遥感信息
遙感信息
요감신식
2015年
4期
66-74
,共9页
张志军%庄光军%杨涛%王明%刘慧蓝%王利功
張誌軍%莊光軍%楊濤%王明%劉慧藍%王利功
장지군%장광군%양도%왕명%류혜람%왕리공
红土沟-川刺沟地区%最佳指数%构造解译%蚀变信息%靶区预测
紅土溝-川刺溝地區%最佳指數%構造解譯%蝕變信息%靶區預測
홍토구-천자구지구%최가지수%구조해역%식변신식%파구예측
Hongtugou-Chuancigou region%optimum index factor%tectonic interpretation%alteration information%target prediction
为了寻找新的找矿靶区,拓展遥感找矿技术的应用潜力,该研究以 ETM 和 GeoEye-1遥感影像为基础,计算了彩色合成的最佳指数并对图像进行滤波处理以增强构造信息、解译线环构造;采用“SAM 去干扰异常主分量阈值门限技术”对图像进行铁染、羟基蚀变信息提取;结合多元数据综合分析及成矿预测,圈定了3处靶区。通过实地地质工作,在圈定的第一靶区内发现了矿化较好的蚀变带,验证了通过构造增强、蚀变提取、多元数据综合分析,运用遥感技术找矿方法的准确、有效,为该区找矿工作提供了新的有利依据。
為瞭尋找新的找礦靶區,拓展遙感找礦技術的應用潛力,該研究以 ETM 和 GeoEye-1遙感影像為基礎,計算瞭綵色閤成的最佳指數併對圖像進行濾波處理以增彊構造信息、解譯線環構造;採用“SAM 去榦擾異常主分量閾值門限技術”對圖像進行鐵染、羥基蝕變信息提取;結閤多元數據綜閤分析及成礦預測,圈定瞭3處靶區。通過實地地質工作,在圈定的第一靶區內髮現瞭礦化較好的蝕變帶,驗證瞭通過構造增彊、蝕變提取、多元數據綜閤分析,運用遙感技術找礦方法的準確、有效,為該區找礦工作提供瞭新的有利依據。
위료심조신적조광파구,탁전요감조광기술적응용잠력,해연구이 ETM 화 GeoEye-1요감영상위기출,계산료채색합성적최가지수병대도상진행려파처리이증강구조신식、해역선배구조;채용“SAM 거간우이상주분량역치문한기술”대도상진행철염、간기식변신식제취;결합다원수거종합분석급성광예측,권정료3처파구。통과실지지질공작,재권정적제일파구내발현료광화교호적식변대,험증료통과구조증강、식변제취、다원수거종합분석,운용요감기술조광방법적준학、유효,위해구조광공작제공료신적유리의거。
In order to find new mineral prospecting targets and expand the potential application of remote sensing prospecting technology,this investigation calculated the optimum index factor of color composite based on ETM and GeoEye-1 remote sensing image,then it made the filtering process to enhance the tectonic information and interpret the linear and circular geological structure.Furthermore,extraction to the information of iron and hydroxyl alteration using “de-interfered anomalous principal component thresholding technique based on spectral angle mapping(SAM)”.Finally,three favorable target areas were delineated by analyzing the multi-data composite and the metallogenic prediction.Through field geological work,the authors discovered a better mineralized alteration zone in the delineated target area and this verified the effectiveness of the proposed method.This method provides a new advantageous basis for prospecting in study area.