Changes in glacierisation, climate and runoff in the second half of the 20th century in the Naryn basin, Central Asia
| Autor: | Sergiy Vorogushyn, Wilfried Hagg, Abror Gafurov, Doris Duethmann, Christoph Mayer, David Kriegel, Daniel Farinotti |
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| Rok vydání: | 2013 |
| Předmět: |
Hydrology
Global and Planetary Change geography geography.geographical_feature_category 010504 meteorology & atmospheric sciences 0207 environmental engineering Drainage basin Glacier 550 - Earth sciences 02 engineering and technology Oceanography Snow 01 natural sciences Freezing point 13. Climate action Snowmelt Tributary Environmental science Precipitation 020701 environmental engineering Surface runoff 0105 earth and related environmental sciences |
| Zdroj: | Global and Planetary Change |
| DOI: | 10.1016/j.gloplacha.2013.05.014 |
| Popis: | Glaciers are significant fresh water storages in Central Asian high mountains and are considered to substantially contribute to the summer runoff of Central Asian Rivers. We present a comprehensive study of the glacier area changes in the Naryn catchment located in the Tien Shan Mountains. The catchment with a size of 55944 km2 is a major tributary of the Syrdarya River which is heavily used for water supply and irrigation. We analysed the glacier retreat based on Landsat MSS TM and ETM+ imagery for the mid 1970s late 1990s and mid 2000s and based on a SPOT scene for 2007. Our results show a decreasing glacierisation within the catchment shrinking from 1210±30 km2 (2.2 glacierisation) in the 1970s to 1019±25 km2 (1.8 glacierisation) in the late 1990s and further down to 926±23 km2 (1.7 glacierisation) in the mid 2000s corresponding to an area loss of 23 in total. The analysis reveals spatially heterogeneous area loss within the catchment. This can be associated with different hypsometries size distributions aspects and presences of debris cover. Small glaciers (with an area |
| Databáze: | OpenAIRE |
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