Temporal changes of glacier hydrological systems indicated by isotopic and related observations at Austre Okstindbreen, Okstindan, Norway, 1976-87

Twelve years of observation at Austre Okstindbreen, Norway, have demonstrated that the drainage systems of glaciers change with time, both between and within seasons. Random events indicative of instability have been recorded, and disruption of the glacier systems has preceded some outbursts from Ka...

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Main Authors: Theakstone, W. H., Knudsen, N. T.
Format: Article in Journal/Newspaper
Language:English
Published: 1989
Subjects:
Online Access:https://research.manchester.ac.uk/en/publications/56b8423d-4508-4c2a-a152-9b7929d18f91
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record_format openpolar
spelling ftumanchesterpub:oai:pure.atira.dk:publications/56b8423d-4508-4c2a-a152-9b7929d18f91 2023-11-12T04:01:24+01:00 Temporal changes of glacier hydrological systems indicated by isotopic and related observations at Austre Okstindbreen, Okstindan, Norway, 1976-87 Theakstone, W. H. Knudsen, N. T. 1989 https://research.manchester.ac.uk/en/publications/56b8423d-4508-4c2a-a152-9b7929d18f91 eng eng info:eu-repo/semantics/restrictedAccess Theakstone , W H & Knudsen , N T 1989 , ' Temporal changes of glacier hydrological systems indicated by isotopic and related observations at Austre Okstindbreen, Okstindan, Norway, 1976-87 ' , Annals of Glaciology , vol. 13 , pp. 252-256 . article 1989 ftumanchesterpub 2023-10-30T09:12:01Z Twelve years of observation at Austre Okstindbreen, Norway, have demonstrated that the drainage systems of glaciers change with time, both between and within seasons. Random events indicative of instability have been recorded, and disruption of the glacier systems has preceded some outbursts from Kalvtjorna, the glacier-dammed lake. The results of dye-tracer tests suggest that, although discrete systems exist within the glacier, these vary between years. They also demonstrate that some of the water entering the glacier is stored temporarily as the capacities of the systems change. The chemical composition of river water emerging from Austre Okstindbreen differs from year to year, and it is found that both systematic patterns of variation and random deviations from them occur. Although waters of different origin mix within drainage systems, not all systematic patterns of isotopic composition are eliminated by this mixture; diurnal variations are superimposed on longer-term trends, which sheds light on drainage conditions. Between-year differences of within-season trends probably reflect changing spatial patterns of drainage. -from Authors Article in Journal/Newspaper Annals of Glaciology glacier The University of Manchester: Research Explorer austre Okstindbreen ENVELOPE(14.293,14.293,66.014,66.014) Dammed Lake ENVELOPE(-68.258,-68.258,68.496,68.496) Norway Okstindbreen ENVELOPE(14.148,14.148,65.987,65.987)
institution Open Polar
collection The University of Manchester: Research Explorer
op_collection_id ftumanchesterpub
language English
description Twelve years of observation at Austre Okstindbreen, Norway, have demonstrated that the drainage systems of glaciers change with time, both between and within seasons. Random events indicative of instability have been recorded, and disruption of the glacier systems has preceded some outbursts from Kalvtjorna, the glacier-dammed lake. The results of dye-tracer tests suggest that, although discrete systems exist within the glacier, these vary between years. They also demonstrate that some of the water entering the glacier is stored temporarily as the capacities of the systems change. The chemical composition of river water emerging from Austre Okstindbreen differs from year to year, and it is found that both systematic patterns of variation and random deviations from them occur. Although waters of different origin mix within drainage systems, not all systematic patterns of isotopic composition are eliminated by this mixture; diurnal variations are superimposed on longer-term trends, which sheds light on drainage conditions. Between-year differences of within-season trends probably reflect changing spatial patterns of drainage. -from Authors
format Article in Journal/Newspaper
author Theakstone, W. H.
Knudsen, N. T.
spellingShingle Theakstone, W. H.
Knudsen, N. T.
Temporal changes of glacier hydrological systems indicated by isotopic and related observations at Austre Okstindbreen, Okstindan, Norway, 1976-87
author_facet Theakstone, W. H.
Knudsen, N. T.
author_sort Theakstone, W. H.
title Temporal changes of glacier hydrological systems indicated by isotopic and related observations at Austre Okstindbreen, Okstindan, Norway, 1976-87
title_short Temporal changes of glacier hydrological systems indicated by isotopic and related observations at Austre Okstindbreen, Okstindan, Norway, 1976-87
title_full Temporal changes of glacier hydrological systems indicated by isotopic and related observations at Austre Okstindbreen, Okstindan, Norway, 1976-87
title_fullStr Temporal changes of glacier hydrological systems indicated by isotopic and related observations at Austre Okstindbreen, Okstindan, Norway, 1976-87
title_full_unstemmed Temporal changes of glacier hydrological systems indicated by isotopic and related observations at Austre Okstindbreen, Okstindan, Norway, 1976-87
title_sort temporal changes of glacier hydrological systems indicated by isotopic and related observations at austre okstindbreen, okstindan, norway, 1976-87
publishDate 1989
url https://research.manchester.ac.uk/en/publications/56b8423d-4508-4c2a-a152-9b7929d18f91
long_lat ENVELOPE(14.293,14.293,66.014,66.014)
ENVELOPE(-68.258,-68.258,68.496,68.496)
ENVELOPE(14.148,14.148,65.987,65.987)
geographic austre Okstindbreen
Dammed Lake
Norway
Okstindbreen
geographic_facet austre Okstindbreen
Dammed Lake
Norway
Okstindbreen
genre Annals of Glaciology
glacier
genre_facet Annals of Glaciology
glacier
op_source Theakstone , W H & Knudsen , N T 1989 , ' Temporal changes of glacier hydrological systems indicated by isotopic and related observations at Austre Okstindbreen, Okstindan, Norway, 1976-87 ' , Annals of Glaciology , vol. 13 , pp. 252-256 .
op_rights info:eu-repo/semantics/restrictedAccess
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