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

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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

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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

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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

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References(27)

References

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