نوع مقاله : علمی-پژوهشی
نویسندگان
1 گروه اکتشاف معدن، دانشکده معدن، نفت و ژئوفیزیک، دانشگاه صنعتی شاهرود، شاهرود، ایران
2 عضوم محترم هیئت علمی مهندسی معدن دانشگاه شاهرود
3 دانشگاه محقق اردبیلی، اردبیل، ایران
4 شرکت انرژیهای تجدیدپذیر و بهرهوری انرژی برق، تهران، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The presence of numerous hot springs in the Sabalan region makes it a highly favorable area for geothermal exploration. In this study, magnetotelluric (MT) data were employed to investigate the thermal origin of geothermal resources in the southern sector of the Sabalan volcanic summit. For this purpose, data from 13 MT stations along a profile with varying station spacing were employed. Since magma exhibits lower electrical resistivity compared to the surrounding host rocks, it can be detected through the magnetotelluric method. Dimensionality analysis revealed shallow-to-medium-depth structures dominated by one- and two-dimensional geometries, while deeper structures exhibited three-dimensional complexity. A two-dimensional isotropic inversion was performed using an adaptive finite element method, incorporating rapid Occam inversion to minimize the objective function. Sensitivity analysis was conducted to evaluate the reliability of the conductive structures resolved in the final model, confirming high accuracy and robustness. The two-dimensional inversion model demonstrated that one of the thermal sources of the geothermal system originates from the southern sector of Sabalan's summit. Furthermore, the migration of high-temperature fluids is controlled by fault-induced fractures in the southern region, directing the fluids toward the northwest.
کلیدواژهها [English]
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