【摘要】 1968至1970年国家地震局与石油工业部合作在河北省元氏到山东省济南长270km地段上,进行了人工地震剖面探测(简称元—济剖面)。1974年中国科学院地球所滕吉文教授等人对该资料进行了分析解释。本文在此基础上,重新对比追踪了邢台震中区反射波的震相,并根据石油工业部SJ79—366的剖面结果进行了沉积层校正,在所得出的一维模型的基础上,用二维反演程序进行了射线追踪和走时拟合,进一步得到该区二维速度结构,并对该区强震发生的深部条件进行了讨论。更多还原

【Abstract】 During 1968 to 1970, the State Seismological Bureau, cooperating with the ministry of the petroleum industry had done a cross profile of seismic sounding from Yuanshi in Hebei province to Jinan in Shandong province, which is about 270kin long. This data was analyzed and interpreted by prof. Teng Jin wen in 1974. Reanalyzing this data in this paper, we first compare and trace the seismic phases of the reflection wave this area again, then make a inhomogeneous correction to the sedimentary layer near the ground surface, according to the cross section of SJ79-366 made by the ministry of the petroleum industry on the base of the one-dimensional model, we do the ray tracing and trave time fitting by using advanced two-dimensional inversion program and get an precise velocity-depth structure. Finally, we futher discuss the deep conditions with which strong earthquakes occur.更多还原