Effects of thermo-erosion gullying on hydrologic flow networks, discharge and soil loss
Thermo-erosion gullies in continuous permafrost regions where ice-wedge polygons are widespread contribute and change the drainage of periglacial landscapes. Gullying processes are causing long-term impacts to the Arctic landscape such as drainage network restructuring, permafrost erosion, sediment...
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ftdoajarticles:oai:doaj.org/article:b63eaaa74203494da4fc5657f41fa4e3 2023-09-05T13:17:18+02:00 Effects of thermo-erosion gullying on hydrologic flow networks, discharge and soil loss Etienne Godin Daniel Fortier Stéphanie Coulombe 2014-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/9/10/105010 https://doaj.org/article/b63eaaa74203494da4fc5657f41fa4e3 EN eng IOP Publishing https://doi.org/10.1088/1748-9326/9/10/105010 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/9/10/105010 1748-9326 https://doaj.org/article/b63eaaa74203494da4fc5657f41fa4e3 Environmental Research Letters, Vol 9, Iss 10, p 105010 (2014) permafrost hydrologic connectivity arctic hydrology ice-wedges gullies wetland Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2014 ftdoajarticles https://doi.org/10.1088/1748-9326/9/10/105010 2023-08-13T00:37:25Z Thermo-erosion gullies in continuous permafrost regions where ice-wedge polygons are widespread contribute and change the drainage of periglacial landscapes. Gullying processes are causing long-term impacts to the Arctic landscape such as drainage network restructuring, permafrost erosion, sediment transport. Between 2009 and 2013, 35 gullies were mapped in a polygon terrace in the valley of the Glacier C-79 on Bylot Island, Nunavut (Canada), one of which was monitored for its hydrology. A gully (R08p) initiated in 1999 in a low-center polygon terrace. Between 1999 and 2013, 202 polygons over a surface of 28 891 m ^2 were breached by gullying. Overall, 1401 polygons were similarly breached on the terrace in the valley before 2013. R08p is fed by a 1.74 km ^2 watershed and the hydrological regime is characterized by peak flows of 0.69 m ^3 s ^−1 and a cumulative volume of 229 662 m ^3 for 2013. Historic aerial photography from 1972 and recent field surveys showed a change in the paths of water tracks and an increase in channelized flow in the gully area from none to 35% of the overall flow path of the section. The overall eroded area for the studied gullies in the valley up to 2013 was estimated at 158 000 m ^2 and a potential volume close to 200 000 m ^3 . Gullying processes increased drainage of wetlands and the hydrological connectivity in the valley, while lowering residence time of water near gullied areas. Article in Journal/Newspaper Arctic Bylot Island glacier* Ice Nunavut permafrost wedge* Directory of Open Access Journals: DOAJ Articles Arctic Bylot Island Canada Nunavut The Gully ENVELOPE(-57.731,-57.731,51.567,51.567) Environmental Research Letters 9 10 105010 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
permafrost hydrologic connectivity arctic hydrology ice-wedges gullies wetland Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
permafrost hydrologic connectivity arctic hydrology ice-wedges gullies wetland Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 Etienne Godin Daniel Fortier Stéphanie Coulombe Effects of thermo-erosion gullying on hydrologic flow networks, discharge and soil loss |
topic_facet |
permafrost hydrologic connectivity arctic hydrology ice-wedges gullies wetland Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
Thermo-erosion gullies in continuous permafrost regions where ice-wedge polygons are widespread contribute and change the drainage of periglacial landscapes. Gullying processes are causing long-term impacts to the Arctic landscape such as drainage network restructuring, permafrost erosion, sediment transport. Between 2009 and 2013, 35 gullies were mapped in a polygon terrace in the valley of the Glacier C-79 on Bylot Island, Nunavut (Canada), one of which was monitored for its hydrology. A gully (R08p) initiated in 1999 in a low-center polygon terrace. Between 1999 and 2013, 202 polygons over a surface of 28 891 m ^2 were breached by gullying. Overall, 1401 polygons were similarly breached on the terrace in the valley before 2013. R08p is fed by a 1.74 km ^2 watershed and the hydrological regime is characterized by peak flows of 0.69 m ^3 s ^−1 and a cumulative volume of 229 662 m ^3 for 2013. Historic aerial photography from 1972 and recent field surveys showed a change in the paths of water tracks and an increase in channelized flow in the gully area from none to 35% of the overall flow path of the section. The overall eroded area for the studied gullies in the valley up to 2013 was estimated at 158 000 m ^2 and a potential volume close to 200 000 m ^3 . Gullying processes increased drainage of wetlands and the hydrological connectivity in the valley, while lowering residence time of water near gullied areas. |
format |
Article in Journal/Newspaper |
author |
Etienne Godin Daniel Fortier Stéphanie Coulombe |
author_facet |
Etienne Godin Daniel Fortier Stéphanie Coulombe |
author_sort |
Etienne Godin |
title |
Effects of thermo-erosion gullying on hydrologic flow networks, discharge and soil loss |
title_short |
Effects of thermo-erosion gullying on hydrologic flow networks, discharge and soil loss |
title_full |
Effects of thermo-erosion gullying on hydrologic flow networks, discharge and soil loss |
title_fullStr |
Effects of thermo-erosion gullying on hydrologic flow networks, discharge and soil loss |
title_full_unstemmed |
Effects of thermo-erosion gullying on hydrologic flow networks, discharge and soil loss |
title_sort |
effects of thermo-erosion gullying on hydrologic flow networks, discharge and soil loss |
publisher |
IOP Publishing |
publishDate |
2014 |
url |
https://doi.org/10.1088/1748-9326/9/10/105010 https://doaj.org/article/b63eaaa74203494da4fc5657f41fa4e3 |
long_lat |
ENVELOPE(-57.731,-57.731,51.567,51.567) |
geographic |
Arctic Bylot Island Canada Nunavut The Gully |
geographic_facet |
Arctic Bylot Island Canada Nunavut The Gully |
genre |
Arctic Bylot Island glacier* Ice Nunavut permafrost wedge* |
genre_facet |
Arctic Bylot Island glacier* Ice Nunavut permafrost wedge* |
op_source |
Environmental Research Letters, Vol 9, Iss 10, p 105010 (2014) |
op_relation |
https://doi.org/10.1088/1748-9326/9/10/105010 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/9/10/105010 1748-9326 https://doaj.org/article/b63eaaa74203494da4fc5657f41fa4e3 |
op_doi |
https://doi.org/10.1088/1748-9326/9/10/105010 |
container_title |
Environmental Research Letters |
container_volume |
9 |
container_issue |
10 |
container_start_page |
105010 |
_version_ |
1776198518879289344 |