Short term variations of tracer transit speed on alpine glaciers
We first present the results of a series of tracer experiments conducted on an alpine glacier (Gornergletscher, Switzerland) over a diurnal discharge cycle. For these injections, a moulin was used into which an ice marginal lake was draining, providing a relatively constant discharge. The measured t...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00028501 2023-05-15T18:32:32+02:00 Short term variations of tracer transit speed on alpine glaciers Werder, M. A. Schuler, T. V. Funk, M. 2010-09 electronic https://doi.org/10.5194/tc-4-381-2010 https://noa.gwlb.de/receive/cop_mods_00028501 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00028456/tc-4-381-2010.pdf https://tc.copernicus.org/articles/4/381/2010/tc-4-381-2010.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-4-381-2010 https://noa.gwlb.de/receive/cop_mods_00028501 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00028456/tc-4-381-2010.pdf https://tc.copernicus.org/articles/4/381/2010/tc-4-381-2010.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2010 ftnonlinearchiv https://doi.org/10.5194/tc-4-381-2010 2022-02-08T22:48:09Z We first present the results of a series of tracer experiments conducted on an alpine glacier (Gornergletscher, Switzerland) over a diurnal discharge cycle. For these injections, a moulin was used into which an ice marginal lake was draining, providing a relatively constant discharge. The measured tracer transit speeds show two diurnal maxima and minima. These findings are qualitatively different to existing observations from two series of injections conducted at Unteraargletscher (Switzerland) using a moulin fed by supraglacial meltwater having a high diurnal variability, which displayed one diurnal maximum and minimum. We then develop and use a simple two-component model of the glacier drainage system, comprising a moulin and a channel element, to simulate the measured transit speeds for all three injection series. The model successfully reproduces all the observations and shows that the same underlying processes can produce the qualitatively different behaviour depending on the different moulin input discharge regimes. Using the model, we assess the relative importance of the different measurement quantities, show that frequent measurements of moulin input discharge are indispensable and propose an experiment design to monitor the development of the drainage system over several weeks. Article in Journal/Newspaper The Cryosphere Niedersächsisches Online-Archiv NOA Marginal Lake ENVELOPE(163.500,163.500,-74.600,-74.600) The Cryosphere 4 3 381 396 |
institution |
Open Polar |
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Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Werder, M. A. Schuler, T. V. Funk, M. Short term variations of tracer transit speed on alpine glaciers |
topic_facet |
article Verlagsveröffentlichung |
description |
We first present the results of a series of tracer experiments conducted on an alpine glacier (Gornergletscher, Switzerland) over a diurnal discharge cycle. For these injections, a moulin was used into which an ice marginal lake was draining, providing a relatively constant discharge. The measured tracer transit speeds show two diurnal maxima and minima. These findings are qualitatively different to existing observations from two series of injections conducted at Unteraargletscher (Switzerland) using a moulin fed by supraglacial meltwater having a high diurnal variability, which displayed one diurnal maximum and minimum. We then develop and use a simple two-component model of the glacier drainage system, comprising a moulin and a channel element, to simulate the measured transit speeds for all three injection series. The model successfully reproduces all the observations and shows that the same underlying processes can produce the qualitatively different behaviour depending on the different moulin input discharge regimes. Using the model, we assess the relative importance of the different measurement quantities, show that frequent measurements of moulin input discharge are indispensable and propose an experiment design to monitor the development of the drainage system over several weeks. |
format |
Article in Journal/Newspaper |
author |
Werder, M. A. Schuler, T. V. Funk, M. |
author_facet |
Werder, M. A. Schuler, T. V. Funk, M. |
author_sort |
Werder, M. A. |
title |
Short term variations of tracer transit speed on alpine glaciers |
title_short |
Short term variations of tracer transit speed on alpine glaciers |
title_full |
Short term variations of tracer transit speed on alpine glaciers |
title_fullStr |
Short term variations of tracer transit speed on alpine glaciers |
title_full_unstemmed |
Short term variations of tracer transit speed on alpine glaciers |
title_sort |
short term variations of tracer transit speed on alpine glaciers |
publisher |
Copernicus Publications |
publishDate |
2010 |
url |
https://doi.org/10.5194/tc-4-381-2010 https://noa.gwlb.de/receive/cop_mods_00028501 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00028456/tc-4-381-2010.pdf https://tc.copernicus.org/articles/4/381/2010/tc-4-381-2010.pdf |
long_lat |
ENVELOPE(163.500,163.500,-74.600,-74.600) |
geographic |
Marginal Lake |
geographic_facet |
Marginal Lake |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-4-381-2010 https://noa.gwlb.de/receive/cop_mods_00028501 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00028456/tc-4-381-2010.pdf https://tc.copernicus.org/articles/4/381/2010/tc-4-381-2010.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-4-381-2010 |
container_title |
The Cryosphere |
container_volume |
4 |
container_issue |
3 |
container_start_page |
381 |
op_container_end_page |
396 |
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1766216666141687808 |