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Influence of supraglacial debris on summer ablation and mass balance in the 24K Glacier, southeast Tibetan Plateau

Auteur(s) et Affiliation(s)

WEI, Y.
Key Lab. of Tibetan Environment Changes and Land Surface Processes, Inst. of Tibetan Plateau Research, CAS, Beijing, Chine
TANDONG, Y.
Key Lab. of Tibetan Environment Changes and Land Surface Processes, Inst. of Tibetan Plateau Research, CAS, Beijing, Chine
State Key Lab. of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Inst., CAS, Beijing, Chine
BAIQING, X.
Key Lab. of Tibetan Environment Changes and Land Surface Processes, Inst. of Tibetan Plateau Research, CAS, Beijing, Chine
HANG, Z.
Key Lab. of Tibetan Environment Changes and Land Surface Processes, Inst. of Tibetan Plateau Research, CAS, Beijing, Chine


Description :
Many temperate glaciers in the southeast Tibetan Plateau are covered by supraglacial debris in the ablation area. To evaluate the effect of such debris on summer ablation and mass balance, the surface ablation on the 24K Glacier was measured in the summer of 2008. Mean ablation rates varied from 10 to 52 mm/day, strongly correlated to debris thickness. Synchronous observations of air temperature allowed application of a simple degree-day model to calculate ablation rates. Maximum values of both ablation rate and degree-day factors appeared in the middle area of the glacier where the debris layer thickness was about 1 cm. The simulated daily ablation obtained from the degree-day approach showed that the debris layers significantly affected the total summer ablation.


Type de document :
Article de périodique

Source :
Geografiska annaler. Series A. Physical geography, issn : 0435-3676, 2010, vol. 92, n°. 3, p. 353-360, nombre de pages : 8, Références bibliographiques : 27 ref.

Date :
2010

Editeur :
Pays édition : Suede, Stockholm, Svenska sällskapet för antropologi och geografi

Langue :
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)