6602656
Report Number(s):
DOE/ER/14064-T1
ON: DE93013233
DOE Contract Number:  
FG06-89ER14064
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; MAGNETOTELLURIC SURVEYS; DATA PROCESSING; ALGORITHMS; ELECTRIC FIELDS; ELECTROMAGNETIC FIELDS; ELECTROMAGNETIC SURVEYS; GEOLOGIC DEPOSITS; MAGNETIC FIELDS; PROGRESS REPORT; DOCUMENT TYPES; ELECTRICAL SURVEYS; GEOPHYSICAL SURVEYS; MATHEMATICAL LOGIC; PROCESSING; SURVEYS; 440700* - Geophysical & Meteorological Instrumentation- (1990-)

Citation Formats

Booker, J. Two and three dimensional magnetotelluric inversion. United States: N. p., 1993. Web. doi:10.2172/6602656.
Booker, J. Two and three dimensional magnetotelluric inversion. United States. https://doi.org/10.2172/6602656
Booker, J. 1993. "Two and three dimensional magnetotelluric inversion". United States. https://doi.org/10.2172/6602656. https://www.osti.gov/servlets/purl/6602656.
@article{osti_6602656,
title = {Two and three dimensional magnetotelluric inversion},
author = {Booker, J},
abstractNote = {Electrical conductivity depends on properties such as the presence of ionic fluids in interconnected pores that are difficult to sense with other remote sensing techniques. Thus improved imaging of underground electrical structure has wide practical importance in exploring for groundwater, mineral and geothermal resources, and in assessing the diffusion of fluids in oil fields and waste sites. Because the electromagnetic inverse problem is fundamentally multi-dimensional, most imaging algorithms saturate available computer power long before they can deal with the complete data set. We have developed an algorithm to directly invert large multi-dimensional data sets that is orders of magnitude faster than competing methods. We have proven that a two-dimensional (2D) version of the algorithm is highly effective for real data and have made substantial progress towards a three-dimensional (3D) version. We are proposing to cure identified shortcomings and substantially expand the utility of the existing 2D program, overcome identified difficulties with extending our method to three-dimensions (3D) and embark on an investigation of related EM imaging techniques which may have the potential for even further increasing resolution.},
doi = {10.2172/6602656},
url = {https://www.osti.gov/biblio/6602656}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1993},
month = {Fri Jan 01 00:00:00 EST 1993}
}