多元数据分析与遥感矿化蚀变信息提取模型

蚀变矿物的光谱行为造成了蚀变岩的光谱特征。利用典型岩石的多元数据分析，可以对蚀变矿物成份和光谱数据之间的关系作出定性和定量评价，进而建立遥感矿化蚀变信息提取模型。笔者利用青海某金多金属矿化区典型岩（矿）石样品的野外实测波谱数据和化学分析数据，进行了基于多元数据分析的遥感矿化蚀变信息提取模型研究，建立的比值组合线性回归模型较之单一比值方法具有更好的应用效果。

THE MULTIVARIATE DATA ANALYSIS AND THE MODEL FOR EXTRACTING REMOTE SENSING MINERALIZATION AND ALTERATION INFORMATION

The spectral behavior of altered minerals leads to the spectral characteristics of altered rocks.Using the multivariate data analysis of typical rocks,the relation between the components of altered minerals and spectral data can be estimated qualitatively and quantitatively,and hence a model for extracting remote sensing information of mineralization and alteration can be established.Using the spectral data obtained in field and chemical analysis data of typical rock(ore) samples in a gold polymetallic mineralization belt in Qinghai,the authors studied the model for extraction of remote sensing information of mineralization and alteration on the basis of multivariate data analysis,and established a linear regression model of ratio combination,whose application effect is better than that of the single ratio method.