王丽艳, 刘瑞丰, 杨辉. 2016: 全国分区地方性震级量规函数的研究. 地震学报, 38(5): 693-702.
引用本文: 王丽艳, 刘瑞丰, 杨辉. 2016: 全国分区地方性震级量规函数的研究. 地震学报, 38(5): 693-702.
Wang Liyan, Liu Ruifeng, Yang Hui. 2016: Calibration function of local magnitude for different regions in China. Acta Seismologica Sinica, 38(5): 693-702.
Citation: Wang Liyan, Liu Ruifeng, Yang Hui. 2016: Calibration function of local magnitude for different regions in China. Acta Seismologica Sinica, 38(5): 693-702.

全国分区地方性震级量规函数的研究

Calibration function of local magnitude for different regions in China

  • 摘要: 基于1973—2002年全国31个省级地震台网的地震观测资料,通过震级残差统计分析方法计算了单台震级的偏差和标准差,进而得到了东北与华北、华南、西南、青藏和新疆等5个区域的地方性震级量规函数及其使用范围.实际地方性震级测定结果表明,使用新的量规函数较我国目前使用的短周期仪器量规函数所测定的地方性震级的标准差小,这说明使用新的量规函数能够提高地方性震级的测定精度.

     

    Abstract: The statistical analysis method of the magnitude residuals is used to calculate the deviation and standard deviation of local magnitudes for single station based on the seismic observation data from all the 31 provincial seismological networks of China during 1973—2002. The local magnitude calibration functions are established in Northeast-North China, South China, Southwest China, Qinghai-Xizang and Xinjiang regions, and their usage ranges are defined. The local magnitude determination results in practice show that the standard deviations of local magnitude become smaller by using the new calibration functions than the current ones of short-period instrument, suggesting that the new calibration functions can raise the measurement accuracy of local magnitude.

     

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