兴海6.6级地震前后地震波的变化  

VARIATION OF SEISMIC WAVE BEFORE AND AFTER XINGHAI EARTHQUAKE WITH Ms 6.6

作　　者：都昌庭[1] 徐兰芬[1] 赵永海[1] 

机构地区：[1]青海省地震局,青海西宁810001

出　　处：《高原地震》2001年第1期38-44,共7页Plateau Earthquake Research

摘　　要：20 0 0年 9月 1 2日在青海省海南州兴海县西南发生了 6 6级地震。震后发现 ,青海省 6个专业台站的地震波速比在震前出现了下降 -低值 -发震的过程。波速比空间分布在兴海地震前形成了一个椭圆形的异常分布区 ,异常波速比的地震占总地震的73 %。另外 。WT5BZ]There occurred an earthquake with M s6.6 in Xinghai county in Qinghai province on Sept. 12,2000.The authors have found that V P/V S was in a drop-low-occur process in six professional stations before the earthquake.Spatial distribution of V P/V S formed an ellipse area,and the earthquakes of anomaly V P/V S were 73% of the total.The coda wave duration of Dawu was a complete anomaly process before the event.

关 键 词：兴海地震 波速比 尾波持续时间 震源机制解 

分 类 号：P315.31[天文地球—地震学]