Impact of Climatic Forces on the Thawing Process of a Retrogressive Thaw Slump and its Sediment and Carbon Release on the Yukon Coast, Canada
The Canadian Yukon Coast is an ice-rich permafrost coast. This is a fragile ecosystem and reacts strongly to changing environmental conditions. Retrogressive Thaw Slumps are thermal erosion features and are commonly found along this coast. They release large quantities of sediment and organic materi...
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ftawi:oai:epic.awi.de:35888 2023-05-15T15:12:11+02:00 Impact of Climatic Forces on the Thawing Process of a Retrogressive Thaw Slump and its Sediment and Carbon Release on the Yukon Coast, Canada Weege, Stefanie Lantuit, Hugues Fritz, Michael Obu, Jaroslav Radosavljevic, Boris 2014-06-19 https://epic.awi.de/id/eprint/35888/ https://hdl.handle.net/10013/epic.43799 unknown Weege, S. , Lantuit, H. orcid:0000-0003-1497-6760 , Fritz, M. orcid:0000-0003-4591-7325 , Obu, J. and Radosavljevic, B. orcid:0000-0001-6095-9078 (2014) Impact of Climatic Forces on the Thawing Process of a Retrogressive Thaw Slump and its Sediment and Carbon Release on the Yukon Coast, Canada , 4th European Conference on Permafrost, Évora, Portugal, 18 June 2014 - 21 June 2014 . hdl:10013/epic.43799 EPIC34th European Conference on Permafrost, Évora, Portugal, 2014-06-18-2014-06-21 Conference notRev 2014 ftawi 2021-12-24T15:39:40Z The Canadian Yukon Coast is an ice-rich permafrost coast. This is a fragile ecosystem and reacts strongly to changing environmental conditions. Retrogressive Thaw Slumps are thermal erosion features and are commonly found along this coast. They release large quantities of sediment and organic material to the nearshore zone. Arctic temperatures are projected to increase over the next century. As a result these Retrogressive Thaw Slumps are predicted to become more active and therefore release greater quantities of sediment, organic carbon and nutrients. However, a thorough understanding is lacking of the climatic forces of the erosion process of Retrogressive Thaw Slumps. In the summers of 2012 and 2013 research was conducted in a Retrogressive Thaw Slump on Herschel Island off the Yukon Coast in North-West Canada. The thawing ice-rich headwall measures over 30 m in height and 440 m in width, and undergoes erosion at a rate exceeding 9 m/yr. Two weather stations were erected, one within the close vicinity of the thawing headwall and one above the Retrogressive Thaw Slump, on the undisturbed tundra. These were measuring incoming solar radiation, temperature, precipitation and wind speed determining the microclimatic effects on the thawing of the headwall. A cut-throat flume was installed in the outflow of the Retrogressive Thaw Slump, measuring the meltwater-sediment discharge. Meltwater-sediment samples were collected in the outflow on an hourly basis and tested for pH, conductivity, sediment and organic carbon content. Data of the cut throat flume and weather stations were analysed. They show that discharge from the Retrogressive Thaw Slump is characterized by a strong intra-seasonal, as well as inter- and intra-diurnal variability. This correlates with changing microclimatic conditions, specifically temperature and precipitation Conference Object Arctic Herschel Herschel Island Ice permafrost Tundra Yukon Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Canada Herschel Island ENVELOPE(-139.089,-139.089,69.583,69.583) Yukon |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
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unknown |
description |
