Magnetotelluric Imaging of the Zhangzhou Basin Geothermal Zone, Southeastern China

doi:10.3390/en11082170

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	Magnetotelluric Imaging of the Zhangzhou Basin Geothermal Zone, Southeastern China
	Wu, Chaofeng 1; Hu, Xiangyun 1; Wang, Guiling 1,2; Xi, Yufei 2; Lin, Wenjing 2; Liu, Shuang 1,3; Yang, Bo 1; Cai, Jianchao 1
刊名	ENERGIES
	2018-08-01
卷号	11 期号:8 页码:15
关键词	magnetotelluric geothermal anomaly high-conductive zone Zhangzhou Basin
ISSN号	1996-1073
DOI	10.3390/en11082170
英文摘要	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.
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]
WOS关键词	STATIC SHIFT ; SOUTH CHINA ; FIELD DATA ; CONDUCTIVITY ; INVERSION ; MODEL ; LITHOSPHERE ; SUBDUCTION ; DISTORTION ; SOUNDINGS
WOS研究方向	Energy & Fuels
语种	英语
出版者	MDPI
WOS记录号	WOS:000446604100249
资助机构	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
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/89134]
专题	地质与地球物理研究所_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
推荐引用方式 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.