| 小波变换在东北地震趋势分析中的应用 |
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| 引用本文： | 孙文福,张国生.小波变换在东北地震趋势分析中的应用[J].东北地震研究,2006,22(3):33-37. |
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| 作者姓名： | 孙文福 张国生 |
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| 作者单位： | 1. 辽宁省地震局,辽宁,沈阳,110034
2. 通化地震台,吉林,通化,134000 |
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| 摘 要： | 本文在多年对东北地震大形势研究基础上,根据1900年以来东北地区地震目录资料,按年最大震级、地震频度和地震活动度分别建立三个时间序列f(t),利用离散小波变换对其进行分解,结果发现三个序列的小波变换细节系数均显示平均约20年周期的时序特征,并与该区地震活跃期符合得较好。依此,对该区地震活动发展趋势作了预测,认为当前地震活跃期大约在2008年结束。
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| 关 键 词： | 小波变换 时间序列 地震趋势 |
| 文章编号： | 1004-2865（2006）03-0033-05 |
| 收稿时间： | 2006-09 |
| 修稿时间： | 2006年9月1日 |
APPLICATION OF WAVELET TRANSFORM TO ANALYSIS OF EARTHQUAKE TREND IN NORTHEAST CHINA AREA |
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| SUN Wen-fu,ZHANG Guo-sheng.APPLICATION OF WAVELET TRANSFORM TO ANALYSIS OF EARTHQUAKE TREND IN NORTHEAST CHINA AREA[J].Seismological Research of Northeast China,2006,22(3):33-37. |
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| Authors: | SUN Wen-fu ZHANG Guo-sheng |
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| Institution: | 1. Earthquake Administration of Liaoning Province, Liaoning Shenyang 110034, China;2. Tonghua Seismic Station Jilin Tonghua 134000, China |
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| Abstract: | On the basis of analysis about great situation of NE China earthquakes for more years,three seismic time sequences with respect to annual maximal magnitude,earthquake frequency and seismicity measure have been established,respectively,according to the earthquake catalogue in the area since 1900.By means of discrete wavelet transform method the result shows that all detail coefficients of wavelet transform in respect of three time sequences have period characteristic with 20 years.It coincides with seismic active period in the area.A prediction of seismicity trend based on the result is as follows: the seismic active period at present will be over in about 2008. |
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| Keywords: | wavelet transform time sequence earthquake trend |
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