The Canadian Yukon Coast is an ice-rich permafrost coast. This is a fragile ecosystem and reacts strongly to changing environmental conditions. Retrogressive Thaw Slumps are thermal erosion features and are commonly found along this coast. They release large quantities of sediment and organic material to the nearshore zone. Arctic temperatures are projected to increase over the next century. As a result these Retrogressive Thaw Slumps are predicted to become more active and therefore release greater quantities of sediment, organic carbon and nutrients. However, a thorough understanding is lacking of the climatic forces of the erosion process of Retrogressive Thaw Slumps. In the summers of 2012 and 2013 research was conducted in a Retrogressive Thaw Slump on Herschel Island off the Yukon Coast in North-West Canada. The thawing ice-rich headwall measures over 30 m in height and 440 m in width, and undergoes erosion at a rate exceeding 9 m/yr. Two weather stations were erected, one within the close vicinity of the thawing headwall and one above the Retrogressive Thaw Slump, on the undisturbed tundra. These were measuring incoming solar radiation, temperature, precipitation and wind speed determining the microclimatic effects on the thawing of the headwall. A cut-throat flume was installed in the outflow of the Retrogressive Thaw Slump, measuring the meltwater-sediment discharge. Meltwater-sediment samples were collected in the outflow on an hourly basis and tested for pH, conductivity, sediment and organic carbon content. Data of the cut throat flume and weather stations were analysed. They show that discharge from the Retrogressive Thaw Slump is characterized by a strong intra-seasonal, as well as inter- and intra-diurnal variability. This correlates with changing microclimatic conditions, specifically temperature and precipitation |
format |
Conference Object |
author |
Weege, Stefanie Lantuit, Hugues Fritz, Michael Obu, Jaroslav Radosavljevic, Boris |
spellingShingle |
Weege, Stefanie Lantuit, Hugues Fritz, Michael Obu, Jaroslav Radosavljevic, Boris Impact of Climatic Forces on the Thawing Process of a Retrogressive Thaw Slump and its Sediment and Carbon Release on the Yukon Coast, Canada |
author_facet |
Weege, Stefanie Lantuit, Hugues Fritz, Michael Obu, Jaroslav Radosavljevic, Boris |
author_sort |
Weege, Stefanie |
title |
Impact of Climatic Forces on the Thawing Process of a Retrogressive Thaw Slump and its Sediment and Carbon Release on the Yukon Coast, Canada |
title_short |
Impact of Climatic Forces on the Thawing Process of a Retrogressive Thaw Slump and its Sediment and Carbon Release on the Yukon Coast, Canada |
title_full |
Impact of Climatic Forces on the Thawing Process of a Retrogressive Thaw Slump and its Sediment and Carbon Release on the Yukon Coast, Canada |
title_fullStr |
Impact of Climatic Forces on the Thawing Process of a Retrogressive Thaw Slump and its Sediment and Carbon Release on the Yukon Coast, Canada |
title_full_unstemmed |
Impact of Climatic Forces on the Thawing Process of a Retrogressive Thaw Slump and its Sediment and Carbon Release on the Yukon Coast, Canada |
title_sort |
impact of climatic forces on the thawing process of a retrogressive thaw slump and its sediment and carbon release on the yukon coast, canada |
publishDate |
2014 |
url |
https://epic.awi.de/id/eprint/35888/ https://hdl.handle.net/10013/epic.43799 |
long_lat |
ENVELOPE(-139.089,-139.089,69.583,69.583) |
geographic |
Arctic Canada Herschel Island Yukon |
geographic_facet |
Arctic Canada Herschel Island Yukon |
genre |
Arctic Herschel Herschel Island Ice permafrost Tundra Yukon |
genre_facet |
Arctic Herschel Herschel Island Ice permafrost Tundra Yukon |
op_source |
EPIC34th European Conference on Permafrost, Évora, Portugal, 2014-06-18-2014-06-21 |
op_relation |
Weege, S. , Lantuit, H. orcid:0000-0003-1497-6760 , Fritz, M. orcid:0000-0003-4591-7325 , Obu, J. and Radosavljevic, B. orcid:0000-0001-6095-9078 (2014) Impact of Climatic Forces on the Thawing Process of a Retrogressive Thaw Slump and its Sediment and Carbon Release on the Yukon Coast, Canada , 4th European Conference on Permafrost, Évora, Portugal, 18 June 2014 - 21 June 2014 . hdl:10013/epic.43799 |
_version_ |
1766342901556576256 |