ASTER ratio indices for supraglacial terrain mapping

被引：70

作者：

Keshri, A. K. ^{[1
]}

Shukla, A. ^{[1
]}

Gupta, R. P. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Earth Sci, Roorkee 247667, Uttar Pradesh, India

来源：

INTERNATIONAL JOURNAL OF REMOTE SENSING | 2009年 / 30卷 / 02期

关键词：

SNOW COVER;

D O I：

10.1080/01431160802385459

中图分类号：

TP7 [遥感技术];

学科分类号：

081102 ; 0816 ; 081602 ; 083002 ; 1404 ;

摘要：

Supraglacial terrain, such as that found in the Himalayas, is typically composed of snow, ice, ice-mixed-debris (IMD) and debris. This letter presents a methodology for systematic discrimination and mapping of these supraglacial cover types using Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data. The Normalized Difference Snow Index (NDSI) has been used previously for discrimination of snow/ice-bearing zones versus debris. Two new indices, the Normalized Difference Glacier Index (NDGI) and the Normalized Difference Snow Ice Index (NDSII), are presented. The combination of all three indices allows discrimination of snow, ice and IMD in a systematic manner.

引用

页码：519 / 524

页数：6

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