工程地质学报2012，Vol.20Issue(2)：152-159,8.
地质灾害危险性评价因子对格网大小的敏感性与误差分析
SENSITIVITY AND ERROR ANALYSIS OF CONTROLLING FACTORS DUE TO VARIATION OF GRID SIZES IN GEOHAZARD ASSESSMENT
摘要
Abstract
Image grid cell is a widely used mapping unit type in GIS-based geohazard assessment. Values of each controlling factor should be calculated and endowed to grids. Risk levels can be determined through overlay analysis. However, due to the lack of quantitative computational model, the determination of grid size is largely dependent on expert experience. Taking Enshi City as an example, this paper analyzes the influence mechanism of grid sizes on the most commonly used controlling factors. The results can provide scientific basis for the determination of grid size.关键词
地质灾害/评价因子/格网大小/敏感性分析Key words
Geohazard/Controlling factor/Grid size/Sensitivity analysis分类
天文与地球科学引用本文复制引用
范林峰,胡瑞林,周顺江,王珊珊,张小艳..地质灾害危险性评价因子对格网大小的敏感性与误差分析[J].工程地质学报,2012,20(2):152-159,8.基金项目
国家科技支撑计划课题(2008BAK50B04-3),湖北省交通运输厅科技项目. （2008BAK50B04-3）
