 |
| Titel |
Estimating the volume of glaciers in the Himalayan-Karakoram region using different methods |
| VerfasserIn |
H. Frey, H. Machguth, M. Huss, C. Huggel, S. Bajracharya, T. Bolch, A. Kulkarni, A. Linsbauer, N. Salzmann, M. Stoffel |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1994-0416
|
| Digitales Dokument |
URL |
| Erschienen |
In: The Cryosphere ; 8, no. 6 ; Nr. 8, no. 6 (2014-12-12), S.2313-2333 |
| Datensatznummer |
250116391
|
| Publikation (Nr.) |
 copernicus.org/tc-8-2313-2014.pdf |
|
|
|
|
|
| Zusammenfassung |
| Ice volume estimates are crucial for assessing water reserves stored in
glaciers. Due to its large glacier coverage, such estimates are of
particular interest for the Himalayan–Karakoram (HK) region. In this study,
different existing methodologies are used to estimate the ice reserves:
three area–volume relations, one slope-dependent volume estimation method,
and two ice-thickness distribution models are applied to a recent, detailed,
and complete glacier inventory of the HK region, spanning over the period
2000–2010 and revealing an ice coverage of 40 775 km2. An
uncertainty and sensitivity assessment is performed to investigate the
influence of the observed glacier area and important model parameters on the
resulting total ice volume. Results of the two ice-thickness distribution
models are validated with local ice-thickness measurements at six glaciers.
The resulting ice volumes for the entire HK region range from 2955 to 4737 km3, depending on the
approach. This range is lower than most previous estimates. Results from the
ice thickness distribution models and the slope-dependent thickness
estimations agree well with measured local ice thicknesses. However, total
volume estimates from area-related relations are larger than those from
other approaches. The study provides evidence on the significant effect of
the selected method on results and underlines the importance of a careful
and critical evaluation. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|