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本文汇集了从六十年代末到八十年代初,地震勘探和测震方法给出的甘青地区地壳结构资料,根据地震观测和分析地震波的需求,简化出二十种地壳模型,由三千多个地震P波资料,进行观测走时与理论走时的对比,筛选出编算甘青区域地震波走时表的双层地壳模型:厚度H_1=22km,V_(P1)=6.10km/s,V_(S1)=3.55km/s Ha=29.5km,V_(P2)=6.47km/s,V_(S2)=3.81km/s H=51.5km,V_(Pn)=8.17km/s,V_(Sn)=4.62km/s
This paper brings together the data of the crustal structure in the Gansu area from the late 1960s to the early 1980s. According to the seismic observation and seismic wave analysis, 20 crustal models have been simplified, According to the data of multiple P waves, the double-layer crustal model for calculating the travel timetable of Ganqing region was screened by comparing the observed travel time with the theoretical travel time: thickness H_1 = 22km, V_ (P1) = 6.10km / s, V_ (S1 ) = 3.55km / s Ha = 29.5km, V P2 = 6.47km / s, V S2 = 3.81km / s H = 51.5km, V Pn = 8.17km / s, V Sn = 4.62km / s