Estimates of the magnitude of glacier outburst floods from Lake Donjek, Yukon Territory, Canada
Lake Donjek was a large reservoir formed when Donjek Glacier dammed Donjek River. Although the basin is empty at present, a minor advance of Donjek Glacier could again dam the river and impound approximately 234 × 10 6 m 3 of water. Ice-dammed lakes are commonly unstable, giving rise to destructive...
Published in: | Canadian Journal of Earth Sciences |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
1981
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/e81-136 http://www.nrcresearchpress.com/doi/pdf/10.1139/e81-136 |
id |
crcansciencepubl:10.1139/e81-136 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/e81-136 2024-09-15T18:08:00+00:00 Estimates of the magnitude of glacier outburst floods from Lake Donjek, Yukon Territory, Canada Clarke, G. K. C. Mathews, W. H. 1981 http://dx.doi.org/10.1139/e81-136 http://www.nrcresearchpress.com/doi/pdf/10.1139/e81-136 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 18, issue 9, page 1452-1463 ISSN 0008-4077 1480-3313 journal-article 1981 crcansciencepubl https://doi.org/10.1139/e81-136 2024-09-05T04:11:14Z Lake Donjek was a large reservoir formed when Donjek Glacier dammed Donjek River. Although the basin is empty at present, a minor advance of Donjek Glacier could again dam the river and impound approximately 234 × 10 6 m 3 of water. Ice-dammed lakes are commonly unstable, giving rise to destructive floods called "jökulhlaups," or glacier outburst floods. Our aim in this paper is to estimate the likely magnitude of outburst floods from Lake Donjek so that the danger to downstream installations can be assessed.In attempting to estimate the maximum discharge from Lake Donjek, we use both the empirical formula of Clague and Mathews and a computer simulation model based on theoretical contributions by Nye. The September 1967 outburst flood from Summit Lake, B.C. is taken as a reference event against which predictions of the simulation model are compared. Our estimates for peak discharge from Lake Donjek lie in the range 677–5968 m 3 s −1 with values in the range 3968–5968 m 3 s −1 being considered most probable. Article in Journal/Newspaper glacier* Yukon Canadian Science Publishing Canadian Journal of Earth Sciences 18 9 1452 1463 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
Lake Donjek was a large reservoir formed when Donjek Glacier dammed Donjek River. Although the basin is empty at present, a minor advance of Donjek Glacier could again dam the river and impound approximately 234 × 10 6 m 3 of water. Ice-dammed lakes are commonly unstable, giving rise to destructive floods called "jökulhlaups," or glacier outburst floods. Our aim in this paper is to estimate the likely magnitude of outburst floods from Lake Donjek so that the danger to downstream installations can be assessed.In attempting to estimate the maximum discharge from Lake Donjek, we use both the empirical formula of Clague and Mathews and a computer simulation model based on theoretical contributions by Nye. The September 1967 outburst flood from Summit Lake, B.C. is taken as a reference event against which predictions of the simulation model are compared. Our estimates for peak discharge from Lake Donjek lie in the range 677–5968 m 3 s −1 with values in the range 3968–5968 m 3 s −1 being considered most probable. |
format |
Article in Journal/Newspaper |
author |
Clarke, G. K. C. Mathews, W. H. |
spellingShingle |
Clarke, G. K. C. Mathews, W. H. Estimates of the magnitude of glacier outburst floods from Lake Donjek, Yukon Territory, Canada |
author_facet |
Clarke, G. K. C. Mathews, W. H. |
author_sort |
Clarke, G. K. C. |
title |
Estimates of the magnitude of glacier outburst floods from Lake Donjek, Yukon Territory, Canada |
title_short |
Estimates of the magnitude of glacier outburst floods from Lake Donjek, Yukon Territory, Canada |
title_full |
Estimates of the magnitude of glacier outburst floods from Lake Donjek, Yukon Territory, Canada |
title_fullStr |
Estimates of the magnitude of glacier outburst floods from Lake Donjek, Yukon Territory, Canada |
title_full_unstemmed |
Estimates of the magnitude of glacier outburst floods from Lake Donjek, Yukon Territory, Canada |
title_sort |
estimates of the magnitude of glacier outburst floods from lake donjek, yukon territory, canada |
publisher |
Canadian Science Publishing |
publishDate |
1981 |
url |
http://dx.doi.org/10.1139/e81-136 http://www.nrcresearchpress.com/doi/pdf/10.1139/e81-136 |
genre |
glacier* Yukon |
genre_facet |
glacier* Yukon |
op_source |
Canadian Journal of Earth Sciences volume 18, issue 9, page 1452-1463 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e81-136 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
18 |
container_issue |
9 |
container_start_page |
1452 |
op_container_end_page |
1463 |
_version_ |
1810445357233995776 |