STUDI DEFORMASI BIDANG KAMOJANG GEOTHERMAL, DARI DATA OBSERVASI GPS DI TAHUN 2016-2017

• Main Author: VELLA AHALLA HULAIFAH SOMANTRI (NIM:15113030)
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/31453
• Institution: Institut Teknologi Bandung

<p align = "justify">GPS has proven to be an indispensable tool in the effort to understand deformation. GPS establish itself as a state of the art technology which is capable of detecting the ongoing geothermal activities related to its subsidence. In Kamojang Geothermal Field, unfortunately, interaction between tectonics and geothermal activities have never been analyzed using GPS before. Thus, such crustal deformation analyses were never performed and this issue becomes a mandatory subject especially if we look at the long history of Kamojang Geothermal Field and the geographical situation which is located near Guntur Volcano. Data used in this research are GPS observation data from 2016-2017. The data processing resulted in coordinates, with standard deviation value of topocentric coordinates are less than or equal to 11 mm. The precise results are important in order to deliver better results of deformation signal and strain. Deformation signal calculation is done based on the trend analysis of time series displacement plotting of GPS observation points relative to POST. The horizontal component of deformation signal in this area are at range of 2.60 mm/year to 20.75 mm/year in Sundaland block reference, while the maximum value happened in KMJ6 station. Strain patterns occurring around the reservoir area are dominated by compression due to heat and fluid extraction in geothermal activity.<p align = "justify">