 |
| Titel |
Heterogeneity in glacier response in the upper Shyok valley, northeast Karakoram |
| VerfasserIn |
R. Bhambri, T. Bolch, P. Kawishwar, D. P. Dobhal, D. Srivastava, B. Pratap |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1994-0416
|
| Digitales Dokument |
URL |
| Erschienen |
In: The Cryosphere ; 7, no. 5 ; Nr. 7, no. 5 (2013-09-13), S.1385-1398 |
| Datensatznummer |
250085155
|
| Publikation (Nr.) |
 copernicus.org/tc-7-1385-2013.pdf |
|
|
|
|
|
| Zusammenfassung |
| Glaciers in the Karakoram show long-term irregular behaviour with
comparatively frequent and sudden advances. A glacier inventory of the upper
Shyok valley situated in northeast Karakoram has been generated for the year
2002 using Landsat ETM+ and SRTM3 DEM as baseline data for the
investigations and subsequent change analysis. The upper Shyok valley
contained 2123 glaciers (larger than 0.02 km2 in size) with an area of
2977.9 ± 95.3 km2 in 2002. Out of these, 18 glaciers with an area
of 1004.1 ± 32.1 km2 showed surge-type behaviour. Change analysis
based on Hexagon KH-9 (years 1973 and 1974) and Landsat TM/ETM+
(years 1989, 2002 and 2011) images had to be restricted to a subset of 136 glaciers
(covering an area of 1609.7 ± 51.5 km2 in 2002) due to adverse
snow conditions. The area of the investigated glaciers, including the 18
surge-type glaciers identified, showed no significant changes during all
studied periods. However, the analysis provides a hint that the overall
glacier area slightly decreased until about 1989 (area 1973:
1613.6 ± 43.6 km2; area 1989: 1602.0 ± 33.6 km2)
followed by an increase (area 2002: 1609.7 ± 51.5; area 2011:
1615.8 ± 35.5 km2). Although the overall change in area is
insignificant, advances in glacier tongues since the end of the 1980s are
clearly visible. Detailed estimations of length changes for individual
glaciers since the 1970s and for Central Rimo Glacier since the 1930s confirm
the irregular retreat and advance. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|