[1]王佳龙.音频大地电磁法TE、TM极化模式在基岩山区地热勘查中的应用[J].华东地质,2022,43(02):176-183.[doi:10.16788/j.hddz.32-1865/P.2022.02.005]
　WANG Jialong.Application of TE and TM polarization modes of audio magnetotelluric sounding method to geothermal exploration in bedrock mountainous areas[J].East China Geology,2022,43(02):176-183.[doi:10.16788/j.hddz.32-1865/P.2022.02.005]
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音频大地电磁法TE、TM极化模式在基岩山区地热勘查中的应用()
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《华东地质》[ISSN:2096-1871/CN:32-1865/P]

卷:
43
期数:
2022年02期
页码:
176-183
栏目:
基础地质
出版日期:
2022-06-23

文章信息/Info

Title:
Application of TE and TM polarization modes of audio magnetotelluric sounding method to geothermal exploration in bedrock mountainous areas
作者:
王佳龙1; 2
1. 湖南联智科技股份有限公司, 湖南长沙 410200;
2. 中国地质调查局南京地质调查中心, 江苏南京 210016
Author(s):
WANG Jialong1; 2
1. Hunan Lianzhi Technology Co., Ltd, Changsha 410200, Hunan, China;
2. Nanjing Center, China Geological Survey, Nanjing 210016, Jiangsu, China
关键词:
基岩山区; 音频大地电磁法; TE极化模式; TM极化模式; 低阻异常; 地热
Keywords:
bedrock mountainous area; Audio Magnetotelluric sounding; TE polarization mode; TM polarization mode; low resistance anomaly; geothermal
分类号:
P631.3P314.2
DOI:
10.16788/j.hddz.32-1865/P.2022.02.005
摘要:
在不同静态效应下,音频大地电磁法(Audio Magnetotelluric sounding,AMT) TE极化模式和TM极化模式视电阻率曲线具有不同特征。理论模型正演结果表明:TM极化模式受地形起伏影响相对较大;TE极化模式受地形起伏影响相对较小,在识别山区构造方面更具优势。实际应用案例中,通过对比同一剖面TE极化模式和TM极化模式的反演结果,结合地质与钻孔资料,发现TE极化模式与钻孔资料吻合较好,在识别山区构造带富水低阻异常方面异常清晰,效果显著。
Abstract:
The resistivity curves of TE and TM polarization modes of audio magnetotelluric method (AMT) have respective characteristics under different static effects. Theoretical forward modelling results show that TM polarization model is relatively strong influenced by topography, while TE polarization model is weakly affected, which is more advantageous in identifying mountain structures. In the practical application, it is found that TE polarization mode is in good agreement with the drilling data by comparing the inversion results of two polarization modes in the same cross-section, which is very clear and effective in identifying the low resistivity anomalies of water-rich areas in mountain tectonic belt.

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备注/Memo

备注/Memo:
收稿日期:2020-12-14;改回日期:2021-06-15。
基金项目:中国地质调查局项"福建省资源环境承载能力综合调查评价(编号:DD20190301)"项目资助。
作者简介:王佳龙,1991年生,男,工程师,学士,主要从事电磁法应用研究工作。Email:710636168@qq.com。
更新日期/Last Update: 1900-01-01