地震地磁观测与研究2017，Vol.38Issue(3)：18-22,5.DOI:10.3969/j.issn.1003-3246.2017.03.004
河北北部地区平均波速比分析
The average wave velocity ratio determination and correlation analysis in northern Hebei
摘要
Abstract
Based on seismic phase time reports from Hebei Digital Seismic Network from January 2006 to October 2015, the average velocity ratio in the north of Hebei Province was calculated by adopting least square method. By analyzing the time serie variation behavior of the velocity ratio before the significant seismic of the study area, the obvious normal-low anomaly-recovery-abnormal evolution characteristic was presented before earthquake. This result provides useful reference information for the precursory change study of seismic velocity.关键词
波速比/前兆变化/最小二乘法Key words
velocity ratio/precursory change/least square method引用本文复制引用
刘静,张环曦,尹宏伟,董博,张蕾,李瑞卿..河北北部地区平均波速比分析[J].地震地磁观测与研究,2017,38(3):18-22,5.基金项目
河北省地震局青年基金项目(批准号:DZ20150423065) （批准号:DZ20150423065）
