Electromagnetic images of the Earth from near-surface to deep within the mantle
نویسنده
چکیده
The natural-source magnetotelluric (MT) technique has one major advantage over all other electrical or electromagnetic (EM) methods: namely that the skin depth phenomenon ensures that all depths can be probed using MT data, albeit with decreasing resolution with depth due to the intrinsic spatiallyaveraging filter of the method. Thus, one can tune MT for the depth of interest and use the same processing, analysis, modelling and inversion approaches; one must only use different magnetic sensors and different input boards and higher digitizing rates.
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