CAJ | 학술논문

为了对贵州省矿产资源潜力进行评价,以ETM+为数据源,采用“去干扰异常主分量门限化技术( deinterfered anomalous principal component thresholding technique,DAPCTT)”提取了贵州省弱矿化蚀变遥感信息(即羟基遥感异常和铁染遥感异常信息)。这些信息是大量的离散数据,并以栅格文件形式表现,故采用密度加权法对离散异常点进行了表面内插处理,并绘制成等值线图。从这些图可以看出,遥感异常的分布具有一定的规律性,与地层、构造和矿产资源分布均有较好的吻合度。结合部分元素的地球化学异常分布图、高分辨率遥感图像和野外实测蚀变带等地学资料对遥感异常进行比对和验证的结果表明,用上述方法提取的弱矿化蚀变遥感信息可靠,基本反映了它们与地质构造、岩石及采矿场的依存关系,为贵州省矿产资源潜力评价提供了新的依据。
위료대귀주성광산자원잠력진행평개,이ETM+위수거원,채용“거간우이상주분량문한화기술( deinterfered anomalous principal component thresholding technique,DAPCTT)”제취료귀주성약광화식변요감신식(즉간기요감이상화철염요감이상신식)。저사신식시대량적리산수거,병이책격문건형식표현,고채용밀도가권법대리산이상점진행료표면내삽처리,병회제성등치선도。종저사도가이간출,요감이상적분포구유일정적규률성,여지층、구조화광산자원분포균유교호적문합도。결합부분원소적지구화학이상분포도、고분변솔요감도상화야외실측식변대등지학자료대요감이상진행비대화험증적결과표명,용상술방법제취적약광화식변요감신식가고,기본반영료타문여지질구조、암석급채광장적의존관계,위귀주성광산자원잠력평개제공료신적의거。
Taking Landsat7 ETM+ as the data source and using “de-interfered anomalous principal component thresholding technique,i. e. , DAPCTT”,the authors extracted weak mineralization and alteration remote sensing information ( i. e. hydroxyl and iron-stain remote sensing anomaly information) in Guizhou Province. As this kind of information contains large quantities of discrete data and uses the grid file form, the authors used the density weighted method to process the surface interpolation of the discrete outliers and drew the contour maps. The contour maps show that the remote sensing anomaly distribution has certain regularity and is in good agreement with the formation, structure and distribution of mineral resources. In combination with geochemical element anomaly distribution map,high resolution remote sensing images and field measured alteration zone data,the comparison and verification were made for the remote sensing anomalies, and the results show that the weak mineralization and alteration remote sensing information extracted by these methods is reliable and can reflect the basic relationships between geological structures,rocks and mining fields. In addition, it can supply new clues to the evaluation of mineral resources potential in Guizhou Province.