| 三分向数据震相的自动识别 |
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| 引用本文： | 李慧婷,黄文辉.三分向数据震相的自动识别[J].华南地震,2000,20(4):46-53. |
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| 作者姓名： | 李慧婷 黄文辉 |
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| 作者单位： | 广东省地震局,广东广州 510070 |
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| 摘 要： | 利用三分向地震数据，提出了一种自动检测Ｐ波和Ｓ波初至的算法。此算法组合使用了短时窗检测器ＤＳｐ和长时窗ＤＢｐ检测器，具有短时窗的较高精度和长时窗较低的误触发率。应用广东、福建和云南省的地震数据进行测试，结果表明：自动检测具有可靠的精度，地方震和近震Ｐ波到时误差小于０．２ｓ的超过８４％；Ｓ波到时误差小于０．５ｓ的超过７４％。
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| 关 键 词： | 震相识别 地震波 三分向波形数据 极化性 P波 |
| 文章编号： | 1001-8662(2000)04-0046-08 |
| 修稿时间： | 2000年6月12日 |
Automatic identification of three-component seismic phase |
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| LI Hui ting,HUANG Wen hui.Automatic identification of three-component seismic phase[J].South China Journal of Seismology,2000,20(4):46-53. |
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| Authors: | LI Hui ting HUANG Wen hui |
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| Abstract: | An algorithm has been developed for automatic picking P-and S-phase of three-component seismic data. The method has the feature of higher accuracy in short time window and lower false alarm rate in long time window because it has combined short time window detector (DB p) and long time window detector (DS p). It has been tested by seismograms of GDDSN, FJDSN and YNDSN, and the result shows that the arrival time can be picked automatically and accurately.More than 84% examples have an error of less than 2s for P-phase of local and near earthquake, and more than 74% examples have an error of less 0 5s for S-phase arrival time. |
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| Keywords: | phase identification polarization three-component waveform data |
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