INTERPRETATION OF "CONTROLLED SOURCE AUDIO MAGNETOTELLURIC" (CSAMT) IS VALIDATED WITH WELL LOG DATA AT GEOTHERMAL FIELD, KAMOJANG.

• Main Author: Susilawati
• Format: Theses
• Language: Indonesia
• Subjects: Fisika
• Online Access: https://digilib.itb.ac.id/gdl/view/45075
• Institution: Institut Teknologi Bandung

CSAMT is the one of electromagnetic method which uses unnatural source grounded dipole with the range of frequency between 0.1Hz-10 kHz. In order to qualify the response measured is plan wave, then the corrected source effect. The objective of this study was to obtain that have been corrected for source to have the same characteristic as MT data. CSAMT data that has been corrected, subsequently inverted to get the exact model and validated to well log data in the form of temperature data. After interpretation found that the some of the line measurement at geothermal field Kamojang has three layers. There are the first layer is a layer of overburden, identified with resistivity values ranging from 100-151 ?.m with temperature at KMJ-7 at a depth of 96 meters is 140oC. The second layer is a layer of clay, identified with resistivity values ranging from 2,5 - 15 ?.m with 900-1400m thickness with temperature data on KMJ-12 range 180-200oC, and the next layer is more resistive layer than the second layer is 18 ?.m - 100 ?.m with temperature data at KMJ-53 at a depth of 710 meters is 240oC