Synthetic Modeling of A Geothermal System Using Audio-magnetotelluric (AMT) and Magnetotelluric (MT)

Southeast Asian Conference on Geophysics

Mega Saputra, Rifki^1 ; Widodo^2

Undergraduate Program of Geophysical Engineering, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung

40132, Indonesia^1

Applied and Exploration Geophysics Research Group, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung

40132, Indonesia^2

关键词: audio-magnetotelluric;    Conductivity distributions;    Electromagnetic methods;    Geothermal exploration;    Geothermal resources;    Geothermal structure;    Geothermal systems;    magnetotelluric;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/62/1/012036/pdf
DOI  :  10.1088/1755-1315/62/1/012036

来源: IOP

【 摘 要 】

Indonesia has 40% of the world's potential geothermal resources with estimated capacity of 28,910 MW. Generally, the characteristic of the geothermal system in Indonesia is liquid-dominated systems, which driven by volcanic activities. In geothermal exploration, electromagnetic methods are used to map structures that could host potential reservoirs and source rocks. We want to know the responses of a geothermal system using synthetic data of Audio-magnetotelluric (AMT) and Magnetotelluric (MT). Due to frequency range, AMT and MT data can resolve the shallow and deeper structure, respectively. 1-D models have been performed using AMT and MT data. The results indicate that AMT and MT data give detailed conductivity distribution of geothermal structure.