基于Landsat8 OLI数据的遥感蚀变异常提取应用研究——以内蒙古阿鲁科尔沁旗地区为例

APPLICATION OF ALTERATION ANOMALY EXTRACTION BY REMOTE SENSING BASED ON LANDSAT 8 OLI DATA: A Case Study of Ar Horqin Qi, Inner Mongolia

摘要: 在内蒙古阿鲁科尔沁旗地区地质调查工作中，应用"去干扰-主分量分析-异常筛选"方法体系，根据研究区成矿条件和Landsat8卫星OLI传感器数据特点，进行遥感蚀变异常提取.在对提取结果进行野外验证时，发现多处矿化点，有力支持了地质找矿工作.

Abstract: The methodology of "interference suppression-principal component analysis-exception filter" is applied in the geological survey in Ar Horqin Qi, Inner Mongolia. The alteration anomaly information is extracted by remote sensing on the basis of metallogenic condition in the study area and characteristics of Landsat 8 OLI sensor data. Quite a few mineralized occurrences are also discovered in the field validation for the extracted result, which provides strong support for geological prospecting.