摘要
1985年作者编算了甘青区域地震波走时表,采用双层地壳模型,H_1=22.0公里,V_(p1)=6.10公里/秒,V_(s1)=3.55公里/秒,H_2=29.5公里,V_(p2)=6.47公里/秒,V_(s2)=3.81公里秒,H=51.5公里,V_(pn)=8.17公里/秒,V_(sn)=4.62公里/秒。表中除了按通常走时表给出了(?)、(?)、P_2、S_2、P_n、S_n波的走时外,还给出中间层界面上的反射波P_1、S_1和莫霍界面上的反射波P_n、S_n的走时。该表使用方便,比用单层模型计算的甘肃及邻近地区地震波走时表更接近实际,比用甘肃地区的4层定位模型计算的走时精度高。
In 1985, we calculated the travel-time table of regional seismic waves by using a two-layer crustal model, H_1=22.0km, V_(P1)=6.10km/—sec, V_(S1)=3.55km/sec; H_2=29.5km, V_(P2)=6.47km/sec, V_(S2)=3.81km/sec; H=51.5km, V_(Pn)= 8.17km/sec, V_(Sn)=4.62km/sec. Besides giving the travel times of (?), (?), P_2, S_2, P_n, S_n waves with the general travel-time table, it also gave the travel times of P_I, S_I reflection waves at the surface of the middel layer and of P_M, S_M reflection waves at the Moho surface. This table is more practical than that calculated by a one-layer model of Gansu and its adjacent areas, and more accurate than that calculated by a four-layer location model of Gansu area. It is used conveniently.
出处
《西北地震学报》
CSCD
1989年第1期11-15,共5页
Northwestern Seismological Journal
