| 921台湾集集地震近断层强震记录的基线校正 |
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| 引用本文： | 王国权,周锡元.921台湾集集地震近断层强震记录的基线校正[J].地震地质,2004,26(1):1-14. |
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| 作者姓名： | 王国权 周锡元 |
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| 作者单位： | 北京工业大学,北京,100022 |
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| 基金项目： | 国家自然科学基金 (5 0 1780 0 7)资助 |
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| 摘 要： | 分析了 92 1台湾集集地震近断层强震记录基线偏移的原因 ,指出强震仪的倾斜是导致近断层强震记录基线偏移的主要原因 ,并提出了相应的基线校正方法 ,比较好地消除了近断层强震记录的基线偏移。根据作者的研究 ,原始记录经基线初始化之后 ,基线偏移对反应谱在工程界最感兴趣的0 .1～ 6s周期范围内的影响是很小的 ,对PGA的影响也很小 ,但对PGV ,PGD和永久位移 (D -last)的影响则相当大。因此 ,对近断层强震记录进行基线校正具有重要的意义。文中所提出的基线校正方法 ,可应用于对 1999年土耳其地震及 92 1台湾集集地震余震产生的近断层强震记录和其他近断层强震记录的基线校正
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| 关 键 词： | 近断层强震记录 基线校正 永久位移 921台湾集集地震 |
| 文章编号： | 0253-4967(2004)01-0001-14 |
BASELINE CORRECTION OF NEAR FAULT GROUND MOTION RECORDINGS OF THE 1999 CHI-CHI, TAIWAN EARTHQUAKE |
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| WANG Guo-quan,ZHOU Xi-yuan.BASELINE CORRECTION OF NEAR FAULT GROUND MOTION RECORDINGS OF THE 1999 CHI-CHI, TAIWAN EARTHQUAKE[J].Seismology and Geology,2004,26(1):1-14. |
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| Authors: | WANG Guo-quan ZHOU Xi-yuan |
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| Abstract: | The Chi-Chi earthquake firstly supplied us unprecedented near fault recordings and made it possible to study deeply the characteristics of near fault ground motion. However, there are consider~able offsets of baseline of the near fault accelerograms obtained in this event. The reasons of the offset of baseline are more complex than those occurred in other near field recordings with farther fault distance. Therefore, general baseline correction schemes for near field recordings, such as the methods of BAP (C |
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| Keywords: | Chi-chi earthquake near fault ground motion recordings baseline correction permanent displacement |
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