泥沙颗粒微结构的GIS表达

Using a GIS System to Perform Analyses of the Micro-structure of Sediment Particle Surfaces

在受污染的水体环境中,泥沙颗粒发生越来越复杂的物理、化学和生物变化过程,泥沙颗粒微结构研究成为研究这些复杂过程的基础.本文借助高分辨率扫描电镜等先进手段对泥沙微结构进行研究,结合图像处理软件和数学工具定量描述泥沙颗粒的平面投影形状、表面凹凸和污染元素分布特征.以GIS为平台,将这些成果形象直观地表达出来,同时进行二次开发,提供泥沙颗粒的三维建模和工程泥沙模型应用数据接口.

In natural river systems with polluted water, more complex interactions occur between the sediment and the contaminants which involve complex physical, chemical and biological processes. The micro-structure of sediment particle surfaces holds the key to the study of these interactions and processes. In this paper, we use a high resolution scanning electron mieroscope to investigate the micro-structure of sediment particle surfaces. The image processing software and mathematical tools are applied to describe quantitatively the planar projection profile and surface topography of sediment particles and element distributions on particle surfaces, we adopt the GIS platform to present these results and develop it further to provide a three dimensional model for the particle surface and data interfaces for the sediment model application.