首页|期刊导航|中国地震研究(英文版)|The Time-Frequency Energy Attenuation Factor and Its Application on the Basis of Gauss Linear Frequency-Modulated Continuous Wavelet Transform
中国地震研究(英文版)2004，Vol.18Issue(1)：42-53,12.
The Time-Frequency Energy Attenuation Factor and Its Application on the Basis of Gauss Linear Frequency-Modulated Continuous Wavelet Transform
The Time-Frequency Energy Attenuation Factor and Its Application on the Basis of Gauss Linear Frequency-Modulated Continuous Wavelet Transform
摘要
Abstract
Based on the Gauss linear frequency-modulated wavelet transform, a new characteristic index is presented, namely time-frequency energy attenuation factor which can reflect the difference features of waveform in earthquake focus mechanism, wave traveling path and its attenuation characteristics in focal area or near field. In order to test its validity, we select the natural earthquakes and explosion or collapse events whose focus mechanisms vary obviously, and some natural earthquakes located at the same site or in a very small area. The study indicates that the time-frequency energy attenuation factors of the natural earthquakes are obviously different with that of explosion or collapse events, and the change of the time-frequency energy attenuation factors is relatively stable for the earthquakes under the normal seismicity background. Using the above-mentioned method, it is expected to offer a useful criterion for strong earthquake prediction by continuous earthquake observation.关键词
Continuous wavelet transform/Time-frequency energy attenuation factor/The space difference characteristics/The time change characteristicsKey words
Continuous wavelet transform/Time-frequency energy attenuation factor/The space difference characteristics/The time change characteristics引用本文复制引用
Liu Xiqiang,Shen Ping,Li Hong,Shan Changlun,Ji Aidong,Zhang Ping,Cai Mingjun..The Time-Frequency Energy Attenuation Factor and Its Application on the Basis of Gauss Linear Frequency-Modulated Continuous Wavelet Transform[J].中国地震研究(英文版),2004,18(1):42-53,12.基金项目
This project was sponsored by the Science and Technology Key Project during the "Tenth Five-Year Plan" (2001BA601B02-03-06) and the Joint Earthquake Science Foundation of China Earthquake Administration (102035), China. （2001BA601B02-03-06）
