Geothermal prospect areas based on physical characteristics using remote sensing at Cimandiri Fault, West Java

Abstract

Cimandiri fault is an active fault indicated by the appearance of hot springs that prove the presence of geothermal activity. The hot springs have different temperature due to physical characteristics in each location. The purpose of this research is to find geothermal prospective region based on physical characteristics at Cimandiri fault, West Java. This research uses integrated survey methods between geography, geology, and geochemical aspects with remote sensing technology. Remote sensing used in analyzing Land Surface Temperature in research areas. The Geochemical survey is done by collecting hot spring samples to get consentration of the Na and K elements. The data latter are used in counting reservoir temperature using Geothermometry method. The results concluded that there are three geothermal prospective regions in Cimandiri Fault classified in low and moderate levels. The low geothermal prospective region is represented in Cibubuay region with reservoir temperature of 109°C at high fault density zone, low concentration of Na/K, low reservoir temperature, and the hot springs located far away from the fault. The moderate geothermal prospective regions are represented in Cibadak region (130°C) and Cikundul region (189°C) at low until moderate fault density zone, high concentration of Na/K, moderate reservoir temperature, and the hot springs located close to the fault.