Exploration of Shallow Geothermal Resources Based on Gravity and Magnetic 3D Inversion in the Wudalianchi–Laoheishan Volcano and Surrounding Areas
Geothermal resources represent one of the most vital renewable energy sources, offering substantial development potential within the energy sector. Wudalianchi, renowned as one of China’s prominent volcanic clusters, has undergone extensive underground volcanic activities, suggesting a promising cap...
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| author | Chunlong Wei Yanwu Guan Xiaolong Li Mingxing Sun Yangang Wu |
| author_facet | Chunlong Wei Yanwu Guan Xiaolong Li Mingxing Sun Yangang Wu |
| author_sort | Chunlong Wei |
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| description | Geothermal resources represent one of the most vital renewable energy sources, offering substantial development potential within the energy sector. Wudalianchi, renowned as one of China’s prominent volcanic clusters, has undergone extensive underground volcanic activities, suggesting a promising capacity for geothermal resource accumulation. This paper is the first to apply the cross-gradient gravity-magnetic joint inversion method to study the shallow structures in the Laoheishan Volcano and surrounding areas of Wudalianchi, based on high-precision measured gravity and magnetic data. The inversion results indicate the presence of a rock body at a depth of approximately 2 km beneath the Laoheishan and Bijiashan regions, which simultaneously exhibits characteristics of low density, high magnetization, and low seismic velocity. Integrating previous research findings, the rock body is interpreted as basalt formed during magmatic activity, retaining remanent magnetism. Furthermore, the rock body contains fractures filled with fluids, thereby excluding the possibility of a shallow magma chamber or dry hot rocks beneath the Laoheishan area. These rock bodies are interconnected at depth and align with the NE and SE fault directions in the Wudalianchi area, confirming that these faults govern the region’s volcanic activities. The inversion results, from the perspectives of density and magnetic susceptibility, elucidate the material distribution in the shallow subsurface of the Laoheishan and surrounding areas, providing new evidence for further exploration of geothermal resources in the region. |
| format | Article |
| id | doaj-art-2228ac2e620540f19d1c7857cfed0342 |
| institution | OA Journals |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
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| spelling | doaj-art-2228ac2e620540f19d1c7857cfed03422025-08-20T02:17:20ZengMDPI AGEnergies1996-10732025-04-01188201110.3390/en18082011Exploration of Shallow Geothermal Resources Based on Gravity and Magnetic 3D Inversion in the Wudalianchi–Laoheishan Volcano and Surrounding AreasChunlong Wei0Yanwu Guan1Xiaolong Li2Mingxing Sun3Yangang Wu4College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, ChinaCollege of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, ChinaJilin Co., Ltd. of China National Building Materials Resources and Environmental Engineering, Changchun 130033, ChinaGuangxi Bureau of Geology & Mineral Prospecting & Exploitation, Nanning 530023, ChinaCollege of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, ChinaGeothermal resources represent one of the most vital renewable energy sources, offering substantial development potential within the energy sector. Wudalianchi, renowned as one of China’s prominent volcanic clusters, has undergone extensive underground volcanic activities, suggesting a promising capacity for geothermal resource accumulation. This paper is the first to apply the cross-gradient gravity-magnetic joint inversion method to study the shallow structures in the Laoheishan Volcano and surrounding areas of Wudalianchi, based on high-precision measured gravity and magnetic data. The inversion results indicate the presence of a rock body at a depth of approximately 2 km beneath the Laoheishan and Bijiashan regions, which simultaneously exhibits characteristics of low density, high magnetization, and low seismic velocity. Integrating previous research findings, the rock body is interpreted as basalt formed during magmatic activity, retaining remanent magnetism. Furthermore, the rock body contains fractures filled with fluids, thereby excluding the possibility of a shallow magma chamber or dry hot rocks beneath the Laoheishan area. These rock bodies are interconnected at depth and align with the NE and SE fault directions in the Wudalianchi area, confirming that these faults govern the region’s volcanic activities. The inversion results, from the perspectives of density and magnetic susceptibility, elucidate the material distribution in the shallow subsurface of the Laoheishan and surrounding areas, providing new evidence for further exploration of geothermal resources in the region.https://www.mdpi.com/1996-1073/18/8/2011WudalianchiLaoheishan Volcanojoint inversion of gravity and magnetic datageothermal resources |
| spellingShingle | Chunlong Wei Yanwu Guan Xiaolong Li Mingxing Sun Yangang Wu Exploration of Shallow Geothermal Resources Based on Gravity and Magnetic 3D Inversion in the Wudalianchi–Laoheishan Volcano and Surrounding Areas Energies Wudalianchi Laoheishan Volcano joint inversion of gravity and magnetic data geothermal resources |
| title | Exploration of Shallow Geothermal Resources Based on Gravity and Magnetic 3D Inversion in the Wudalianchi–Laoheishan Volcano and Surrounding Areas |
| title_full | Exploration of Shallow Geothermal Resources Based on Gravity and Magnetic 3D Inversion in the Wudalianchi–Laoheishan Volcano and Surrounding Areas |
| title_fullStr | Exploration of Shallow Geothermal Resources Based on Gravity and Magnetic 3D Inversion in the Wudalianchi–Laoheishan Volcano and Surrounding Areas |
| title_full_unstemmed | Exploration of Shallow Geothermal Resources Based on Gravity and Magnetic 3D Inversion in the Wudalianchi–Laoheishan Volcano and Surrounding Areas |
| title_short | Exploration of Shallow Geothermal Resources Based on Gravity and Magnetic 3D Inversion in the Wudalianchi–Laoheishan Volcano and Surrounding Areas |
| title_sort | exploration of shallow geothermal resources based on gravity and magnetic 3d inversion in the wudalianchi laoheishan volcano and surrounding areas |
| topic | Wudalianchi Laoheishan Volcano joint inversion of gravity and magnetic data geothermal resources |
| url | https://www.mdpi.com/1996-1073/18/8/2011 |
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