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| An analysis of the experimental result of MT remote reference technique in strong electromagnetic interference region |
| Zhi-Min XU1,2, Hui-Cui XIN3, Xin-Ping TAN1, Zhang-Jian XU1 |
1. Northwest Research Institute of Engineering investigations and design, Xi'an 710003, China
2. Institute of Geosciences and Info Physics, Central South University, Changsha 410083, China
3. Shaanxi Energy Institute, Xianyang 712000, China |
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Abstract The industrial interference in Tongchuan City survey area is strong, where stratigraphic sedimentary types are complex, the lithology varies remarkably, the terrain is fluctuating, and the gully and the ridge are crisscross. The audiomagnetotelluric method (AMT) is characterized by a single point of measurement, great detection depth, high horizontal resolution and other technical advantages. At the same time, the magnetotelluric remote reference technology can suppress random noise, restore the "dead band" data, and improve the magnetotelluric data quality. In order to study the application effect of magnetotelluric remote reference technology in the urban strong electromagnetic interference environment, the authors constructed an audio magnetotelluric profile in Tongchuan investigation area. The nonlinear conjugate gradient (NLCG) method was used to carry out the data inversion and data analysis. The results show that the application of remote reference technology to the processing of magnetotelluric data can effectively improve the quality of noise data, and the inversion results are more consistent with the geological data.
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Received: 02 May 2017
Published: 04 June 2018
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| [1] |
陈乐寿, 王光锷 . 大地电磁测深法[M]. 北京: 地质出版社, 1990.
|
| [2] |
考夫曼, 凯勒 . 大地电磁测深法[M]. 刘国栋, 译. 北京: 地震出版社, 1987.
|
| [3] |
陈高, 金祖发, 马永生 , 等. 大地电磁测深远参考技术及应用效果[J]. 石油物探, 2001,40(3):112-117.
|
| [4] |
Gamble T D, Goubau W M, Clarke J . Magnetotelluric data analysis. Removal of Bias[J]. Geophyics, 1978,43:959-968.
|
| [5] |
Ritter O, Junge A, Dawes J K . New equipment and processing for magnetotelluric remote reference bservations[J]. Geophys.J.Int, 1998,132:535-548.
|
| [6] |
Goubau W M, Maxton P M . Noise correlation lengths in remote reference magnetotellurics[J]. Geophysics, 1984,49(4):433-438.
|
| [7] |
陈清礼, 胡文宝, 苏朱刘 , 等. 长距离远参考大地电磁测深试验研究[J]. 石油地球物理勘探, 2002,37(2):145-148.
|
| [8] |
黄哲 . 大地电磁测深远参考处理原理及效果分析[J]. 地震地质, 2001,23(2):212-216.
|
| [9] |
孙洁, 普光文, 白登海 , 等. 大地电磁测深资料的噪声干扰[J]. 物探与化探, 2000,24:119-127.
|
| [10] |
汤井田, 李晋, 肖晓 , 等. 数学形态滤波与大地电磁噪声压制[J]. 地球物理学报, 2012,55(5):1784-1793.
|
| [11] |
汤井田, 徐志敏, 肖晓 , 等. 庐枞矿集区大地电磁测深强噪声的影响规律[J]. 地球物理学报, 2012,55(12):4147-4159.
|
| [12] |
徐志敏, 汤井田, 强建科 . 矿集区大地电磁强干扰类型分析[J]. 物探与化探, 2012,36(2):214-219.
|
| [13] |
徐志敏, 辛会翠, 吕扶君 . 庐枞矿集区大地电磁法的远参考效果研究[J]. 地球物理学进展, 2014,29(4):1822-1830.
|
| [14] |
严良俊, 胡文宝, 陈清礼 , 等. 远参考MT方法及在南方强干扰地区的应用[J]. 江汉石油学院学报, 1998,20(4):34-38.
|
| [15] |
杨生, 鲍光淑, 张全胜 . 远参考大地电磁测深法应用研究[J]. 物探与化探, 2002,26(1):27-31.
|
| [16] |
张全胜, 杨生 . 大地电磁测深资料去噪方法应用研究[J]. 石油物探, 2002,41(4):493-499.
|
| [17] |
Rodi W, Mackie R L . Nonlinear conjugate gradients algorithm for 2-D magnetotelluric inversion. Geophysics, 2001,66(1):174-187.
|
|
|
|
