Controls on the formation and sudden drainage of glacier-impounded lakes: implications for jokulhlaup characteristics
Over the past few years there has been an increase in understanding of glacier-impounded or ‘ice-dammed’ lake behaviour. The spectacular jökulhlaup (catastrophic flood) from Grímsvötn, Iceland in November 1996 has both raised the profile of such events and emphasized the need for awareness of the pr...
Published in: | Progress in Physical Geography: Earth and Environment |
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Format: | Article in Journal/Newspaper |
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SAGE Publications
1999
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Online Access: | http://eprints.staffs.ac.uk/1741/ https://doi.org/10.1177/030913339902300104 |
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ftustaffordshire:oai:eprints.staffs.ac.uk:1741 2023-05-15T16:21:42+02:00 Controls on the formation and sudden drainage of glacier-impounded lakes: implications for jokulhlaup characteristics TWEED, Fiona Russell, A. J. 1999 http://eprints.staffs.ac.uk/1741/ https://doi.org/10.1177/030913339902300104 unknown SAGE Publications TWEED, Fiona and Russell, A. J. (1999) Controls on the formation and sudden drainage of glacier-impounded lakes: implications for jokulhlaup characteristics. Progress in Physical Geography, 23 (1). pp. 79-110. ISSN 0309-1333 F800 Physical and Terrestrial Geographical and Environmental Sciences Article PeerReviewed 1999 ftustaffordshire https://doi.org/10.1177/030913339902300104 2023-03-02T23:14:36Z Over the past few years there has been an increase in understanding of glacier-impounded or ‘ice-dammed’ lake behaviour. The spectacular jökulhlaup (catastrophic flood) from Grímsvötn, Iceland in November 1996 has both raised the profile of such events and emphasized the need for awareness of the processes involved. This review summarizes the extent of current knowledge of ice-dammed lakes, highlighting key developments and outlining areas of study still subject to difficulties. Controls on ice-dammed lake formation and persistence are identified, and cycles of jökulhlaup activity are related to glacier fluctuations. Ice-dammed lake drainage trigger mechanisms are reviewed and recent progress in the understanding of such mechanisms is emphasized. Controls on jökulhlaup routing and the development and character of jökulhlaup conduits are discussed and recent advances in jökulhlaup prediction, hydrograph modelling and peak discharge estimation are assessed. A process-based schematic model, drawing on published research, links ice-dammed lake occurrence and drainage to jökulhlaup characteristics. It is demonstrated that ice-dammed lake and ice-dam characteristics ultimately control seven key jökulhlaup attributes which determine the potential impact of jökulhlaups on both landscape and human activity in glaciated regions. Article in Journal/Newspaper glacier Iceland Staffordshire University: STORE - Staffordshire Online Repository Dammed Lake ENVELOPE(-68.258,-68.258,68.496,68.496) Progress in Physical Geography: Earth and Environment 23 1 79 110 |
institution |
Open Polar |
collection |
Staffordshire University: STORE - Staffordshire Online Repository |
op_collection_id |
ftustaffordshire |
language |
unknown |
topic |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
spellingShingle |
F800 Physical and Terrestrial Geographical and Environmental Sciences TWEED, Fiona Russell, A. J. Controls on the formation and sudden drainage of glacier-impounded lakes: implications for jokulhlaup characteristics |
topic_facet |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
description |
Over the past few years there has been an increase in understanding of glacier-impounded or ‘ice-dammed’ lake behaviour. The spectacular jökulhlaup (catastrophic flood) from Grímsvötn, Iceland in November 1996 has both raised the profile of such events and emphasized the need for awareness of the processes involved. This review summarizes the extent of current knowledge of ice-dammed lakes, highlighting key developments and outlining areas of study still subject to difficulties. Controls on ice-dammed lake formation and persistence are identified, and cycles of jökulhlaup activity are related to glacier fluctuations. Ice-dammed lake drainage trigger mechanisms are reviewed and recent progress in the understanding of such mechanisms is emphasized. Controls on jökulhlaup routing and the development and character of jökulhlaup conduits are discussed and recent advances in jökulhlaup prediction, hydrograph modelling and peak discharge estimation are assessed. A process-based schematic model, drawing on published research, links ice-dammed lake occurrence and drainage to jökulhlaup characteristics. It is demonstrated that ice-dammed lake and ice-dam characteristics ultimately control seven key jökulhlaup attributes which determine the potential impact of jökulhlaups on both landscape and human activity in glaciated regions. |
format |
Article in Journal/Newspaper |
author |
TWEED, Fiona Russell, A. J. |
author_facet |
TWEED, Fiona Russell, A. J. |
author_sort |
TWEED, Fiona |
title |
Controls on the formation and sudden drainage of glacier-impounded lakes: implications for jokulhlaup characteristics |
title_short |
Controls on the formation and sudden drainage of glacier-impounded lakes: implications for jokulhlaup characteristics |
title_full |
Controls on the formation and sudden drainage of glacier-impounded lakes: implications for jokulhlaup characteristics |
title_fullStr |
Controls on the formation and sudden drainage of glacier-impounded lakes: implications for jokulhlaup characteristics |
title_full_unstemmed |
Controls on the formation and sudden drainage of glacier-impounded lakes: implications for jokulhlaup characteristics |
title_sort |
controls on the formation and sudden drainage of glacier-impounded lakes: implications for jokulhlaup characteristics |
publisher |
SAGE Publications |
publishDate |
1999 |
url |
http://eprints.staffs.ac.uk/1741/ https://doi.org/10.1177/030913339902300104 |
long_lat |
ENVELOPE(-68.258,-68.258,68.496,68.496) |
geographic |
Dammed Lake |
geographic_facet |
Dammed Lake |
genre |
glacier Iceland |
genre_facet |
glacier Iceland |
op_relation |
TWEED, Fiona and Russell, A. J. (1999) Controls on the formation and sudden drainage of glacier-impounded lakes: implications for jokulhlaup characteristics. Progress in Physical Geography, 23 (1). pp. 79-110. ISSN 0309-1333 |
op_doi |
https://doi.org/10.1177/030913339902300104 |
container_title |
Progress in Physical Geography: Earth and Environment |
container_volume |
23 |
container_issue |
1 |
container_start_page |
79 |
op_container_end_page |
110 |
_version_ |
1766009693036085248 |