Changes in thaw lake drainage in the Western Canadian Arctic from 1950 to 2000
Abstract The permafrost of the Western Canadian Arctic has a very high ground ice content. As a result, the vast number of thaw lakes in this area are very sensitive to a changing climate. With thaw lakes prone to either increases in area due to thermokarst processes, or complete drainage in less th...
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crwiley:10.1002/hyp.7179 2024-06-23T07:50:24+00:00 Changes in thaw lake drainage in the Western Canadian Arctic from 1950 to 2000 Marsh, Philip Russell, Mark Pohl, Stefan Haywood, Heather Onclin, Cuyler 2008 http://dx.doi.org/10.1002/hyp.7179 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fhyp.7179 https://onlinelibrary.wiley.com/doi/pdf/10.1002/hyp.7179 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Hydrological Processes volume 23, issue 1, page 145-158 ISSN 0885-6087 1099-1085 journal-article 2008 crwiley https://doi.org/10.1002/hyp.7179 2024-06-11T04:41:45Z Abstract The permafrost of the Western Canadian Arctic has a very high ground ice content. As a result, the vast number of thaw lakes in this area are very sensitive to a changing climate. With thaw lakes prone to either increases in area due to thermokarst processes, or complete drainage in less than one day due to melting of channels through ice‐rich permafrost. After a lake drains, it leaves a topographic basin that is often termed a Drained Thaw Lake Basin (DTLB). An analysis of aerial photographs and topographic maps showed that 41 lakes drained in the study area between 1950 and 2000, for a rate of slightly less than one lake per year. The rate of drainage over three time periods (1950–1973, 1973–1985, 1985–2000), decreased from over 1 lake/year to approximately 0·3 lake/year. The reason for this decrease is not known, but it is hypothesized that it is related to the effect of a warming climate. There is a large spatial variation in DTLBs, with higher number of drained lakes in physiographic areas with poor drainage. It is likely that this variation is related to variations in ground ice. Although previous studies have suggested that lakes drain during periods of high water level, it is likely that a combination of a warm summer, a resulting deep active layer, and a moderately high lake level were responsible for the drainage of a lake in the study area during the summer of 1989. Although this study has documented changes in the rate of lake drainage over a 50‐year period, there is a need for further research to better understand the complex interactions between climate, geomorphology, and hydrology responsible for this change, and to further consider the potential hazard rapid lake drainage poses to future industrial or resource development in the area. Copyright © 2008 John Wiley & Sons, Ltd and Her Majesty the Queen in right of Canada. The contributions of P. Marsh, M. Russell, H. Haywood and C. Onclin belong to the Crown in right of Canada and are reproduced with the permission of Environment ... Article in Journal/Newspaper Arctic Ice permafrost Thermokarst Wiley Online Library Arctic Canada High Lake ENVELOPE(-110.849,-110.849,67.386,67.386) Rapid Lake ENVELOPE(177.619,177.619,52.064,52.064) Hydrological Processes 23 1 145 158 |
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Wiley Online Library |
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Abstract The permafrost of the Western Canadian Arctic has a very high ground ice content. As a result, the vast number of thaw lakes in this area are very sensitive to a changing climate. With thaw lakes prone to either increases in area due to thermokarst processes, or complete drainage in less than one day due to melting of channels through ice‐rich permafrost. After a lake drains, it leaves a topographic basin that is often termed a Drained Thaw Lake Basin (DTLB). An analysis of aerial photographs and topographic maps showed that 41 lakes drained in the study area between 1950 and 2000, for a rate of slightly less than one lake per year. The rate of drainage over three time periods (1950–1973, 1973–1985, 1985–2000), decreased from over 1 lake/year to approximately 0·3 lake/year. The reason for this decrease is not known, but it is hypothesized that it is related to the effect of a warming climate. There is a large spatial variation in DTLBs, with higher number of drained lakes in physiographic areas with poor drainage. It is likely that this variation is related to variations in ground ice. Although previous studies have suggested that lakes drain during periods of high water level, it is likely that a combination of a warm summer, a resulting deep active layer, and a moderately high lake level were responsible for the drainage of a lake in the study area during the summer of 1989. Although this study has documented changes in the rate of lake drainage over a 50‐year period, there is a need for further research to better understand the complex interactions between climate, geomorphology, and hydrology responsible for this change, and to further consider the potential hazard rapid lake drainage poses to future industrial or resource development in the area. Copyright © 2008 John Wiley & Sons, Ltd and Her Majesty the Queen in right of Canada. The contributions of P. Marsh, M. Russell, H. Haywood and C. Onclin belong to the Crown in right of Canada and are reproduced with the permission of Environment ... |
format |
Article in Journal/Newspaper |
author |
Marsh, Philip Russell, Mark Pohl, Stefan Haywood, Heather Onclin, Cuyler |
spellingShingle |
Marsh, Philip Russell, Mark Pohl, Stefan Haywood, Heather Onclin, Cuyler Changes in thaw lake drainage in the Western Canadian Arctic from 1950 to 2000 |
author_facet |
Marsh, Philip Russell, Mark Pohl, Stefan Haywood, Heather Onclin, Cuyler |
author_sort |
Marsh, Philip |
title |
Changes in thaw lake drainage in the Western Canadian Arctic from 1950 to 2000 |
title_short |
Changes in thaw lake drainage in the Western Canadian Arctic from 1950 to 2000 |
title_full |
Changes in thaw lake drainage in the Western Canadian Arctic from 1950 to 2000 |
title_fullStr |
Changes in thaw lake drainage in the Western Canadian Arctic from 1950 to 2000 |
title_full_unstemmed |
Changes in thaw lake drainage in the Western Canadian Arctic from 1950 to 2000 |
title_sort |
changes in thaw lake drainage in the western canadian arctic from 1950 to 2000 |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.1002/hyp.7179 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fhyp.7179 https://onlinelibrary.wiley.com/doi/pdf/10.1002/hyp.7179 |
long_lat |
ENVELOPE(-110.849,-110.849,67.386,67.386) ENVELOPE(177.619,177.619,52.064,52.064) |
geographic |
Arctic Canada High Lake Rapid Lake |
geographic_facet |
Arctic Canada High Lake Rapid Lake |
genre |
Arctic Ice permafrost Thermokarst |
genre_facet |
Arctic Ice permafrost Thermokarst |
op_source |
Hydrological Processes volume 23, issue 1, page 145-158 ISSN 0885-6087 1099-1085 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/hyp.7179 |
container_title |
Hydrological Processes |
container_volume |
23 |
container_issue |
1 |
container_start_page |
145 |
op_container_end_page |
158 |
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1802641279365939200 |