Spatial distribution of debris thickness and melting from remote-sensing and meteorological data, at debris-covered Baltoro glacier, Karakoram, Pakistan
A distributed surface energy-balance study was performed to determine sub debris ablation across a large part of Baltoro glacier, a wide debris-covered glacier in the Karakoram range, Pakistan. The study area is ca 124km2. The study aimed primarily at analyzing the influence of debris thickness on the melt distribution. The spatial distribution of the physical and thermal characteristics of the debris was calculated from remote-sensing (ASTER image) and field data. Meteorological data from an automatic weather station at Urdukas (4022ma.s.l.), located adjacent to Baltoro glacier on a lateral moraine, were used to calculate the spatial distribution of energy available for melting during the
period 1–15 July 2004. The model performance was evaluated by comparisons with field measurements
for the same period. The model is reliable in predicting ablation over wide debris covered areas. It underestimates melt rates over highly crevassed areas and water ponds with a high variability of the
debris thickness distribution in the vicinity, and over areas with very low debris thickness (<0.03 m). We also examined the spatial distribution of the energy-balance components (global radiation and surface temperature) over the study area. The results allow us to quantify, for the study period, a meltwater production of 0.058km3.
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Citation proposal
Claudia Mihalcea (Università degli Studi di Milano) - Christoph Mayer (Bavarian Academy of Sciences and Humanities) - Guglielmina Diolaiuti (Università degli Studi di Milano) (2008) . Spatial distribution of debris thickness and melting from remote-sensing and meteorological data, at debris-covered Baltoro glacier, Karakoram, Pakistan. https://geoportal.mountaingenius.org/geonetwork/srv/api/records/0f046409-3a86-48d0-8a08-661c93528dac |
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- Alternate title
- by C. MIHALCEA,1 C. MAYER,2 G. DIOLAIUTI,1 C. D’AGATA,1 C. SMIRAGLIA,1 A. LAMBRECHT,3 E. VUILLERMOZ,4 G. TARTARI4- 1Department of Earth Sciences ‘Ardito Desio’, University of Milan, Via Mangiagalli 34, I-20133 Milan, Italy; 2Commission for Glaciology, Bavarian Academy of Sciences, Alfons-Goppel-Strasse 11, D-80539 Munich, Germany; 3Institute for Meteorology and Geophysics, University of Innsbruck, Innrain 52, A-6020 Innsbruck, Austria; 4CNR–IRSA, Water Research Institute/National Research Council, Localita` Occhiate, I-20047 Brugherio, Milan, Italy
- Date ( Publication )
- 2008-10-19T23:00:00
- Edition
- Annals of Glaciology 48
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- Hardcopy document
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- Purpose
- Status
- Completed
Author
- Maintenance and update frequency
- Not planned
- Keywords
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- debris covered glaciers, Karakorum, ice ablation
- Keywords ( Theme )
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- SHARE
- Access constraints
- Copyright
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- Metadata language
- eng
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- UTF8
- Topic category
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- Climatology, meteorology, atmosphere
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- ( )
- OnLine resource
- http://www.igsoc.org/annals/
- Hierarchy level
- Non geographic dataset
- Dataset
- Glacier ablation
- Statement
gmd:MD_Metadata
- File identifier
- 0f046409-3a86-48d0-8a08-661c93528dac XML
- Metadata language
- eng
- Character set
- UTF8
- Date stamp
- 2014-06-29T17:05:07
- Metadata standard name
- ISO 19115:2003/19139
- Metadata standard version
- 1.0
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