Two-Dimensional Inversion and Interpretation of Magnetotelluric Data in a Seismic Active Area of Northern Part of North China

Le résumé fourni par la source

Two advanced techniques, decomposition of the magnetotelluric (MT) impedance tensor and Rapid Relaxation two-dimensional Inversion (RRI), have been successfully applied to the newly observed MT data. The resultant 2-D electrical structure along Yanggao-Rongcheng profile, which passes through several major tectonic units in northern part of North China, shows that the electrical conductivity structure in the shallow depth agrees well with the regional geological and geophysical information. High conductivity zone is detected discontinuously within middle-lower crust, with obviously lateral inhomogeneity in the crust Highly conductive zone is also found in the upper mantle. Characteristic distribution of conductivity around the earthquake focal area in the crust is discussed.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.