地震道空间分辨力研究  

Study on the spatial resolution of seismic trace

作　　者：云美厚[1] 丁伟[1] 杨凯[1] 

机构地区：[1]胜利石油管理局

出　　处：《地球物理学进展》2005年第3期741-746,共6页Progress in Geophysics

摘　　要：在高分辨率地震勘探中,除了了解子波特性对分辨力的影响外,研究地震道在空间任意方向的分辨力变化规律同样是非常重要的.受分辨力估算方法的局限性,除垂直分辨力和水平分辨力外,目前对于空间任意空间方向分辨力变化的研究很少.本文分析了微分法分辨力和广义空间分辨力估算公式的异同.并利用广义空间分辨力公式分析了分辨力随炮检距、观测点位置、深度的变化规律及其内在本质.与此同时,对广义空间分辨力概念进行了图形解释,揭示了其实质.这对于更好地理解和运用广义空间分辨力计算公式具有重要的意义.In the process of seismic exploration of high resolution, it is also very important to study the spatial variation of resolution besides understanding the influence of wavelet on resolution. At present, study on the resolution along any spatial direction is very little besides the vertical and horizontal resolution by the limit of the calculation method. In this paper, the differences of formulas between differential method and generalized spatial resolution are analyzed, and regularities and essence of resolution variation with offset and survey point position and depth are analyzed by using the generalized spatial resolution formula. Meanwhile, A diagram explanation is given out, which shows the essential characteristic of the generalized spatial resolution. All above is very meaningful to understand and use the generalized spatial resolution formula.

关 键 词：地震道 广义空间分辨力 平面波 球面波 微分法 本质 

分 类 号：P631[天文地球—地质矿产勘探]