Multi-year impacts of permafrost disturbance and thermal perturbation on High Arctic stream chemistry

Permafrost disturbances (such as active layer detachment (ALD) slides) and thermal perturbation (deep ground thaw from high soil temperatures) alter Arctic surface water chemistry. However, the potential multi-year impacts on water chemistry and the ultimate recovery time are not well understood. Th...

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Published in:Arctic Science
Main Authors: Daniel Lamhonwah, M. J. Lafrenière, S. F. Lamoureux, B. B. Wolfe
Format: Article in Journal/Newspaper
Language:English
French
Published: Canadian Science Publishing 2017
Subjects:
geo
Online Access:https://doi.org/10.1139/as-2016-0024
https://doaj.org/article/4c560a60700d4718a9f86d6fad2b3724
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spelling fttriple:oai:gotriple.eu:oai:doaj.org/article:4c560a60700d4718a9f86d6fad2b3724 2023-05-15T14:22:24+02:00 Multi-year impacts of permafrost disturbance and thermal perturbation on High Arctic stream chemistry Daniel Lamhonwah M. J. Lafrenière S. F. Lamoureux B. B. Wolfe 2017-07-01 https://doi.org/10.1139/as-2016-0024 https://doaj.org/article/4c560a60700d4718a9f86d6fad2b3724 en fr eng fre Canadian Science Publishing doi:10.1139/as-2016-0024 2368-7460 https://doaj.org/article/4c560a60700d4718a9f86d6fad2b3724 undefined Arctic Science, Vol 3, Iss 2, Pp 254-276 (2017) permafrost disturbance permafrost thaw solutes streamflow active layer detachment envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2017 fttriple https://doi.org/10.1139/as-2016-0024 2023-01-22T19:28:05Z Permafrost disturbances (such as active layer detachment (ALD) slides) and thermal perturbation (deep ground thaw from high soil temperatures) alter Arctic surface water chemistry. However, the potential multi-year impacts on water chemistry and the ultimate recovery time are not well understood. This study evaluates the impacts on surface waters and recovery following disturbance of a High Arctic catchment in 2007 from ALDs. We measured ion concentrations and stable isotopes in surface waters collected between 2006 and 2014 from paired catchments — one disturbed and the other not. The years 2007 and 2012 were exceptionally warm and represent unusual thermal perturbation for both catchments. Results indicate that the exposure and mobilization of soluble ions in near surface soil is a key control over dissolved ion concentrations and composition following ALDs. Runoff in the disturbed catchment shows increased total dissolved solute (TDS) concentrations and seasonal TDS fluxes and changes to the relative composition of individual ions in surface water. These impacts persisted for the 7 year study duration after disturbance and are consistent with the thawing of the solute-rich transient layer and upper permafrost. Thermal perturbation increased TDS concentrations and seasonal fluxes in runoff for up to 2 years, as ions released from ground thaw appear to be available for flushing in subsequent summers. Article in Journal/Newspaper Arctic Arctic permafrost Unknown Arctic Arctic Science 3 2 254 276
institution Open Polar
collection Unknown
op_collection_id fttriple
language English
French
topic permafrost disturbance
permafrost thaw
solutes
streamflow
active layer detachment
envir
geo
spellingShingle permafrost disturbance
permafrost thaw
solutes
streamflow
active layer detachment
envir
geo
Daniel Lamhonwah
M. J. Lafrenière
S. F. Lamoureux
B. B. Wolfe
Multi-year impacts of permafrost disturbance and thermal perturbation on High Arctic stream chemistry
topic_facet permafrost disturbance
permafrost thaw
solutes
streamflow
active layer detachment
envir
geo
description Permafrost disturbances (such as active layer detachment (ALD) slides) and thermal perturbation (deep ground thaw from high soil temperatures) alter Arctic surface water chemistry. However, the potential multi-year impacts on water chemistry and the ultimate recovery time are not well understood. This study evaluates the impacts on surface waters and recovery following disturbance of a High Arctic catchment in 2007 from ALDs. We measured ion concentrations and stable isotopes in surface waters collected between 2006 and 2014 from paired catchments — one disturbed and the other not. The years 2007 and 2012 were exceptionally warm and represent unusual thermal perturbation for both catchments. Results indicate that the exposure and mobilization of soluble ions in near surface soil is a key control over dissolved ion concentrations and composition following ALDs. Runoff in the disturbed catchment shows increased total dissolved solute (TDS) concentrations and seasonal TDS fluxes and changes to the relative composition of individual ions in surface water. These impacts persisted for the 7 year study duration after disturbance and are consistent with the thawing of the solute-rich transient layer and upper permafrost. Thermal perturbation increased TDS concentrations and seasonal fluxes in runoff for up to 2 years, as ions released from ground thaw appear to be available for flushing in subsequent summers.
format Article in Journal/Newspaper
author Daniel Lamhonwah
M. J. Lafrenière
S. F. Lamoureux
B. B. Wolfe
author_facet Daniel Lamhonwah
M. J. Lafrenière
S. F. Lamoureux
B. B. Wolfe
author_sort Daniel Lamhonwah
title Multi-year impacts of permafrost disturbance and thermal perturbation on High Arctic stream chemistry
title_short Multi-year impacts of permafrost disturbance and thermal perturbation on High Arctic stream chemistry
title_full Multi-year impacts of permafrost disturbance and thermal perturbation on High Arctic stream chemistry
title_fullStr Multi-year impacts of permafrost disturbance and thermal perturbation on High Arctic stream chemistry
title_full_unstemmed Multi-year impacts of permafrost disturbance and thermal perturbation on High Arctic stream chemistry
title_sort multi-year impacts of permafrost disturbance and thermal perturbation on high arctic stream chemistry
publisher Canadian Science Publishing
publishDate 2017
url https://doi.org/10.1139/as-2016-0024
https://doaj.org/article/4c560a60700d4718a9f86d6fad2b3724
geographic Arctic
geographic_facet Arctic
genre Arctic
Arctic
permafrost
genre_facet Arctic
Arctic
permafrost
op_source Arctic Science, Vol 3, Iss 2, Pp 254-276 (2017)
op_relation doi:10.1139/as-2016-0024
2368-7460
https://doaj.org/article/4c560a60700d4718a9f86d6fad2b3724
op_rights undefined
op_doi https://doi.org/10.1139/as-2016-0024
container_title Arctic Science
container_volume 3
container_issue 2
container_start_page 254
op_container_end_page 276
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