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3DTOM: three-dimensional geophysical tomography.

Authors
Jackson-MJ; Tweeton-DR
Source
Minneapolis, MN: U.S. Department of the Interior, Bureau of Mines, RI 9617, 1996 Jan; :1-92
Link
NIOSHTIC No.
20039457
Abstract
3DTOM is A DOS-compatible computer program developed by the U.S. Bureau of Mines of three-dimensional tomographic imaging of the subsurface at mine sites. The program uses the simultaneous iterative reconstruction technique (SIRT) to invert travel-time data and produce maps of wave velocity, or to invert amplitude data and generate maps of wave attenuation coefficients. 3DTOM permits the use of hard constraints, or soft constraints based on fuzzy logic, to allow for uncertainty in the constraints. Reliable subsurface images are useful in many different mine-related problems, including void detection, fracture detection, fluid monitoring, and qualitative stress evaluation.
Keywords
Computer-aided-tomography; Detection; Monitoring; Electromagnetic-waves; Geophysical-surveys; Imaging-techniques; Mines-Excavations; Mining-geology; Ray-tracing; Seismic-waves; Site-characterization; Subsurface-investigations; Three-dimensional; User-manuals; Wave-attenuation
Publication Date
19960101
Document Type
Report of Investigations
Fiscal Year
1996
NTIS Accession No.
PB96-139712
NTIS Price
A05
Identifying No.
RI-9617
NIOSH Division
TCRC
Source Name
Minneapolis, MN: U.S. Department of the Interior, Bureau of Mines, RI 9617
State
MN
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