基于SVM的含约束地球化学单元素异常圈定方法及应用  

SVM-based method and application of delineating geochemical single element anomalies with constraints

作　　者：常婵 郭艳涛 花卫华[1] 高艳芳[3] Chang Chan;Guo Yantao;Hua Weihua;Gao Yanfang(Faculty of Information Engineering,China University of Geosciences（Wuhan）,Wuhan 430074,Hubei,China;Unit 31648 of People′s Liberation Army of China,Nanning 530000,Guangxi,China;Institute ofGeophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang 065009,Hebei,China)

机构地区：[1]中国地质大学(武汉)信息工程学院 [2]中国人民解放军31648部队 [3]中国地质科学院地球物理地球化学勘查研究所

出　　处：《地质学刊》2018年第3期452-458,共7页Journal of Geology

基　　金：中国地质调查局项目"深部矿产三维可视化预测评价软件系统研发"(2017YFC0601501);"一体化系统模块的开发与完善"(IGGEW2018035)

摘　　要：地球化学元素异常的空间分布受限于地质背景、矿产空间分布和景观特征等因素,单元素异常图的绘制不应仅依据采样数据由计算机追踪等值线图的方法自动勾绘。传统的手工圈定方法效率低、受人为因素影响大。基于SVM(Support Vector Machine,支持向量机)提出了一种可以考虑地质约束的单元素异常圈定方法,并加入地质单元分区、地质构造等约束条件。该方法可以高效绘制出单元素异常图,并成功应用于2个实例中。The spatial distribution of geochemical element anomalies is limited by geological background, mineral spatial distribution,landscape characteristics and so on. The drawing of single element anomaly maps should not be solely based on sampling data which iscomputed into contour maps. The traditional manual delineation method is inefficient and subject to human disturbance. Based on Support Vector Machine （SVM）, this paper proposes a single element anomaly delineation method that considers geological constraints.The method can add constraints such as geological unit zoning and geological structure in drawing anomaly maps. It is quite efficient andhas succeeded in two practical single element anomaly mapping cases.

关 键 词：单元素异常图 地球化学 支持向量机 地质约束 

分 类 号：S159-3[农业科学—土壤学] P282[农业科学—农业基础科学]