利用信噪分离方法提高大地电磁张量阻抗估算质量

崔金岭; 邓明; 景建恩; 张启升; 陈凯; 王猛

doi:10.3799/dqkx.2014.047

Volume 39 Issue 4

Apr. 2014

Turn off MathJax

Article Contents

Article Navigation > Earth Science > 2014 > 39(4): 492-498

Cui Jinling, Deng Ming, Jing Jian'en, Zhang Qisheng, Chen Kai, Wang Meng, 2014. A Signal-Noise Separation Method for Magnetotelluric Impedance Tensor Estimate Improvement. Earth Science, 39(4): 492-498. doi: 10.3799/dqkx.2014.047

Citation:

Cui Jinling, Deng Ming, Jing Jian'en, Zhang Qisheng, Chen Kai, Wang Meng, 2014. A Signal-Noise Separation Method for Magnetotelluric Impedance Tensor Estimate Improvement. Earth Science, 39(4): 492-498. doi: 10.3799/dqkx.2014.047

Citation:

PDF( 626 KB)

A Signal-Noise Separation Method for Magnetotelluric Impedance Tensor Estimate Improvement

doi: 10.3799/dqkx.2014.047

Cui Jinling^{1, 2
,},
Deng Ming^{1, 2
,
,},
Jing Jian'en^{1, 2},
Zhang Qisheng^{1, 2},
Chen Kai^{1, 2},
Wang Meng^{1, 2}

1.
School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China
2.
Key Laboratory of Geo-detection of Ministry of Education, Beijing 100083, China

Received Date: 2013-08-25
Publish Date: 2014-04-15

Abstract

Abstract

It is difficult to estimate precise magnetotelluric (MT) impedance tensor in high correlated noise areas. In order to approximate MT impedance tensor, we use remote sites which contain relatively lower correlated noise to compute separation tensor by using Robust least square method. The MT data in three sites which are contaminated by higher and lower correlated noises are processed using signal-noise separation method. The results show that it can separate higher correlated noise and get much smoother apparent resistivity and phase curves than those obtained by using Robust least square method and remote reference method. It is concluded that signal-noise separation method is efficient for much more precise MT impedance tensor.
- signal-noise separation,
- magnetotellurics,
- impedance tensor,
- geophysics

FullText(HTML)

References(27)

References

Chave, A.D., Thomson, D.J., 2004. Bounded Influence Magnetotelluric Response Function Estimation. Geophysical Journal International, 157: 988-1006. doi: 10.1111/j.1365-246X.2004.0203.x

Chen, J., Heincke, B., Jegen, M., et al., 2012. Using Empirical Mode Decomposition to Process Marine Magnetotelluric Data. Geophysical Journal International, 190: 293-309. doi: 10.1111/j.1365-246X.2012.05470x

Dmitriev, V.I., Berdichevsky, M.N., 1979. The Fundamental Model of Magnetotelluric Sounding. Proceedings of the IEEE, 67(7): 1034-1044. doi: 10.1109/PROC.1979.11386

Egbert, G.D., 1997. Robust Multiple-Station Magnetotelluric Data Processing. Geophysical Journal International, 130: 475-496. doi: 10.1111/j.1365-246X.1997.tb05663.x

Egbert, G.D., Booker, J.R., 1986. Robust Estimation of Geomagnetic Transfer Functions. Geophysical Journal International, 87: 173-194. doi: 10.1111/j.1365-246X.1986.tb04552.x

Gamble, T.D., Goubau, W.M., Clarke, J., 1979. Magnetotellurics with a Remote Magnetic Reference. Geophysics, 44(1): 53-68. doi: 10.1190/1.1440923

Garcia, X., Jones, A.G., 2008. Robust Processing of Magnetotelluric Data in the AMT Dead Band Using the Continuous Wavelet Transform. Geophysics, 73(6): F223-F234. doi: 10.11901/1.2987375

Iliceto, V., Santarato, G., 1999. On the Interference of Man-Made EM Fields in the Magnetotelluric 'Dead Band'. Geophysical Prospecting, 47(5): 707-719. doi: 10.1046/j.1365-2478.1999.00153.x

Jones, A.G., Chave, A.D., Egbert, G., et al., 1989. A Comparison of Techniques for Magnetotelluric Response Function Estimation. Journal of Geophysical Research, 94(B10): 201-213. doi: 10.1029/JB094iB10p14201

Larsen, J.C., Mackie, R., Manzella, A., et al., 1996. Robust Smooth Magnetotelluric Transfer Functions. Geophysical Journal International, 124(3): 801-819. doi: 10.1111/j.1365-246X.1996.tb05639.x

Law, L.K., Auld, D.R., Booker, J.R., 1980. A Geomagnetic Variation Anomaly Coincident with the Cascade Volcanic Belt. Journal of Geophysical Research, 85(B10): 5297-5302. doi: 10.1029/JB085iB10p05297

Li, T.L., Weng, A.H., Lin, J., 1999. Robust Estimation of Electromagnetic Function for Marine Magnetotelluric Data. Journal of Changchun University of Science and Technology, 29(1): 81-83(in Chinese).

