Tapped lakes as sediment traps in an Arctic delta
Lakes within the Colville River delta in northern Alaska, USA, vary in size from small ponds created by ice-wedge growth to thaw lakes that are as much as three kilometres long and ten metres deep. As the river migrates, lake edges are breached and the lakes are drained. Such lake tapping is aided b...
Published in: | Proceedings of the International Association of Hydrological Sciences |
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Online Access: | https://doi.org/10.5194/piahs-367-407-2015 https://piahs.copernicus.org/articles/367/407/2015/ |
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ftcopernicus:oai:publications.copernicus.org:piahs46561 2023-05-15T15:03:14+02:00 Tapped lakes as sediment traps in an Arctic delta Walker, J. McGraw, M. 2018-01-15 application/pdf https://doi.org/10.5194/piahs-367-407-2015 https://piahs.copernicus.org/articles/367/407/2015/ eng eng doi:10.5194/piahs-367-407-2015 https://piahs.copernicus.org/articles/367/407/2015/ eISSN: 2199-899X Text 2018 ftcopernicus https://doi.org/10.5194/piahs-367-407-2015 2020-07-20T16:24:44Z Lakes within the Colville River delta in northern Alaska, USA, vary in size from small ponds created by ice-wedge growth to thaw lakes that are as much as three kilometres long and ten metres deep. As the river migrates, lake edges are breached and the lakes are drained. Such lake tapping is aided by permafrost thaw and ice wedge melt and, in the case of the larger lakes, by wave action within them. Once a lake is tapped, it drains rapidly creating a deep scour hole at its entrance and from then on it is subject to the varying stages and discharge of the river. During flooding, when the river is transporting its largest amount of sediment, the tapped lakes become settling basins and rapidly fill. The Colville River delta has lakes in all stages from freshly breached to those that are now being destroyed by channel migration. Text Arctic Ice permafrost wedge* Alaska Copernicus Publications: E-Journals Arctic Proceedings of the International Association of Hydrological Sciences 367 407 412 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
Lakes within the Colville River delta in northern Alaska, USA, vary in size from small ponds created by ice-wedge growth to thaw lakes that are as much as three kilometres long and ten metres deep. As the river migrates, lake edges are breached and the lakes are drained. Such lake tapping is aided by permafrost thaw and ice wedge melt and, in the case of the larger lakes, by wave action within them. Once a lake is tapped, it drains rapidly creating a deep scour hole at its entrance and from then on it is subject to the varying stages and discharge of the river. During flooding, when the river is transporting its largest amount of sediment, the tapped lakes become settling basins and rapidly fill. The Colville River delta has lakes in all stages from freshly breached to those that are now being destroyed by channel migration. |
format |
Text |
author |
Walker, J. McGraw, M. |
spellingShingle |
Walker, J. McGraw, M. Tapped lakes as sediment traps in an Arctic delta |
author_facet |
Walker, J. McGraw, M. |
author_sort |
Walker, J. |
title |
Tapped lakes as sediment traps in an Arctic delta |
title_short |
Tapped lakes as sediment traps in an Arctic delta |
title_full |
Tapped lakes as sediment traps in an Arctic delta |
title_fullStr |
Tapped lakes as sediment traps in an Arctic delta |
title_full_unstemmed |
Tapped lakes as sediment traps in an Arctic delta |
title_sort |
tapped lakes as sediment traps in an arctic delta |
publishDate |
2018 |
url |
https://doi.org/10.5194/piahs-367-407-2015 https://piahs.copernicus.org/articles/367/407/2015/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice permafrost wedge* Alaska |
genre_facet |
Arctic Ice permafrost wedge* Alaska |
op_source |
eISSN: 2199-899X |
op_relation |
doi:10.5194/piahs-367-407-2015 https://piahs.copernicus.org/articles/367/407/2015/ |
op_doi |
https://doi.org/10.5194/piahs-367-407-2015 |
container_title |
Proceedings of the International Association of Hydrological Sciences |
container_volume |
367 |
container_start_page |
407 |
op_container_end_page |
412 |
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1766335114798694400 |