基于ASTER数据的西昆仑造山带岩性提取研究

Exteaction of Lithologic Information from the West Kulun Orogenic Belt Using Aster Remote Sensing Image

应用ASTER数据,通过基于SMACC的端元提取及矿物指数等岩性信息提取方法,对西昆仑造山带库斯拉甫地区进行岩性信息遥感识别与提取。研究表明,基于SMACC的端元提取后合成的彩色图像和矿物指数图,能较好地表现岩石成分组成信息。ASTER影像在基岩裸露区岩性识别效果较好,特别是针对碳酸盐岩及含铁地质体。对于出露宽度较小的岩石识别及不同波段组合尝试有待进一步研究。

By using ASTER data and such methods for extraction of lithologic information as endmember extraction based on SMACC and the mineral index, a discrimination and extraction of lithologic information have been made in the Kusilafu area of the West Kunlun orogenic belt. The results show that the synthetic image based on SMACC and the min-eral index can reveal the composition of the rocks. ASTER images could prove to be an effective method for extraction of lithologic in the bedrock exposed areas, especially for carbonate rocks as well as ferrous geological body.But the lithology identification of small thickness and attempts of different bands combination remain to be studied.