Two and three dimensional magnetotelluric inversion

Technical Report · Fri Jul 01 00:00:00 EDT 1994

DOI:https://doi.org/10.2172/10163831· OSTI ID:10163831

Booker, J R

Improved imaging of underground electrical structure has wide practical importance in exploring for groundwater, mineral and geothermal resources, and in characterizing oil fields and waste sites. Because the electromagnetic inverse problem for natural sources is generally multi-dimensional, most imaging algorithms saturate available computer power long before they can deal with complete data sets. We have developed an algorithm to directly invert large multi-dimensional magnetotelluric data sets that is orders of magnitude faster than competing methods. In the past year, we have extended the two- dimensional (2D) version to permit incorporation of geological constraints, have developed ways to assess model resolution and have completed work on an accurate and fast three-dimensional (3D) forward algorithm. We are proposing to further enhance the capabilities of the 2D code and to incorporate the 3D forward code in a fully 3D inverse algorithm. Finally, we will embark on an investigation of related EM imaging techniques which may have the potential for further increasing resolution.

• Research Organization: Washington Univ., Seattle, WA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG06-92ER14231
• OSTI ID: 10163831
• Report Number(s): DOE/ER/14231-1; ON: DE94014820; TRN: 94:007280
• Resource Relation: Other Information: PBD: [1994]
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
15 GEOTHERMAL ENERGY
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
ALGORITHMS
THREE-DIMENSIONAL CALCULATIONS
TWO-DIMENSIONAL CALCULATIONS
MAGNETOTELLURIC SURVEYS
DATA ANALYSIS
GEOTHERMAL RESOURCES
OIL FIELDS
SITE CHARACTERIZATION
RESOLUTION
COMPUTER CALCULATIONS
Geothermal Legacy
020200
150301
990200
RESERVES, GEOLOGY, AND EXPLORATION
GEOPHYSICAL TECHNIQUES AND SURVEYS
MATHEMATICS AND COMPUTERS