| 利用近场加速度记录确定近震震源参数的研究 |
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| 引用本文： | 刘爱文,李沙白.利用近场加速度记录确定近震震源参数的研究[J].地震工程与工程振动,1998,18(4):15-22. |
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| 作者姓名： | 刘爱文 李沙白 |
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| 作者单位： | 哈尔滨工程大学建筑工程系，中国哈尔滨 15000l |
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| 摘 要： | 本文对利用强震近场加速度记录确定时，空、强三个完整的震源参数。文中给出一种利用计算机自动识别地震记录的Ｐ波初动到时和Ｓ波震相到的算法。根据新近发表的Ｗｏｏｄ－Ａｎｄｅｒｓｏｎ地震仪器的最新参数，修牍正唐山地区量规函数。利用唐 山数字震观测台阵得到的近场加速度数据，计算了１０次地震的震源位置和震级，并对定位误差进行了综合分析，将强震台网测定的震源参数与地震台
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| 关 键 词： | 近场加速度记录 震源参数 自动识别 地震 |
DETERMINATION OF LOCAL-EARTHQUAKE PARAMETERS USING NEAR-FIELD STRONG-MOTION ACCELEROGRAMS |
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| Liu Aiwen Li Shabai.DETERMINATION OF LOCAL-EARTHQUAKE PARAMETERS USING NEAR-FIELD STRONG-MOTION ACCELEROGRAMS[J].Earthquake Engineering and Engineering Vibration,1998,18(4):15-22. |
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| Authors: | Liu Aiwen Li Shabai |
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| Abstract: | The objective of this paper is to investigate the determination of the origin time source coordinates and magnitude of a local earthquake using near- field strong - motion accelerograms. The paper provides a method for personal computers automatically detecting P wave arrivals and S wave arrivals on seismic traces and revises the calibration function of Tangshan region based on the Wood - Anderson seismogragh parameters published recently. The epicenters and magnitudes of 10 earthquakes are determined using the accelerograms obtained by a strong - motion digital accelerograph array in Tangshan region. After synthetically analyzing the errors of earthquake-locating results it is shown that favorable results can be obtained by using P arrivals and S- P intervals of strong motion records together. Comparing earthquake - source parameters with those provided by seismic networks the results of the both show few differences in general and the epicenters which are located by the strong - motion data are adjacent to the causative defaults. |
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| Keywords: | near-field accelerogram local - earthquake parameters automatically-detected arrivals |
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