利用地震走时计算波速与震源深度*
李启雷,李玉丽

(青海省地震局,青海 西宁 810000)

青海台网; P波震相; 走时方程; 波速; 震源深度

Calculating Seismic Velocity and Focal Depth by Using Seismic Travel time
LI Qi-lei,LI Yu-li

(Earthquake Administration of Qinghai Province,Xining 810000,Qinghai,China)

Qinghai Seismic Network; P-wave phase; travel-time equation; wave velocity; focal depth

备注

利用青海台网记录清晰的P波震相资料,根据单层地壳模型地震走时方程,计算了P波速度和震源深度,得到直达波速度正态分布置信区间为5.96～6.09 km/s,首波波速度置信区间为7.69～8.06 km/s,震源深度置信区间为5.6～5.8 km。

Using data of clear P-wave phase recorded by Qinghai Seismic Network,based on the seismic travel time equation of the single-layer crustal model,we calculated the P-wave velocity and focal depth. The results show that at a 95% confidence level,the confidence interval in normal distribution of the direct wave velocity is 5.96～6.09 km/s,that of the head wave velocity is 7.69～8.06 km/s,and that of the focal depth is 5.6～5.8 km.