二维水质扩散模型的建立及应用  

The Establishment and Application for 2-D Diffusion Model of Water Quality

作　　者：万幼川[1] 林开愚[1] 李植生 雷志洪 

机构地区：[1]武汉测绘科技大学摄影测量与遥感系

出　　处：《武汉测绘科技大学学报》1995年第1期28-34,共7页Geomatics and Information Science of Wuhan University

摘　　要：根据东湖实际，探讨了二维湖泊水质扩散模型及其定解。提出的二维交替算法，具有快速收敛及确保精度等特点，改进后的内插模型解决了流场和浓度场的初始值和边界条件问题，形成了全湖数字高程模型；在浓度等值线快速生成的基础上，通过接口自动形成信息系统空间和属性文件，完成了专题自动分类。According to the character of East Lake in Wuhan City,the dimentional diffusion model of water quality and its solution have been studied. The counting speed and accuracy have been improved by usins the two-dimentional replacement method. The improved interpolating model is used in the definition of edge consistency values and initial values for differential equation. At the same time the digital elevation model of the lake bottom is formed.The space and attribute files in GIS are established through transformation on the basis of the formation of equal consistency line,thus completing auto-classification.

关 键 词：信息系统 水质 湖泊 污染物 扩散模型 

分 类 号：X824[环境科学与工程—环境工程]