Liu, J.X., Yan, J.B., He, J.S., et al., 2003. Robust Estimation Method of Sea Magnetotelluric Impedance Based on Correlative Coefficient. Chinese Journal of Geophysics, 46(2): 241-245 (in Chinese with English abstract). doi: 10.1002/cjg2.349/abstract

Oettinger, G., Haak, V., Larsen, J.C., 2001. Noise Reduction in Magnetotelluric Time-Series with a New Signal-Noise Separation Method and Its Application to a Field Experiment in the Saxonian Granulite Massif. Geophysical Journal International, 146(3): 659-669. doi: 10.1046/j.1365-246X.2001.00473.x

Tang, J.T., Li, J., Xiao, X., et al., 2012. Mathematical Morphology Filtering and Noise Suppression of Magnetotelluric Sounding Data. Chinese Journal of Geophysics, 55(5): 1784-1793(in Chinese with English abstract).

Touran, A., Wiser, E.P., 1992. Monte Carlo Technique with Correlated Random Variables. Journal of Construction Engineering and Management, 118(2): 258-272. doi: 10.1061/(ASCE)0733-9364(1992)118:2(258)

Wang, J.Y., Xu., Y.X., Hu, X.Y., et al., 1998. Methods and Advances for Estimation of Magnetotelluric Response Function Abroad. Earth Science Frontiers, 5(1-2): 217-222(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DXQY802.006.htm

Wei, W.B., Tan, H.D., Jin, S., et al., 2002. Conductivity Structure of Lithosphere in Central North China: Magnetotelluric Study of Yingxian-Shanghe Profile. Earth Science—Journal of China University of Geosciences, 27(5): 645-660(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DQKX200205027.htm

Xu, Y.X., Wang, J.Y., 2000. Power Spectrum Estimation for Magnetotelluric Signal Based on Continuous Wavelet Transform. Chinese Journal of Geophysics, 43(5): 677-683(in Chinese with English abstract). http://www.researchgate.net/publication/297984677_Power_spectrum_estimation_for_magnetotelluric_signal_based_on_continuous_wavelet_transform

Ye, G.F., Jin, S., Wei, W.B., et al., 2007. Research of Conductive Structure of Crust and Upper Mantle beneath the South-Central Tibetan Plateau. Earth Science—Journal of China University of Geosciences, 32(4): 491-498(in Chinese with English abstract). http://qikan.cqvip.com/Qikan/Article/Detail?id=26247312

李桐林, 翁爱华, 林君, 1999. 海洋环境中大地电磁测深阻抗的Robust估计. 长春科技大学学报, 29(1): 81-83. https://www.cnki.com.cn/Article/CJFDTOTAL-CCDZ901.017.htm

柳建新, 严家斌, 何继善, 等, 2003. 基于相关系数的海底大地电磁阻抗Robust估算方法. 地球物理学报, 46(2): 241-245. doi: 10.3321/j.issn:0001-5733.2003.02.018

汤井田, 李晋, 肖晓, 等, 2012. 数学形态滤波与大地电磁噪声压制. 地球物理学报, 55(5): 1784-1793. https://www.cnki.com.cn/Article/CJFDTOTAL-DQWX201205037.htm

王家映, 徐义贤, 胡祥云, 等, 1998. 国外大地电磁响应函数估计方法. 地学前缘, 5(1-2): 217-222. https://www.cnki.com.cn/Article/CJFDTOTAL-DXQY802.006.htm

魏文博, 谭捍东, 金胜, 等, 2002. 华北中部岩石圈电性结构-应县-商河剖面大地电磁测深研究. 地球科学——中国地质大学学报, 27(5): 645-650. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200205027.htm

徐义贤, 王家映, 2000. 基于连续小波变换的大地电磁信号谱估计方法. 地球物理学报, 43(5): 677-683. doi: 10.3321/j.issn:0001-5733.2000.05.011

叶高峰, 金胜, 魏文博, 等, 2007. 西藏高原中南部地壳与上地幔导电性结构. 地球科学——中国地质大学学报, 32(4): 491-498. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200704009.htm

Relative Articles

Supplements(0)

Cited By

Proportional views

Proportional views

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Figures(7)

Get Citation

PDF

XML

Article views (3317) PDF downloads(499)

A Signal-Noise Separation Method for Magnetotelluric Impedance Tensor Estimate Improvement

doi: 10.3799/dqkx.2014.047

Abstract

References

Proportional views

Catalog

通讯作者: 陈斌, bchen63@163.com

Proportional views

Export File

Citation

Format

Content