#TITLE_ALTERNATIVE#

• Main Author: WIDYA NUGRAHA (nim :124 04 010), HANIF
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/22352
• Institution: Institut Teknologi Bandung

Magnetotellurics is a passive exploration technique that utilizes a broad spectrum of naturally <br /> <br /> occurring geomagnetic variations as a power source for electromagnetic induction in the earth. <br /> <br /> MT method generally is used in geothermal exploration because there is a close relationship <br /> <br /> between resistivity and temperature. <br /> <br /> Observed anomaly is low resistivity (<20 ohmmeter) which interpreted as a response from <br /> <br /> geothermal sources environment. Maps of invariant resistivity was used for interpretation of MT <br /> <br /> data in area which have a complex geological condition such as volcanoes. Invariant component <br /> <br /> was used to simplify the problem of multidimensional dependencies between vertical and <br /> <br /> horizontal magnetic field component. <br /> <br /> From differentiation of Arrhenius equation, we obtain equation relating resistivity gradient and <br /> <br /> temperature gradient. True gradient of resistivity is approximated by apparent gradient of <br /> <br /> resistivity result from data processing. Resistivity gradient map shows us a better anomaly border <br /> <br /> than resistivity map. Result from mapping was cross-checked with simple 1-D resistivity <br /> <br /> structure model.