Identification Geothermal Reservoir of Telomoyo Mount from Anomaly Magnetic Data using 3D Magnetic Inversion

The geophysical investigation research of Telomoyo Mount has been done. We aim to get a description about reservoir of the geothermal system by geomagnetic survey. Magnetic data acquisition has been carried out in 83 points with approximately 44 km 2 of around. The total magnetic anomaly directly modeled by Mag3D software. Using inversion of magnetic 3D, the alteration rock that to be a manifestation of geothermal field has been corrected in 3 areas, they are Keningar, Kendal Duwur, and Sepakung. They have low susceptibility value that approximately -0.173 to -0.498 (SI) and indicated as upflow zone of Telomoyo mount geothermal system. Kendal Duwur area becomes a main reservoir in the 1400 to 3000 meters of depth

Magnetic Modeling of the Diwak-Derekan Geothermal Area with Extension to Bawen, Central Java

In an effort to further advance understanding of Diwak-Derekan geothermal system, a second period of geomagnetic survey of the area including Kaliulo hot spring, Jatikurung hot spring and Kendalisodo geothermal hot spring has been carried out. The magnetic residual anomalies have been reproduced especially on the southern part of the study area. 3D magnetic analysis and interpretation of geological data acquired and collected in the field. Based on magnetic field anomaly and the field geological data, a speculation shows that magnetization intensity assumed for the existence of a cooling magma intrusion is suggested at the southern part of the study area, that is located at Sajen Village