Permafrost degradation as a control on hydrogeological regime shifts in a warming climate
Using numerical models, we evaluate hydrogeological regime changes in high-latitude river basins under conditions of ground surface warming. These models describe transient heat- and fluid flow coupled to the hydrogeological impacts of phase-changes from ice to liquid water. We consider an idealized...
Published in: | Journal of Geophysical Research: Earth Surface |
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ftvuamstcris:oai:research.vu.nl:publications/44f9bc88-de06-4f9f-a70e-cdcca7d49e64 2024-06-23T07:50:36+00:00 Permafrost degradation as a control on hydrogeological regime shifts in a warming climate Bense, V.F. Kooi, H. Ferguson, G. Read, T. 2012 application/pdf https://research.vu.nl/en/publications/44f9bc88-de06-4f9f-a70e-cdcca7d49e64 https://doi.org/10.1029/2011JF002143 https://research.vu.nl/ws/files/3153009/293545.pdf eng eng https://research.vu.nl/en/publications/44f9bc88-de06-4f9f-a70e-cdcca7d49e64 info:eu-repo/semantics/openAccess Bense , V F , Kooi , H , Ferguson , G & Read , T 2012 , ' Permafrost degradation as a control on hydrogeological regime shifts in a warming climate ' , Journal of Geophysical Research , vol. 117 , no. F03036 . https://doi.org/10.1029/2011JF002143 /dk/atira/pure/sustainabledevelopmentgoals/clean_water_and_sanitation name=SDG 6 - Clean Water and Sanitation article 2012 ftvuamstcris https://doi.org/10.1029/2011JF002143 2024-06-13T00:09:35Z Using numerical models, we evaluate hydrogeological regime changes in high-latitude river basins under conditions of ground surface warming. These models describe transient heat- and fluid flow coupled to the hydrogeological impacts of phase-changes from ice to liquid water. We consider an idealized unconsolidated sedimentary aquifer system in which groundwater flow is driven by topography, representing a series of small drainage basins in riverine terrain of relatively subdued topography. Various temporal and spatial surface temperature conditions are considered to control the initial permafrost distributions for the simulations. The simulated rates of increase in groundwater contribution to streamflow during and after permafrost thaw, are in the order of magnitude comparable to hydrogeological regime changes over the past decades as reported for several (sub-)Arctic rivers. The simulations further show that two distinct features of the subsurface response control the temporal evolution of base flow increase: (1) shifts in aquifer permeability architecture during permafrost degradation and (2) uptake of water into aquifer storage when sub-permafrost hydraulic heads rise. Model analysis shows that the latter process delays base flow increase by several decades to centuries. In order to evaluate the relative importance of both processes in natural systems, the current hydraulic regime of sub-permafrost aquifer systems as well as patterns of permafrost heterogeneity, taliks and their hydraulic connectivity are insufficiently known. © 2012. American Geophysical Union. All Rights Reserved. Article in Journal/Newspaper Arctic Ice permafrost Vrije Universiteit Amsterdam (VU): Research Portal Arctic Journal of Geophysical Research: Earth Surface 117 F3 n/a n/a |
institution |
Open Polar |
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Vrije Universiteit Amsterdam (VU): Research Portal |
op_collection_id |
ftvuamstcris |
language |
English |
topic |
/dk/atira/pure/sustainabledevelopmentgoals/clean_water_and_sanitation name=SDG 6 - Clean Water and Sanitation |
spellingShingle |
/dk/atira/pure/sustainabledevelopmentgoals/clean_water_and_sanitation name=SDG 6 - Clean Water and Sanitation Bense, V.F. Kooi, H. Ferguson, G. Read, T. Permafrost degradation as a control on hydrogeological regime shifts in a warming climate |
topic_facet |
/dk/atira/pure/sustainabledevelopmentgoals/clean_water_and_sanitation name=SDG 6 - Clean Water and Sanitation |
description |
Using numerical models, we evaluate hydrogeological regime changes in high-latitude river basins under conditions of ground surface warming. These models describe transient heat- and fluid flow coupled to the hydrogeological impacts of phase-changes from ice to liquid water. We consider an idealized unconsolidated sedimentary aquifer system in which groundwater flow is driven by topography, representing a series of small drainage basins in riverine terrain of relatively subdued topography. Various temporal and spatial surface temperature conditions are considered to control the initial permafrost distributions for the simulations. The simulated rates of increase in groundwater contribution to streamflow during and after permafrost thaw, are in the order of magnitude comparable to hydrogeological regime changes over the past decades as reported for several (sub-)Arctic rivers. The simulations further show that two distinct features of the subsurface response control the temporal evolution of base flow increase: (1) shifts in aquifer permeability architecture during permafrost degradation and (2) uptake of water into aquifer storage when sub-permafrost hydraulic heads rise. Model analysis shows that the latter process delays base flow increase by several decades to centuries. In order to evaluate the relative importance of both processes in natural systems, the current hydraulic regime of sub-permafrost aquifer systems as well as patterns of permafrost heterogeneity, taliks and their hydraulic connectivity are insufficiently known. © 2012. American Geophysical Union. All Rights Reserved. |
format |
Article in Journal/Newspaper |
author |
Bense, V.F. Kooi, H. Ferguson, G. Read, T. |
author_facet |
Bense, V.F. Kooi, H. Ferguson, G. Read, T. |
author_sort |
Bense, V.F. |
title |
Permafrost degradation as a control on hydrogeological regime shifts in a warming climate |
title_short |
Permafrost degradation as a control on hydrogeological regime shifts in a warming climate |
title_full |
Permafrost degradation as a control on hydrogeological regime shifts in a warming climate |
title_fullStr |
Permafrost degradation as a control on hydrogeological regime shifts in a warming climate |
title_full_unstemmed |
Permafrost degradation as a control on hydrogeological regime shifts in a warming climate |
title_sort |
permafrost degradation as a control on hydrogeological regime shifts in a warming climate |
publishDate |
2012 |
url |
https://research.vu.nl/en/publications/44f9bc88-de06-4f9f-a70e-cdcca7d49e64 https://doi.org/10.1029/2011JF002143 https://research.vu.nl/ws/files/3153009/293545.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice permafrost |
genre_facet |
Arctic Ice permafrost |
op_source |
Bense , V F , Kooi , H , Ferguson , G & Read , T 2012 , ' Permafrost degradation as a control on hydrogeological regime shifts in a warming climate ' , Journal of Geophysical Research , vol. 117 , no. F03036 . https://doi.org/10.1029/2011JF002143 |
op_relation |
https://research.vu.nl/en/publications/44f9bc88-de06-4f9f-a70e-cdcca7d49e64 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2011JF002143 |
container_title |
Journal of Geophysical Research: Earth Surface |
container_volume |
117 |
container_issue |
F3 |
container_start_page |
n/a |
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1802641515337482240 |