| 新疆乌恰2次5.1级地震加速度记录特征对比分析 |
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| 引用本文： | 张振斌,史勇军,吕桂林.新疆乌恰2次5.1级地震加速度记录特征对比分析[J].地震地磁观测与研究,2011,32(6):51-55. |
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| 作者姓名： | 张振斌 史勇军 吕桂林 |
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| 作者单位： | 中国乌鲁木齐830011 新疆维吾尔自治区地震局 |
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| 基金项目： | 新疆地震局青年科学基金项目 |
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| 摘 要： | 分析新疆乌恰两次5.1级地震4个强震台的强震动记录,第1次地震4个台记录卓越频率在4.25 Hz-13.59 Hz；第2次地震4个台记录卓越频率为2.45 Hz-3.61 Hz.从谱比曲线可以看出,2次地震在同一观测场地的场地效应基本相似,基岩台场地效应在高频部分有明显放大作用,土层场地在高频部分有明显的减小作用.
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| 关 键 词： | 加速度记录 场地效应 Nakamura方法 |
The comparative analysis of the characteristics of acceleration record based on two Ms 5.1 Wuqia earthquakes |
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| Zhang Zhenbin,Shi Yongjun,Lv Guilin.The comparative analysis of the characteristics of acceleration record based on two Ms 5.1 Wuqia earthquakes[J].Seismological and Geomagnetic Observation and Research,2011,32(6):51-55. |
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| Authors: | Zhang Zhenbin Shi Yongjun Lv Guilin |
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| Institution: | (Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, China) |
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| Abstract: | In this paper we analysis acceleration records of two Ms 5.1 earthquakes in Wuqia recorded by four strong motion stations. We found that primary frequency of the first earthquake is 4.25 Hz to 13.59 Hz, and primary frequency of the second earthquake is 2.45 Hz to 3.61 Hz. From the curve of spectrum, we find that the curves of two earthquakesr spectrum are basically similar on the same site and the field effect of high frequency is obviously en iarged on rock site, and is obviously decreased on soil site. |
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| Keywords: | acceleration records sit response Nakamura method |
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