莒县-郯城地区地壳厚度的测定

DETERMINATION OF CRUSTAL THICKNESS OF JUXIAN-TANCHENG AREA

摘要: 选用经多次筛选的23次定位地震及130组高精度地震参数进行研究计算,用直达波时距方程计算了研究区直达纵、横波的平均传播速度(ν_p=6.13 km/s、ν_s=3.52 km/s)。利用反射纵横波得出地壳厚度H_P₁₁、H_S₁₁,莒县-郯城地区平均地壳厚度为34.8 km。

Abstract: Using travel-time equation of direct wave, the average velocity of direct P-wave and direct S-wave(ν_p=6.13 km/s, ν_s-=3.52 km/s) in Juxian-Tancheng area are calculated based on 23 Multiple screened earthquakes and 130 sets of high-precision seismic parameters.Then, the crustal thickness(H_P₁₁, H_S₁₁) of the study area are calculated using the reflection P-wave, reflection S-wave.The results indicate that the average crustal thickness in Junan-Tancheng area is about 34.8 km.