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ASTER measurement of supraglacial lakes in the Mount Everest region of the Himalaya

Annals of Glaciology

By:
, , and
DOI: 10.3189/172756402781817545

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Abstract

We demonstrate an application of Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) images to detect and monitor supraglacial lakes on glaciers in the Mount Everest region in Tibet (Xizang) and Nepal. ASTER offers powerful capabilities to monitor supraglacial lakes in terms of (1) surface area, growth and disappearance (spatial resolution = 15 m), (2) turbidity (15 m resolution), and (3) temperature (90 m resolution). Preliminary results show an overall similarity of supraglacial lakes on three glaciers. Lakes have widely varying turbidity as indicated by color in visible/near-infrared bands 1-3, the largest lakes being bright blue (highly turbid), cold (near 0??C) and hydrautically connected with other lakes and supraglacial streams, while small lakes are mostly dark blue (relatively clear water), warmer (>4??C), and appear hydrautically isolated. High levels of turbidity in supraglacial lakes indicate high rates of meltwater input from streams or erosion of ice cliffs, and thus are an indirect measure relating to the activity and hydraulic integration of the lake with respect to other lakes and streams in the glacier.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
ASTER measurement of supraglacial lakes in the Mount Everest region of the Himalaya
Series title:
Annals of Glaciology
DOI:
10.3189/172756402781817545
Volume
34
Issue:
1
Year Published:
2002
Language:
English
Publisher:
Ingenta Connect
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Annals of Glaciology
First page:
399
Last page:
408