| ??SSY???????????о???????????????????? |
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| 引用本文： | 张致伟,程万正,阮祥.??SSY???????????о????????????????????[J].大地测量与地球动力学,2008,28(5):27-33. |
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| 作者姓名： | 张致伟 程万正 阮祥 |
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| 作者单位： | 1. 中国地震局兰州地震研究所,兰州,730000
2. 四川省地震局预报研究所,成都,610041 |
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| 基金项目： | 国家自然科学基金，国家资助项目 |
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| 摘 要： | ??????????????????????SSY?????????????????2004??12??26????????????Ms8.7????2003??9??26???????????Ms8.0?????2003??9??27????ɡ??н???Ms7.9?????????????н???С??????????,??????????????????????????????SSY???????????????????????????????????????????е?С?????????????????????????????????????????Щ????????μ??
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| 关 键 词： | ?????? С???????? SSY?????? ?????? ??? |
ON OSCILLATION WAVES INDUCED BY GREAT FAR-FIELD EARTHQUAKE ITS SPECTRUM FROM SSY EXTENSOMETER DATA |
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| Zhang Zhiwei,Cheng Wanzheng,Ruan Xiang.ON OSCILLATION WAVES INDUCED BY GREAT FAR-FIELD EARTHQUAKE ITS SPECTRUM FROM SSY EXTENSOMETER DATA[J].Journal of Geodesy and Geodynamics,2008,28(5):27-33. |
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| Authors: | Zhang Zhiwei Cheng Wanzheng Ruan Xiang |
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| Institution: | 1)Earthquake Institute of Lanzhou ,China Earthquake Administration，Lanzhou 7300002)Earthquake Prediction Institute，Earthquake Administration of Sichuan Province, Chengdu 610041 |
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| Abstract: | On the basis of the observations of SSY quartz extensometers at Guza and Panzhihua Nanshan stations in Sichuan province, the oscillation wave trains excited by the Sumatra Ms8.7 earthquake on December 26, 2004 in Indonesia，the Hokkaido Ms8.0 earthquake on September 26, 2003 in Japan and the Ms7.9 earthquake on September 27, 2003 on the borders of Russia, Mongolia and China were decomposed by wavelet transform and the spectrum analysis were done, and the analysis results were compared with the usual observation records. The time of oscillation waves excited by great far field earthquake from SSY quartz extensometer observation data lags，several main frequency components of spectrum structure obtained by decomposing oscillation wave trains are in accordance with some modes of earth’s free oscillations. |
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| Keywords: | oscillation wave trains spectrum of wavelet components SSY extensometer great far-field earthquake spectrum structure |
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