Investigations of Glacier Hydrological Systems using Dye Tracer Techniques: Observations at Pasterzengletscher, Austria
Abstract A comprehensive series of dye tracer tests was undertaken over two summers at Pasterzengletscher, Austria, and from these a number of important conclusions can be drawn. A lateral division of drainage on the lower tongue was proved, but this was not determined by the direction of oblique cr...
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Cambridge University Press (CUP)
1983
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Online Access: | http://dx.doi.org/10.1017/s002214300003032x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002214300003032X |
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crcambridgeupr:10.1017/s002214300003032x 2024-09-15T18:15:37+00:00 Investigations of Glacier Hydrological Systems using Dye Tracer Techniques: Observations at Pasterzengletscher, Austria Burkimsher, Marion 1983 http://dx.doi.org/10.1017/s002214300003032x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002214300003032X en eng Cambridge University Press (CUP) Journal of Glaciology volume 29, issue 103, page 403-416 ISSN 0022-1430 1727-5652 journal-article 1983 crcambridgeupr https://doi.org/10.1017/s002214300003032x 2024-08-28T04:03:10Z Abstract A comprehensive series of dye tracer tests was undertaken over two summers at Pasterzengletscher, Austria, and from these a number of important conclusions can be drawn. A lateral division of drainage on the lower tongue was proved, but this was not determined by the direction of oblique crevasses. Water from many moulins passed into two or more drainage courses, as shown by repeated patterns of multiple peaks on the time/concentration curves. The spatial pattern of travel times from different moulins on the tongue was complex, although it remained stable over time. Repeated tracer tests showed that throughflow velocities varied by up to an order of magnitude during a single day. Maximum velocities occurred at the time of peak discharge, and probably the large diurnal velocity variations are caused by changes in the proportion of the length which has channel-full pressure flow. However, seasonal velocity variations were much smaller, although changes in outflow discharge were larger than in the diurnal case. This gives strong support to the concept that channels adjust in size to the average water discharge passing through, and that these changes occur over a matter of days or a few weeks. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 29 103 403 416 |
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Open Polar |
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Cambridge University Press |
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English |
description |
Abstract A comprehensive series of dye tracer tests was undertaken over two summers at Pasterzengletscher, Austria, and from these a number of important conclusions can be drawn. A lateral division of drainage on the lower tongue was proved, but this was not determined by the direction of oblique crevasses. Water from many moulins passed into two or more drainage courses, as shown by repeated patterns of multiple peaks on the time/concentration curves. The spatial pattern of travel times from different moulins on the tongue was complex, although it remained stable over time. Repeated tracer tests showed that throughflow velocities varied by up to an order of magnitude during a single day. Maximum velocities occurred at the time of peak discharge, and probably the large diurnal velocity variations are caused by changes in the proportion of the length which has channel-full pressure flow. However, seasonal velocity variations were much smaller, although changes in outflow discharge were larger than in the diurnal case. This gives strong support to the concept that channels adjust in size to the average water discharge passing through, and that these changes occur over a matter of days or a few weeks. |
format |
Article in Journal/Newspaper |
author |
Burkimsher, Marion |
spellingShingle |
Burkimsher, Marion Investigations of Glacier Hydrological Systems using Dye Tracer Techniques: Observations at Pasterzengletscher, Austria |
author_facet |
Burkimsher, Marion |
author_sort |
Burkimsher, Marion |
title |
Investigations of Glacier Hydrological Systems using Dye Tracer Techniques: Observations at Pasterzengletscher, Austria |
title_short |
Investigations of Glacier Hydrological Systems using Dye Tracer Techniques: Observations at Pasterzengletscher, Austria |
title_full |
Investigations of Glacier Hydrological Systems using Dye Tracer Techniques: Observations at Pasterzengletscher, Austria |
title_fullStr |
Investigations of Glacier Hydrological Systems using Dye Tracer Techniques: Observations at Pasterzengletscher, Austria |
title_full_unstemmed |
Investigations of Glacier Hydrological Systems using Dye Tracer Techniques: Observations at Pasterzengletscher, Austria |
title_sort |
investigations of glacier hydrological systems using dye tracer techniques: observations at pasterzengletscher, austria |
publisher |
Cambridge University Press (CUP) |
publishDate |
1983 |
url |
http://dx.doi.org/10.1017/s002214300003032x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002214300003032X |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 29, issue 103, page 403-416 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s002214300003032x |
container_title |
Journal of Glaciology |
container_volume |
29 |
container_issue |
103 |
container_start_page |
403 |
op_container_end_page |
416 |
_version_ |
1810453494680780800 |