Abstract

This study develop geophysics conceptual model for geothermal fields based on magnetic data interpretation. The fields are Diwak and Derekan which located in Indonesia. PPM (Proton Precession Magnetometer) was used to measure 99 moving area points and two points as a base station simultaneously. Measurement data is processed by daily variation and IGRF (International Geomagnetic Reference Field) correction. The data has been used to create a contour of total magnetic field anomalies and subsurface cross sections involving the upward continuation and reduction to the poles. The results show total magnetic field anomaly closure pair of positive and negative closure, indicate a fault zone below the surface. This measurement result is in agreement with prediction results of the model, that is also show two faults in southwest-northeast area. This fault zone is used as an outlet media of fluid to the surface of geothermal systems.

Keywords:

Conceptual model, geothermal, total magnetic field,

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Competing interests

The authors have no competing interests.

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