scholarly journals Magnetotelluric method aplication for conceptual modelling of geothermal system Pariangan West Sumatera

Author(s):  
T Kusmita ◽  
A M Fath ◽  
MZ N ◽  
W Joni
Author(s):  
Wahyu Hidayat ◽  
Hafiz Hamdalah ◽  
Hana Aulia K

<p><span style="font-size: medium;">Satu daerah yang diduga terdapat sistem panasbumi adalah daerah Gunung Pancar, Bogor, Jawa Barat.<em> </em>Beberapa mata air panas yang muncul di sekitar daerah penelitian memperkuat dugaan adanya sistem panasbumi di daerah tersebut<em>.</em> Metode geofisika yang dapat digunakan untuk mengidentifikasi sistem panasbumi adalah Metode Audio Magnetotelurik (AMT). Penelitian ini menggunakan metode AMT untuk mendapatkan gambaran bawah permukaan dengan pemodelan 1D dan pemodelan 2D. Pengolahan data dilakukan dengan menggunakan <em>software</em> MT Editor, Interpex, dan Petrel. <em>Geoelectrical</em> <em>strike</em> digunakan untuk mengetahui arah <em>strike</em> bawah permukaan dimana nilai kontras resistivitasnya dapat diindikasikan sebagai gangguan geologi. Data yang digunakan adalah data <em>angle</em> dan <em>radius</em> pada <em>software</em> MT Editor. Sementara <em>software</em> yang digunakan untuk membuat diagram roset adalah <em>software</em> GeoRose. Hasil pemodelan menunjukkan adanya komponen panasbumi berupa <em>claycap </em>(1 Ω.m – 10 Ω.m) dan <em>reservoir </em>(10 Ω.m – 20 Ω.m) pada kedalaman 300 m hingga 2000 m. Lapisan <em>young sedimentary rock </em>diinterpretasikan sebagai zona aliran air panas dengan nilai tahanan jenis sebesar 10 Ω.m – 100 Ω.m. Sistem panasbumi di daerah penelitian diduga dikontrol oleh struktur geologi berupa sesar mendatar, antiklin, dan sinklin yang berkembang di bagian timurlaut daerah penelitian. </span></p><p><em style="font-size: medium;">T</em><em style="font-size: medium;">he areas that possibly had geothermal system is Mount Pancar, Bogor, West Java. There are several hot springs found around the study area. The geophysical method that can be used to identify the geothermal system and geological structure is the Audio-Magnetotelluric Method (AMT). AMT method is used to obtain subsurface overview with 1D modeling and 2D modeling. Data processing is done by using MT Editor, Interpex, and Petrel software. Geoelectrical strike is used to determine the direction of the subsurface strike by resistivity value. The most dominant angle and radius data from software MT Editor is used to make rosette diagram to show the geoelectrical strike. The results of 1D modeling showed the geothermal component such as claycap (1 Ω.m - 10 Ω.m) and reservoir (10 Ω.m - 20 Ω.m) at a depth of 300 m to 2000 m. The young sedimentary rock layer is interpreted as a discharge zone with a resistance value of 10 Ω.m - 100 Ω.m. The geothermal systems in the study area might be controlled by geological structures in the northeast of the study area.</em></p>


Geothermics ◽  
2021 ◽  
Vol 96 ◽  
pp. 102205
Author(s):  
Keiichi Ishizu ◽  
Yasuo Ogawa ◽  
Toru Mogi ◽  
Yusuke Yamaya ◽  
Toshihiro Uchida

2014 ◽  
Vol 13 (3) ◽  
Author(s):  
Agustinus Denny Unggul Raharjo

<p class="BodyA">South Manokwari Regency is a new autonomous region in West Papua Province with abundant natural resources. As a new autonomous region South Manokwari Regency will be experiencing significant population growth. Population growth along with development and modernization will give burden to electricity demand. Alternatively, electricity can be provided with geothermal resources in Momiwaren District. Based on survey conducted by the government through the Geology Resources Centre in 2009, the reservoir temperature of the geothermal sources is 84<sup>o</sup>C with non volcanic geothermal system. Thus, the geothermal resources in South Manokwari Regency could be developed into binary cycle electric generator.</p>


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