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Reduction of the geological noise in magnetotelluric soundings

Reduction of the geological noise in magnetotelluric soundings

Geoexploration 25(2): 145-161

The author believes that it is hardly possible to reduce the effect of geological noise on magnetotelluric soundings by solving forward and inverse problems for two- and three-dimensional bodies. Therefore, two new approaches are suggested for the purpose. In the first approach a spectrum of the ratio of the diagonal tensors at the frequencies and 0 is calculated, 0 being relatively high so that the field is defined by the geoelectrical parameters of the upper section. The second approach suggests a spatial spectrum analysis of the diagonal impedance tensor.

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Accession: 019872759

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DOI: 10.1016/0016-7142(88)90010-5

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