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《Platean Earthquake Research》 1999-01
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VARIATION OF SPECTRAL STRUCTURE BEFORE AND AFTER TIANZHU EARTHQUAKE

Xu Kangsheng;Zhou Zhiyu(Lanzhou Institute of Seismology,CSB, Lanzhou 730000)Li Ying(Observatory of Lanzhou Institute of Seismology,CSB,Lanzhou 730046)  
Using Tianzhu earthquake data, the authors have analyzed the variation of frequency-spectrum structure before the Tianzhu earthquake and the aftershock by the method of the Largest entropy spectrum whose resolution is higher than the common frequency -spectrum analysis, and they try to get the geophysical information for the prediction before the earthquake.
【CateGory Index】: P315.02
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【References】
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1 XU Kang sheng (Lanzhou Institute of Seismology,CSB,Lanzhou 730000,China);TIME-FREQUENCY ANALYSIS OF THE EARTHQUAKE SIGNALS[J];Northwestern Seismological Journal;2000-04
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9 ZHAO Zhi-jun (Department of Special Technology Basis Information Engineering School Beijing Broadcasting Institute,Beijing 100024 P.R.China);Padding Zero' s Effect on Finite Samples' Spectrum and DFT[J];Journal of Beijing Broadcasting Institute;2004-01
10 YANG Long-xin,XIONG Wei-xin,LI Pei(ECDAV,Comunication University of China,Beijing 100024,China);The Design of Generation of OFDM Module for DAM[J];Journal of Beijing Broadcasting Institute;2005-03
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1 Li Donghui,Liu Yong,Wang Bin(School of Electrical Engineering & Automation,Tianjin University,Tianjin 300072,China);Real-time Detecting System for Microseism Based on LabVIEW[J];Computer Measurement & Control;2008-01
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