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Glacier variations in the Trans Alai Massif and the Lake Karakul catchment (Northeastern Pamir) measured from space


Holzer, Nicolai; Golletz, Tim; Buchroithner, Manfred F; Bolch, Tobias (2016). Glacier variations in the Trans Alai Massif and the Lake Karakul catchment (Northeastern Pamir) measured from space. In: Singh, R B; Schickhoff, Udo; Mal, Suraj. Climate change, glacier response, and vegetation dynamics in the Himalaya : contributions toward future earth initiatives. Cham: Springer, 139-153.

Abstract

Glacier area and length changes were measured in the central Trans Alai of the northeastern Pamir, including the entire catchment of Lake Karakul. Annual shrinkage determined from Landsat 7 ETM+ imagery accounted for −0.8 ± 0.4 % a⁻¹ , corresponding to −8.8 ± 4.8 % from 1455 ± 51 km² in 2000 to 1327 ± 48 km² in 2011. Several glaciers could be mapped back to 1973 based on a KH-9 Hexagon reconnaissance image. Measured glacier extents of 550 ± 10 km² in 1973, 540 ± 9 km² in 2000, and 521 ± 9 km² in 2011 indicate accelerated shrinkage for the last decade in the Trans Alai. Glaciers retreated on average by −4.3 ± 0.5 m a⁻¹ before 2000 and subsequently advanced by +6.1 ± 1.0 m a⁻¹ until 2011. Geodetic mass balances of four selected glaciers were determined from a Digital Elevation Model extracted from a 2010 ALOS-PRISM tri-stereo image and the February 2000 SRTM-3 elevation dataset (1999). Its difference image reveals highly variable glacier elevation changes. While three glaciers showed probably a minor loss (−0.16 ± 0.68 m w.e. a⁻¹ to −0.06 ± 0.68 m w.e. a⁻¹), a more pronounced mass loss was observed for Ujsuu Glacier (−0.50 ± 0.68 m w.e. a⁻¹). This study reveals signifi cant glacier variations and numerous indications of surges in the Trans Alai, a well-known phenomenon in the Pami

Abstract

Glacier area and length changes were measured in the central Trans Alai of the northeastern Pamir, including the entire catchment of Lake Karakul. Annual shrinkage determined from Landsat 7 ETM+ imagery accounted for −0.8 ± 0.4 % a⁻¹ , corresponding to −8.8 ± 4.8 % from 1455 ± 51 km² in 2000 to 1327 ± 48 km² in 2011. Several glaciers could be mapped back to 1973 based on a KH-9 Hexagon reconnaissance image. Measured glacier extents of 550 ± 10 km² in 1973, 540 ± 9 km² in 2000, and 521 ± 9 km² in 2011 indicate accelerated shrinkage for the last decade in the Trans Alai. Glaciers retreated on average by −4.3 ± 0.5 m a⁻¹ before 2000 and subsequently advanced by +6.1 ± 1.0 m a⁻¹ until 2011. Geodetic mass balances of four selected glaciers were determined from a Digital Elevation Model extracted from a 2010 ALOS-PRISM tri-stereo image and the February 2000 SRTM-3 elevation dataset (1999). Its difference image reveals highly variable glacier elevation changes. While three glaciers showed probably a minor loss (−0.16 ± 0.68 m w.e. a⁻¹ to −0.06 ± 0.68 m w.e. a⁻¹), a more pronounced mass loss was observed for Ujsuu Glacier (−0.50 ± 0.68 m w.e. a⁻¹). This study reveals signifi cant glacier variations and numerous indications of surges in the Trans Alai, a well-known phenomenon in the Pami

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Additional indexing

Item Type:Book Section, not refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Geography
Dewey Decimal Classification:910 Geography & travel
Language:English
Date:2016
Deposited On:20 Dec 2016 13:31
Last Modified:20 Dec 2016 13:49
Publisher:Springer
ISBN:978-3-319-28975-5
Related URLs:http://www.springer.com/de/book/9783319289755 (Publisher)

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