地震地磁观测与研究2016，Vol.37Issue(4)：6-10,5.DOI:10.3969/j.issn.1003-3246.2016.04.002
2012年唐山ML 5.1地震S波分裂研究
S wave splitting Application ofML5.1 earthquake in Tangshan
摘要
Abstract
The S wave splitting parameters is calculated using the digital seismic data of Tangshan ML5.1 earthquake aftershock in 2012 recorded at Douhe Seismic Station. The results showed that:①the fast S-wave polarization directions of aftershocks are mainly concentrated in the 90°—127°, the average polarization angle is about 102.73°;②(extension of late most of the time in 1.29 —13.05 ms/km within the scope of changes, with an average of 5.75 ms/km) the delay time are 1.29—12.05 ms/km. It is concluded that the S wave splitting parameters can relfect the dynamic changes of the stress ifeld in the source region, which can provide useful information for the study of the stress ifeld in Tangshan area and the earthquake prediction.关键词
S波分裂/延迟时间/旋转角度/主压应力/各向异性Key words
S wave splitting/delay/rotation angle/main compressive stress/anisotropy引用本文复制引用
贾炯,常亮,李冬圣,郭秋娜,蔡玲玲,赵英萍,张世凤..2012年唐山ML 5.1地震S波分裂研究[J].地震地磁观测与研究,2016,37(4):6-10,5.基金项目
河北省地震局科技星火计划项目 （）
