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DOI	10.3389/feart.2023.1138360
	Electrical structure of Gulu geothermal field in Southern Tibet and its implication for the high-temperature geothermal system
	Wan, Hanping; Wang, Qiao
发表日期	2023
EISSN	2296-6463
卷号	11
英文摘要	The Yadong-Gulu rift (YGR) South Tibet is a Cenozoic active rift, which is endowed with abundant geothermal resources. The Gulu geothermal field (GGF) is located in the Northern section of the rift, where a large number of high-temperature hot springs develop, but its geothermal system is mysterious. In this study, the three-dimensional (3D) electrical structure of GGF is revealed by broad magnetotelluric (MT) and audio magnetotelluric (AMT). MT reveals that middle and upper crust conductors are developed in the subsurface of GGF. The conductors may originate from the partial melting that drives the geothermal system. AMT reveals that the electrical structure of GGF is conductive alternation cap overlying more resistive reservoir, which is consistent with the classical electrical structure of geothermal systems in worldwide active tectonic zones. According to the geothermal system model, cold fluids may converge from the periphery of GGF to the middle, wherein fault F1 (the Western branch of Jiulazi-Sanxung fault) may be the main channel for cold fluids to migrate downward. The fluids are heated by partial melting in the middle and upper crust, and may migrate upward along fault F2 (the middle branch of Jiulazi-Sanxung fault) and develop into heat reservoirs.
关键词	magnetotelluric audio magnetotelluric Gulu geothermal filed geothermal system model electrical structure
英文关键词	INDIAN LITHOSPHERIC SLAB; GEOPHYSICAL EXPLORATION; MAGNETOTELLURIC DATA; HEAT-FLOW; CRUST; BENEATH; EXTENSION; SUBDUCTION; EVOLUTION; INVERSION
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:000946061700001
来源期刊	FRONTIERS IN EARTH SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283186
作者单位	China Geological Survey; Chengdu Center, China Geological Survey
推荐引用方式 GB/T 7714	Wan, Hanping,Wang, Qiao. Electrical structure of Gulu geothermal field in Southern Tibet and its implication for the high-temperature geothermal system[J],2023,11.
APA	Wan, Hanping,&Wang, Qiao.(2023).Electrical structure of Gulu geothermal field in Southern Tibet and its implication for the high-temperature geothermal system.FRONTIERS IN EARTH SCIENCE,11.
MLA	Wan, Hanping,et al."Electrical structure of Gulu geothermal field in Southern Tibet and its implication for the high-temperature geothermal system".FRONTIERS IN EARTH SCIENCE 11(2023).