基于EMD的中国大陆强震活动特征分析

EARTHQUAKE ›› 2007, Vol. 27 ›› Issue (3): 57-62.

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Analysis on Characteristics of Strong Earthquake Activity in Chinese Mainland Based on Empirical Mode Decomposition (EMD) Method

LI Zhi-xiong¹, ZHU Hang³, LIU Jie³, ZENG Gang-ping¹, QIU Xue-lin⁴

1. Earthquake Administration of Hainan Province, Haikou 570203;
2. Earthquake Administration of Sichuan Province, Chengdu 610041;
3. China Earthquake Networks Center, CEA, Beijing 100036;
4. South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China

Received:2007-03-13 Revised:2007-04-06 Online:2007-07-31 Published:2021-10-29

Abstract

Abstract: The time series of annual maximum earthquakes in Chinese mainland was decomposed systematically based on Empirical Mode Decomposition (EMD) method, the five Intrinsic Mode Function (IMF) components and the trend component were obtained. The correlation was analyzed between the different period factors of the IMF and the environment factors such as the variation of the earth rotation, the sunspot activity, and tidal motion and so on. The physical mechanism of the IMF components and its impact on the earthquake activity in Chinese mainland was preliminarily discussed.

Key words: EMD Method, Activity of strong earthquakes, Earth rotation, Sunspot, Tide movement

CLC Number:

P315.72

LI Zhi-xiong, ZHU Hang, LIU Jie, ZENG Gang-ping, QIU Xue-lin. Analysis on Characteristics of Strong Earthquake Activity in Chinese Mainland Based on Empirical Mode Decomposition (EMD) Method[J]. EARTHQUAKE, 2007, 27(3): 57-62.

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Analysis on Characteristics of Strong Earthquake Activity in Chinese Mainland Based on Empirical Mode Decomposition (EMD) Method

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