Studies on the relationships of the Curie surface with heat flow and crustal structures in Yunnan Province, China, and its adjacent areas
Studies on the relationships of the Curie surface with heat flow and crustal structures in Yunnan Province, China, and its adjacent areas
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云南及邻区居里面与热流及地壳结构的关系研究
DOI：
10.1186/s40623-019-1063-1
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发表时间：
2019-08
影响因子：
3
通讯作者：
Gao Guoming
中科院分区：
文献类型：
--
作者：
Wen Limin;Kang Guofa;Bai Chunhua;Gao Guoming
居里表面指示了地下热场的分布，为地壳和地幔的热力作用提供了清晰的标志。本文基于NGDC-720地磁场模型和航磁资料，利用磁异常功率谱分析方法对云南及其邻区居里面进行了估算。结合居里面分布与区域热流、地温梯度、地壳波速比异常、高导层异常、莫霍面等特征，揭示了磁基底波动与地壳结构的联系。结果表明：研究区居里面起伏明显；居里表面与表面热流近似成反比。丽江-建川-宝山-腾冲带和建川-楚雄-昆明-玉溪带是两个居里地表隆起带，其壳幔热流相对较高。沿丽江—小金河断裂和红河断裂的居里地表隆起带与断裂带走向一致，部分与青藏高原东向物质流动一致。居里表面隆起带与地壳的高波速比、高导电性层异常区一致。居里表面的深度小于莫霍表面的深度。
A Curie surface indicates the distribution of the thermal fields underground, providing a clear marker for the thermodynamic effect in the crust and mantle. In this paper, based on a geomagnetic field model (NGDC-720) and aeromagnetic data, we use power spectrum analysis of magnetic anomalies to estimate the Curie surface in Yunnan Province, China, and its adjacent areas. By combining the distribution of the Curie surface with regional heat flow, the geothermal gradient, crustal wave velocity ratio anomalies, high-conductivity layer anomalies, and the Moho surface, we reveal the connection between the undulation of the magnetic basement and the crustal structures. The results indicate that the uplift and depression of the Curie surface in the research area are distinct. The Curie surface is approximately inversely correlated to the surface heat flow. The Lijiang-Jianchuan-Baoshan-Tengchong and Jianchuan- Chuxiong- Kunming-Yuxi zones are two Curie surface uplift zones, and their crust-mantle heat flows are relatively high. The Curie surface uplift zone along the Lijiang-Xiaojinhe fault and Red River fault is consistent with the heading direction of the fault zone and is partially in agreement with the eastward mass flow of the Tibetan Plateau. The Curie surface uplift zone is consistent with the high wave velocity ratio and high-conductivity layer anomaly region of the crust. The depth of the Curie surface is less than the depth of the Moho surface.
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DOI：
--
发表时间：
2004
期刊：
Acta Geological Sinica
影响因子：
--
作者：
G. Ye
通讯作者：
G. Ye
DOI：
10.1016/j.cageo.2005.02.005
发表时间：
2005-06
期刊：
Comput. Geosci.
影响因子：
--
作者：
G. Cooper;D. Cowan
通讯作者：
G. Cooper;D. Cowan
影响因子：
2.3
作者：
F. Speranza;L. Minelli;A. Pignatelli;M. Gilardi
通讯作者：
F. Speranza;L. Minelli;A. Pignatelli;M. Gilardi
DOI：
--
发表时间：
2013
期刊：
Chinese Journal of Geophysics
影响因子：
--
作者：
Wu Jian
通讯作者：
Wu Jian
DOI：
--
发表时间：
2009
期刊：
Chinese Journal of Geophysics
影响因子：
--
作者：
Liang Yong
通讯作者：
Liang Yong