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地震 ›› 2006, Vol. 26 ›› Issue (4): 37-44.

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定位子台网的选取对定位结果影响研究

赵英萍1, 高景春1, 刘丽1, 毛国良1, 常亮1, 季爱东2, 王树兴3, 赵明淳1   

  1. 1.河北省地震局, 河北 石家庄 050021;
    2.山东省地震局, 山东 济南 250014;
    3.河北省文安地震台, 河北 文安 065800
  • 收稿日期:2006-03-20 修回日期:2006-06-06 发布日期:2021-11-01
  • 作者简介:赵英萍(1968-), 女, 河北井陉人, 工程师, 主要从事地震监测等研究。
  • 基金资助:
    河北省数字台网地震速报技术研究子项; 河北省地震局项目

Study on the influence of subarray selection on the locating result

ZHAO Ying-ping, GAO Jing-chun, LIU Li, MAO Guo-liang, CHANG Liang, JI Ai-dong, WANG Shu-xing, ZHAO Ming-chun   

  1. 1. Earthquake Administration of Hebei Province, Shijiazhuang 050021, China;
    2. Earthquake Administr- ation of Shandong Province, Jinan 250014, China;
    3. Seismic Station of Wenan, Wenan 065800, Hebei Province, China
  • Received:2006-03-20 Revised:2006-06-06 Published:2021-11-01

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摘要： 选取了河北及邻区58个不同区域的地震, 分析“定位子台网”分布对地震定位精度的影响, 研究“定位子台网”的选取规则。 分别探讨了三种台站分布情况下定位偏差、 水平误差、 拟合残差随空隙角、 近台距离、 远台距离的变化; 定位偏差以及水平误差与拟合残差的关系。 结果显示, 速报时选择7～9个分布相对合理的“定位子台网”参加定位结果比较好, 使用水平误差估计定位结果质量比较适合。

关键词: 定位子台网, 台站分布, 定位偏差, 水平误差, 拟合残差

Abstract: Selecting 58 earthquakes occurred in Hebei Province and adjacent regions, rules of subarray selection are studied based on analyzing the influence of station distributions on the accuracy of locating result. The locating deviation, horizontal error, fitting residual with clearance angle, variation with near station and far station, and relation of locating deviation with horizontal error and fitting residual were discussed separately. The results show that it is suitable to select 7 to 9 stations for earthquake locating in rapid report. It is relatively suitable to evaluate the quality of the locating result with horizontal error.

Key words: Locating subarray, Station distribution, Locating deviation, Horizontal error, Fitting residual

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