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Details of the abstract

Title of paper Anisotropy estimation using 1D joint inversion of DC resistivity and CSRMT methods in the granite-gneiss terrains of Eastern Ghats, India
List of authors Singh, A., Agrahari, S., Shlykov, A., Saraev, A., Yadav, A.
Affiliation(s) Indian Institute of Technology, Kharagpur, India
Indian Institute of Technology, Kharagpur, India
St. Petersburg State University, Russia
St. Petersburg State University, Russia
Indian Institute of Technology, Kharagpur, India
Summary The joint inversion of a galvanic and an inductive method is a standard procedure for the estimation of resistivity anisotropy of the subsurface. Other advantages of the joint inversion include the enhancement in the resolution and the importances of the model parameters obtained after the joint inversion. The joint inversion of the DC resistivity method and far-field CSRMT method is utilized to evaluate the resistivity anisotropy in the fractured granite-gneissic terrains of Eastern Ghats, Odisha, India. A table depicting the importances justifies the accuracy of the joint inversion. The interpreted results validate the inferences made from a borehole lithology in the area. The anisotropy in the subsurface is found to increase with depth and is more pronounced near the fractured horizons. Also, the magnitude of the anisotropy varies up to 15.
Session Keyword 6.0 Rock and Mineral Resistivity, and Anisotropy
File upload 6.0_anisotropy_estimation_usi_singh.pdf
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