【摘要】 中国西部地区复杂地表条件对准确地震成像提出了挑战。通过对起伏地表模型的数值模拟和处理分析,探讨了起伏地表条件下地震成像存在的问题和解决方法,实现了基于起伏地表的叠前逆时偏移,并用来对模型数据进行处理。与常规处理方法和基于浮动基准面的叠前深度偏移相比,该方法在地形复杂的陕北地区取得了良好的效果。更多还原

【Abstract】 The complex relief surfaces in western China challenge correct seismic imaging of them.The numerical simulation and processing analysis of the relief surface model were conducted,and the problems existed in the seismic imaging under relief surface conditions and solutions were discussed,including realization of pre-stack reverse time migration based on relief surfaces and processing of the model data.Compared with conventional processing approaches and pre-stack depth migration based on floating datum,this method can be effectively applied to the northern Shaanxi with complex landforms.更多还原