Inversion of deep-sea vertical electric soundings using the correlational similarity method |
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| Authors: | L F Moskovskaya |
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| Institution: | (1) State Company “Sevmorgeo” (SCS), St. Petersburg, Russia |
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| Abstract: | A method is proposed for the inversion of marine vertical electric sounding (VES) data in a tomographic approximation. A 2.5-D inversion is based on the correlational similarity method; this method is a natural stabilizer of the solution and provides the most compact image of an anomaly carrier. The algorithm possesses a high convergence rate. The inversion reduces to the expansion of anomalous stresses in orthogonal reference functions that are spatial focusing coefficients of a VES configuration. The coefficients were calculated with the help of a new method of contracting mappings allowing one to construct efficient algorithms for calculating electromagnetic fields on a dense spatial grid. Results of experimental in situ data inversion refined the morphology of deep-sea polymetallic sulfides of the Logachev-1 orefield in the Atlantic Ocean. |
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