对地球化学图编制过程的深层探究

Further research on geochemical mapping

地球化学图是一种分层设色等值线图。随着化探方法技术和计算机制图技术的发展,多年来的地球化学图的制作,逐渐形成了一套广泛应用的普适经验。这里利用实测数据和可视化技术,从等值线图的制作原理出发,深入研究了网格化数据文件和色阶文件的形成过程,分析了该过程中的关键问题。在此基础上,对区域地球化学勘查和普查时,地球化学图制作过程中的网格化参数的正确设置,色阶文件的确定给出了较为合理的设置方法。

A geochemical map is a contour map of colour filled according levels. With the developing of Geochemical meth- ods and automate mapping techniques, a suit of universal experience has been gotten in geochemical mapping for many years. From the theory of getting contour, by taking advantage of actual data and visual technique to research the forming process of gridding and level files, this paper analyzes whether the universal experience is consistent with today＇s contour map graphics and to meet the needs of methods and techniques. Then the explicit conclusion of setting proper parameters in gridding and getting levels to be used in regional and semi--detailed geochemical survey has been given in this paper.