摘要
本文采用《江西测震台网地震观测报告》,选取2007年10月~2015年12月所记录的499次M_L≥1.5地震事件,对各子台测定震级与台网平均震级偏差进行定量的统计分析,从震级偏差频次分布、量规函数、台基、方位角等方面分析产生震级偏差的原因。在对量规函数和台基进行校正后,震级偏差绝对值在0.2以内的样本数达到了68.6%,并给出了适合江西地区的量规函数和台基校正值。
To calculate the deviations between single station magnitudes and average ones by the statistical methods,the paper selected 499 earthquake events with ML1.5 recorded on Jiangxi Digital Seismic Network from October 2007 to December 2015. In terms of the frequency distribution,calibration function,station foundation and azimuth,we analyzed the causes of magnitude deviation. After the correction of the calibration function and the station foundation,the absolute values of magnitude deviation of 68.6 percent samples are within 0.2. And we obtained the corrected values of calibration function and station foundation for the Jiangxi region.
作者
项月文
陈浩
肖孟仁
曾文敬
肖健
Xiang Yuewen;Chen Hao;Xiao Mengren;Zeng Wenjing;Xiao Jian(Jiangxi Earthquake Agency, Nanchang 330096,Chin)
出处
《中国地震》
北大核心
2018年第1期122-132,共11页
Earthquake Research in China
基金
中国地震局2015年度测震台网青年骨干培养专项(20150416)资助
关键词
江西测震台网
震级偏差
量规函数
台基
方位角
Jiangxi Digital Seismic Network
Magnitude deviation
Calibration function
Station foundation
Azimuth
