基于ASTER数据的内蒙古东乌珠穆沁北部地区遥感蚀变信息提取

被引:18
作者
杨长保 [1 ]
姜琦刚 [1 ]
刘万崧 [1 ]
邱殿明 [2 ]
机构
[1] 吉林大学地球探测科学与技术学院
[2] 吉林大学学报编辑部
关键词
热液蚀变; ASTER; 光谱角制图; 东乌珠穆沁;
D O I
10.13278/j.cnki.jjuese.2009.06.033
中图分类号
TP751 [图像处理方法];
学科分类号
081002 ;
摘要
ASTER数据在短波红外和热红外波段光谱信息明显优于ETM,使得在ASTER波段范围内能够更为详尽地刻画地物波谱,尤其是具有特征谱带的岩石和矿物。选择内蒙古东乌珠穆沁旗北部地区为工作区域,设计了用光谱角制图法提取矿化蚀变信息的技术方案。通过波段组合和增强处理,ASTER数据对含Fe—OH(如黄钾铁矾,含铁白云母)、Al—OH(如粘土类矿物、明矾石、绿泥石、绢云母)和Fe3+(如褐铁矿,赤铁矿)3种类型蚀变信息的刻画能力明显比ETM更好。野外查证了提取结果的可靠性。
引用
收藏
页码:1163 / 1167
页数:5
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