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作者: Cai Jianhua 文題: Magnetotelluric Response Function Estimation Based on Hilbert–Huang Transform 期刊名: Pure and Applied Geophysics: 期刊年份: 2013 卷(期),起止頁碼: Volume 170, Issue 11 ,Page 1899-1911 |
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FN Thomson Reuters Web of Knowledge VR 1.0 PT J AU Cai, JH AF Cai, Jian-hua TI Magnetotelluric Response Function Estimation Based on Hilbert-Huang Transform SO PURE AND APPLIED GEOPHYSICS LA English DT Article DE Magnetotelluric data; Hilbert-Huang transform; marginal spectrum; response function estimation ID EMPIRICAL MODE DECOMPOSITION AB Magnetotelluric (MT) data series are non-stationary random signals that do not meet the basic requirements of conventional methods based on the Fourier transform. To minimize the estimation bias errors brought about by the non-stationary characteristics of MT data, a new method, based on the Hilbert-Huang transform (HHT), is proposed for the first time for estimating the MT response functions from a time series of electromagnetic field variations. With the HHT method, the amplitude of data series are expressed as a function of frequency and time and then response functions are estimated statistically from the time-frequency spectrum. Mathematical model and calculation processes are introduced and some simulated data are analyzed to verify the correctness of the method. Finally, the measured MT data is facilitated by applying the HHT to assess the ability of HHT method to quantify meaningful geologic information. C1 Hunan Univ Arts & Sci, Dept Phys & Elect, Changde 415000, Peoples R China. RP Cai, JH (reprint author), Hunan Univ Arts & Sci, Dept Phys & Elect, Changde 415000, Peoples R China. EM cjh1021cjh@163.com FU State 863 Project of China [Project No: 2006AA06Z10]; Hunan Provincial Natural Science Foundation of China [Project No: 12JJ4034]; 11th Five-year Plan for Key Construction Academic Subject (Optics) of Hunan Province FX The authors wish to acknowledge the assistance and support of all those who contributed to our effort to enhance and develop the described system, and to express their appreciation for the financial support provided by the State 863 Project of China (Project No: 2006AA06Z10) and by Hunan Provincial Natural Science Foundation of China (Project No: 12JJ4034) and by the Fund of the 11th Five-year Plan for Key Construction Academic Subject (Optics) of Hunan Province. NR 18 TC 0 Z9 0 PU SPRINGER BASEL AG PI BASEL PA PICASSOPLATZ 4, BASEL, 4052, SWITZERLAND SN 0033-4553 J9 PURE APPL GEOPHYS JI Pure Appl. Geophys. PD NOV PY 2013 VL 170 IS 11 BP 1899 EP 1911 DI 10.1007/s00024-012-0620-3 PG 13 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 240KB UT WOS:000326093600014 ER EF |

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