Glacier has a narrow spectrum on TM5, 7 bands, but moraine and snow and ice are different in evidence, therefore, TM5, 7 are advantageous bands for extracting glacier information.

• 冰川在TM5、7波段光谱值范围窄；且冰碛与冰雪有明显的光谱差异；是冰川信息提取的有利波段.