一、宽线剖面的野外工作为了获得宽线剖面的必要资料,在地震野外工作中,可以沿予计测线同时铺设几条(5条或7条)平行测线(如图1a)。线距为接收点距之半。测线方向不受地下构造特点的约束,可以只考虑有利地形条件。在每条平行测线上的激发点和接收点位,为了便于处理,要求在横向上成线性排列。 Field work in wide-profile section In order to obtain the necessary information for wide-profile section, parallel (5 or 7) parallel surveys can be laid along the planned survey line during seismic field work (Figure 1a). The line spacing is half the receiving pitch. The direction of the survey line is not constrained by the subsurface structural features and can only consider favorable topographic conditions. In each parallel line of the excitation point and the receiving point, in order to facilitate the processing, requiring a linear arrangement in the horizontal.