断面图绘制过程中的地形改正

TOPOGRAPHIC CORRECTION IN THE PROCESS OF THE COMPILATION OF THE SECTIONAL DRAWING

通过分析Surfer数据格式,编制了地形改正程序,可将地形校正到原始的假设平面观测断面图上,使观测面以实际高程的曲面形式表现出来,以达到更接近实际的效果。断面图地形改正是表征意义上的地形改正,地改以后可方便客观地观察异常的空间形态以及各异常的相互空间关系,同时也使断面图更美观,更具有实际指示意义。

Based on analyzing Surfer data format, the authors compiled the procedure for topographic correction. The topography could be corrected on the original presumed sectional drawing for plane observation, and thus the observation plane can be expressed in the form of practical elevation curved face, so as to attain the effect of being closer to the reality. The topographic correction on the sectional drawing is of symbolic significance. After topographic correction, the spatial shapes of anomalies and the spatial relationship of various anomalies can be more easily and objectively observed; meanwhile, the sectional drawing will become more beautiful and have higher practical indicating significance.