Geomagnetic induction studies in Scandinavia. III Magnetotelluric observations
Abstract
Magnetic observations recorded by two instruments of the Scandinavian Magnetometer Array are combined with telluric measurements made at the same locations, and the joint data sets are analyzed in order to derive the magnetotelluric (MT) response functions for those locations. Audiomagnetotelluric measurements were also made at one of the locations. The analytic methods employed are discussed and a general technique for reducing any possible timing discrepancy between the telluric and magnetic data sets is described and utilized. Models consistent with the resulting MT response functions from the two locations are discovered by a Monte Carlo random search of the parameter spaces, and resistivity-depth profiles are presented. The acceptable models are shown to be highly compatible with those for horizontal spatial gradient data.
- Publication:
-
Journal of Geophysics Zeitschrift Geophysik
- Pub Date:
- 1983
- Bibcode:
- 1983JGZG...54...35J
- Keywords:
-
- Geomagnetism;
- International Magnetospheric Study;
- Magnetic Induction;
- Telluric Currents;
- Finland;
- Magnetometers;
- Monte Carlo Method;
- Power Spectra;
- Statistical Analysis;
- Sweden