中文摘要：

反射同相轴斜率表示射线参数、慢度水平分量等地震波运动学信息，是一类重要的地震资料属性.斜率拾取是使用斜率属性对地震资料进行处理和解释时不可或缺的环节.本文提出一种自动拾取二维测线炮点和接收点斜率的直线-双曲线叠加方法在共偏移距域用线性叠加方法拾取中心点上的斜率值，在共中心点域用双曲线叠加方法拾取半偏移距位置上的斜率值，然后再把中心点和半偏移距上的斜率值换算成炮点和接收点上的斜率值.对理论数据和实测资料的测试结果表明，与现有的利用倾斜叠加方法直接在共炮域和共接收点域，分别拾取接收点和炮点上的斜率值相比，本文方法具有更高的精度.

英文摘要：

The slope of locally coherent reflection events which contains seismic wave kinematics information such as ray parameters, slowness components, etc., is one of the important attributes of seismic data. The slope picking is an essential step of the seismic data processing and interpretation in which the slope attributes are used. A linear-hyperbolic stack based method which automatically picks the slopes of a 2-D seismic data at sources and receivers is presented in this paper. First, the slopes at the middle points between the sources and the receivers are picked using local linear stack method in the common offset domain, and the slopes at the half offset locations are picked using local hyperbolic stack method in the common middle point domain. Then, the slopes picked at the middle points and the half offset locations are converted to the slopes at the sources and the receivers. The experiment results of synthetic data and field data show that our method has a higher precision than the existing slant stack method which directly picks the slopes at receivers in the common source domain and those at sources in common receiver domain respectively.