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Magnetotelluric Imaging of the Zhangzhou Basin Geothermal Zone, Southeastern China
Wu, Chaofeng1; Hu, Xiangyun1; Wang, Guiling1,2; Xi, Yufei2; Lin, Wenjing2; Liu, Shuang1,3; Yang, Bo1; Cai, Jianchao1
2018-08-01
发表期刊ENERGIES
ISSN1996-1073
卷号11期号:8页码:15
摘要The geothermal zone of southeast China, which is one of the country's known geothermal zones, contains significant natural geothermal resources. To understand the formation of geothermal resources, a magnetotelluric (MT) investigation with a site spacing of 1-2 km was carried out around the Zhangzhou Basin. The recorded MT data were processed by robust time series and remote reference processing techniques. The data analysis results revealed that two-dimensional (2-D) modeling can be used to approximately determine the electrical structure. The joint inversions of TE and TM modes have been performed after distortion decomposition. In the inversion models, a low resistivity cap of 200-800 m thickness was observed, which represented the blanketing sediments composed of Quaternary and volcanic rocks of the late Jurassic period. The presence of high resistivity above a depth of 20 km indicates the granites are widely developed in the upper and middle crust. MT measurements have revealed some deep-seated high conductive zones, which were inferred to be partially melting at depth of 8-17 km, which is likely to be reason behind the formation of higher-temperature hot springs. The results also show that there is a shallower Moho, which indicates that the heat from the upper mantle may have a big contribution to the surface heat flow. Fractures-controlled meteoric fluid circulation is the most likely explanation for the hot springs.
关键词magnetotelluric geothermal anomaly high-conductive zone Zhangzhou Basin
DOI10.3390/en11082170
资助者National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; opening foundation of the State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; opening foundation of the State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; opening foundation of the State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; opening foundation of the State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; opening foundation of the State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; opening foundation of the State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; opening foundation of the State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; opening foundation of the State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences
关键词[WOS]STATIC SHIFT ; SOUTH CHINA ; FIELD DATA ; CONDUCTIVITY ; INVERSION ; MODEL ; LITHOSPHERE ; SUBDUCTION ; DISTORTION ; SOUNDINGS
语种英语
资助项目National Nature Science Foundation of China[41630317] ; National Nature Science Foundation of China[41474055] ; National Key Research and Development Program of China[2017YFC0602405] ; opening foundation of the State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences[Kai-201601]
资助者National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; opening foundation of the State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; opening foundation of the State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; opening foundation of the State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; opening foundation of the State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; opening foundation of the State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; opening foundation of the State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; opening foundation of the State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; opening foundation of the State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences
WOS研究方向Energy & Fuels
WOS类目Energy & Fuels
WOS记录号WOS:000446604100249
出版者MDPI
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.iggcas.ac.cn/handle/132A11/89134
专题其他部门
通讯作者Hu, Xiangyun
作者单位1.China Univ Geosci, Inst Geophys & Geomat, Hubei Subsurface Multiscale Imaging Key Lab, Wuhan 430074, Hubei, Peoples R China
2.Chinese Acad Geol Sci, Inst Hydrogeol & Environm Geol, Shijiazhuang 050061, Hebei, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
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GB/T 7714
Wu, Chaofeng,Hu, Xiangyun,Wang, Guiling,et al. Magnetotelluric Imaging of the Zhangzhou Basin Geothermal Zone, Southeastern China[J]. ENERGIES,2018,11(8):15.
APA Wu, Chaofeng.,Hu, Xiangyun.,Wang, Guiling.,Xi, Yufei.,Lin, Wenjing.,...&Cai, Jianchao.(2018).Magnetotelluric Imaging of the Zhangzhou Basin Geothermal Zone, Southeastern China.ENERGIES,11(8),15.
MLA Wu, Chaofeng,et al."Magnetotelluric Imaging of the Zhangzhou Basin Geothermal Zone, Southeastern China".ENERGIES 11.8(2018):15.
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