Files in this item
Glacier branch lines and glacier ice thickness estimation for debris-covered glaciers in the Central Tien Shan
Item metadata
dc.contributor.author | Pieczonka, Tino | |
dc.contributor.author | Bolch, Tobias | |
dc.contributor.author | Kröhnert, Melanie | |
dc.contributor.author | Peters, Juliane | |
dc.contributor.author | Liu, Shiyin | |
dc.date.accessioned | 2019-03-13T12:30:12Z | |
dc.date.available | 2019-03-13T12:30:12Z | |
dc.date.issued | 2018-10 | |
dc.identifier.citation | Pieczonka , T , Bolch , T , Kröhnert , M , Peters , J & Liu , S 2018 , ' Glacier branch lines and glacier ice thickness estimation for debris-covered glaciers in the Central Tien Shan ' , Journal of Glaciology , vol. 64 , no. 247 , pp. 835-849 . https://doi.org/10.1017/jog.2018.75 | en |
dc.identifier.issn | 0022-1430 | |
dc.identifier.other | PURE: 258135412 | |
dc.identifier.other | PURE UUID: 4f6c95b1-6bce-47af-a610-92d118ded8d5 | |
dc.identifier.other | Scopus: 85055448607 | |
dc.identifier.other | ORCID: /0000-0002-8201-5059/work/55379152 | |
dc.identifier.uri | https://hdl.handle.net/10023/17267 | |
dc.description.abstract | Information about the ice volume stored in glaciers is of high importance for sustainable water management in many arid regions of Central Asia. Several methods to estimate the ice volume exist. However, none of them take the specific characteristics of flat terminus debris-covered glaciers into account. We present a method for deriving spatially-distributed ice thickness for debris-covered dendritic glaciers, which are common not only in Central Tien Shan but also in several other mountain ranges in High Asia. The method relies on automatically generated branch lines, observed surface velocities and surface topographic parameters as basic input. Branch lines were generated using Thiessen polygons and Dijkstra's path algorithm. Ice thicknesses for four debris-covered glaciers - South Inylchek, Kaindy, Tomur and Koxkar glaciers - have been estimated along the branch line network solving the equation of laminar flow. For Koxkar and South Inylchek glaciers, respectively, maximum thicknesses of 250 and 380 m were estimated. These results differ by 50 m compared with GPR measurements with an uncertainty for the debris-covered parts of 40%. Based on geodetic mass balances, we estimate that the investigated glaciers lost between 6 and 28% of their volume from 1975 to the early 2000s. | |
dc.format.extent | 15 | |
dc.language.iso | eng | |
dc.relation.ispartof | Journal of Glaciology | en |
dc.rights | © The Author(s) 2018. This is an Open Access article, distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives licence (http://creativecommons.org/licenses/by-ncnd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is unaltered and is properly cited. The written permission of Cambridge University Press must be obtained for commercial re-use or in order to create a derivative work. | en |
dc.subject | cryospheric change | en |
dc.subject | glaciers | en |
dc.subject | remote sensing | en |
dc.subject | spatial analysis | en |
dc.subject | uncertainty quantification | en |
dc.subject | Earth-Surface Processes | en |
dc.subject | 3rd-DAS | en |
dc.title | Glacier branch lines and glacier ice thickness estimation for debris-covered glaciers in the Central Tien Shan | en |
dc.type | Journal article | en |
dc.description.version | Publisher PDF | en |
dc.contributor.institution | University of St Andrews. School of Geography & Sustainable Development | en |
dc.contributor.institution | University of St Andrews. Bell-Edwards Geographic Data Institute | en |
dc.identifier.doi | https://doi.org/10.1017/jog.2018.75 | |
dc.description.status | Peer reviewed | en |
This item appears in the following Collection(s)
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.