选取河北地震台网2008—2016年记录的1 714个ML≥0.1地震，采用分区量规函数（新量规函数）重新计算并对比分析ML震级。实际结果表明，采用新旧量规函数计算得到的近震震级一致性较好，ML震级偏差在±0.1的地震共1 556个，约91.8%，且抽样地震近震震级均值和标准方差更小。因此，使用分区量规函数，河北地震台网近震震级测定精度和适用性更好。
The 1 714 ML ≥ 0.1 earthquakes recorded by Hebei Seismic Network for 9 years were selected and the near-shock magnitudes were recalculated and compared using the old and new gauge functions, respectively. The actual measurement results show that the near-earthquake magnitudes obtained by the old and new gauge functions are in good agreement, and the number of earthquakes with ML magnitude deviation of ±0.1 are 1 556, which is approximately 91.8% of all earthquakes. The mean value and stander deviation of magnitudes of sampled earthquakes are smaller, so the usage of a zoning gauge function in Hebei District Network can improve the accuracy and availability of the near-magnitude magnitude.
2018,39(3): 10-15 收稿日期：2017-01-22
DOI：10.3969/j.issn.1003-3246.2018.03.002
基金项目：测震台网青年骨干培养专项（项目编号：20160503）
作者简介：贾炯(1975-),女,河北省辛集人,高级工程师,主要从事地震监测工作
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