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- W1968203498 abstract "Global optimization with very fast simulated annealing (VFSA) in association with joint inversion is performed for 1D earth structures. The inherent problems of equivalence and suppression in electromagnetic (EM) and direct current (DC) resistivity methods are studied. Synthetic phase data from multifrequency sounding using a horizontal coplanar coil system and synthetic apparent resistivity data from Schlumberger DC resistivity measurements are inverted individually and jointly over different types of layered earth structures. Noisy data are also inverted. The study reveals that global optimization of individual data sets cannot solve inherent equivalence or suppression problems. Joint inversion of EM and DC measurements can overcome the problem of equivalence very well. However, a suppression problem cannot be solved even after combination of data sets. This study reveals that the K‐type earth structure is easiest to resolve while the A‐type is the most difficult. We also conclude that the equivalence associated with a thin resistive layer can be resolved better than that for a thin conducting layer." @default.
- W1968203498 created "2016-06-24" @default.
- W1968203498 creator A5009787517 @default.
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- W1968203498 date "1999-03-01" @default.
- W1968203498 modified "2023-10-16" @default.
- W1968203498 title "Appraisal of equivalence and suppression problems in 1D EM and DC measurements using global optimization and joint inversion*" @default.
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- W1968203498 doi "https://doi.org/10.1046/j.1365-2478.1999.00121.x" @default.
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