Mots-clés
Dépression atmosphérique Fluctuation du glacier Glaciation Holocène LANDSAT MSS Modèle numérique Mousson Népal Pléistocène Réseau de drainage Système d'information géographique Télédétection Drainage network Geographical information system Glaciation Glacier fluctuation Holocene LANDSAT Low pressure MSS Monsoon Nepal Numerical model Pleistocene Remote sensingComparison of Late Pleistocene and modern glacier extents in Central Nepal based on digital elevation data and satellite imagery
Auteurs :DUNCAN, C.C.
KLEIN, A.J.
MASEK, J.G.
ISACKS, B.L.
Description :
This study investigates climate change over glacial time scales by comparing the modern and full-glacial extents of valley glaciation in the central Himalaya and estimating the relative climate changes they imply. To map full-glacial extents, the AA. adapt traditional field- and map-based geomorphic methods for use with a 90 m resolution digital elevation model (DEM) within a geographical information system (GIS). They analyze the valley morphology of the drainage network of central Nepal, using cross-valley form and slope angle statistics to discriminate between glacial and fluvial valleys. For both full-glacial and modern cases, ELA depressions are computed from the glacier limits using the DEM and a toe-to-headwall altitude ratio of 0.5.
Type de document :
Article de périodique
Source :
Quaternary research, issn : 0033-5894, 1998, vol. 49, n°. 3, p. 241-254, Collation : Illustration, Références bibliographiques : 3 p.
Date :
1998
Editeur :
Pays édition : Etats-Unis, San Diego, CA, Elsevier
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)