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Spectral Analysis of MT Data Measured at the Tucuman Basin
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 2nd International Congress of the Brazilian Geophysical Society, Oct 1991, cp-316-00074
Abstract
During 1990 a magnetotelluric survey have been performed in the Tucuman basin at the north-east of Argentina. Spectral analysis of data in the interval 0.1-200 sec have been made using the conventional periodogram method. Though a good estimation has been achieved, the errors were in some cases important. To determinate if this kind of analysis may be improved we have adapted a robust processing method to the selected range of frequencies and the resulting spectra were compared with the ones previously obtained.