%0 Generic
%A Hawariyah Afiffah, 1715051009
%C UNIVERSITAS LAMPUNG
%D 2021
%F eprints:68163
%I FAKULTAS TEKNIK
%T IDENTIFIKASI DAERAH PROSPEK RESERVOIR PANAS BUMI DANAU  RANAU BERDASARKAN ANALISA DATA GAYA BERAT DAN  KOMPILASI DENGAN DATA GEOLOGI, GEOKIMIA SERTA    MAGNETOTELLURIK
%U http://digilib.unila.ac.id/68163/
%X The study of the Ranau Lake geothermal area located in Ogan Komering Ulu  Regency, South Sumatra and West Lampung Regency, Lampung aims to identify  the structure and determine the location of the geothermal reservoir prospect  based on analysis of gravity data, geological data, geochemical data and  Magnetotelluric data. The data used is complete Bouguer Anomaly data. Data  processing was carried out using Surfer software, Geosoft Oasis Montaj, Grablox  and Microsoft Excel. The data processing process starts from spectrum analysis  using a moving average filter to determine the depth of the anomaly using  Microsoft Excel software. Separation of residual and regional Bouguer anomalies  was performed using a moving average filter with 13 km windows. For residual  anomalies, derivative analysis was performed to determine the faults and  geological boundaries of the study area. 3D modeling is done using grablox  software and oasis montaj software, which produces a density model distribution.  The results of data processing obtained Bouguer anomaly of 10 mGal-56 mGal.  The results of the Second Vertical Derivative show a zero value which is the limit  of geological characteristics, namely the presence of faults and differences in  physical properties of rock density. The fault structure identified is a normal fault  with a northwest-southeast trend, which is located in the northeast, northwest,  southeast, southwest, south and northeast. The normal fault has a north-south  direction, located in the eastern part of the study area. There is a prospect zone  which is thought to be a geothermal reservoir zone at a depth of 1-2 km with a  density of 1.9-2.2 gr/cc located around the geothermal manifestation, around the  peak of Mount Seminung, to the south and northeast of the peak of Mount  Seminung.    Keywords: Gravity, geothermal, derivative analysis.      Penelitian daerah panas bumi Danau Ranau yang terletak di Kabupaten Ogan  Komering Ulu, Sumatera Selatan dan Kabupaten Lampung Barat, Lampung  bertujuan untuk mengidentifikasi struktur dan menentukan lokasi prospek  reservoir panas bumi berdasarkan analisis data gaya berat, data geologi, data  geokimia dan data Magnetotellurik. Data yang digunakan merupakan data  Anomali Bouguer Lengkap. Pengolahan data dilakukan dengan software surfer,  geosoft oasis montaj, grablox dan microsoft excel. Proses pengolahan data dimulai  dari analisis spektrum menggunakan filter moving average untuk mengetahui  kedalaman anomali dengan menggunakan software microsoft excel. Pemisahan  anomali Bouguer residual dan regional dilakukan menggunakan filter moving  average dengan windows 13 km. Pada anomali residual dilakukan analisis  derivative untuk mengetahui sesar dan batas geologi daerah penelitian. Pemodelan  3D dilakukan menggunakan software grablox dan software oasis montaj, yang  menghasilkan density model distribution. Hasil pengolahan data didapatkan  anomali Bouguer sebesar 10 mGal-56 mGal. Hasil Second Vertical Derivative  menunjukkan nilai nol yang merupakan batas karakteristik geologi yaitu adanya  sesar serta perbedaan sifat fisis dari densitas batuan. Struktur sesar yang  teridentifikasi merupakan sesar normal berarah baratlaut-tenggara, yang terletak di  timurlaut, baratlaut, tenggara, baratdaya, selatan dan timurlaut. Sesar normal  berarah utara-selatan, terletak di bagian timur daerah penelitian. Terdapat zona  prospek yang diduga merupakan zona reservoir panas bumi pada kedalaman 1-2  km dengan densitas 1.9-2.2 yang terletak di sekitar manifestasi panas bumi,  sekitar puncak Gunung Seminung, sebelah selatan dan sebelah timurlaut puncak  Gunung Seminung.  Kata Kunci: Gaya berat, panas bumi, analisis derivative.