Spatial and seasonal variability of polygonal tundra water balance: Lena River Delta, northern Siberia (Russia)
The summer water balance of a typical Siberian polygonal tundra catchment is investigated in order to identify the spatial and temporal dynamics of its main hydrological processes. The results show that, besides precipitation and evapotranspiration, lateral flow considerably influences the site-spec...
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ftunivarkansas:oai:scholarworks.uark.edu:baegpub-1005 2023-11-12T04:18:29+01:00 Spatial and seasonal variability of polygonal tundra water balance: Lena River Delta, northern Siberia (Russia) Helbig, Manuel Boike, Julia Langer, Moritz Schreiber, Peter Runkle, Benjamin R. K. Kutzbach, Lars 2013-01-03T08:00:00Z https://scholarworks.uark.edu/baegpub/6 https://doi.org/10.1007/s10040-012-0933-4 unknown ScholarWorks@UARK https://scholarworks.uark.edu/baegpub/6 doi:10.1007/s10040-012-0933-4 Biological and Agricultural Engineering Faculty Publications and Presentations Water balance permafrost heterogeneity wetlands Russia Atmospheric Sciences Fresh Water Studies Terrestrial and Aquatic Ecology text 2013 ftunivarkansas https://doi.org/10.1007/s10040-012-0933-4 2023-10-30T09:47:16Z The summer water balance of a typical Siberian polygonal tundra catchment is investigated in order to identify the spatial and temporal dynamics of its main hydrological processes. The results show that, besides precipitation and evapotranspiration, lateral flow considerably influences the site-specific hydrological conditions. The prominent microtopography of the polygonal tundra strongly controls lateral flow and storage behaviour of the investigated catchment. Intact rims of low-centred polygons build hydrological barriers, which release storage water later in summer than polygons with degraded rims and troughs above degraded ice wedges. The barrier function of rims is strongly controlled by soil thaw, which opens new subsurface flow paths and increases subsurface hydrological connectivity. Therefore, soil thaw dynamics determine the magnitude and timing of subsurface outflow and the redistribution of storage within the catchment. Hydraulic conductivities in the elevated polygonal rims sharply decrease with the transition from organic to mineral layers. This interface causes a rapid shallow subsurface drainage of rainwater towards the depressed polygon centres and troughs. The re-release of storage water from the centres through deeper and less conductive layers helps maintain a high water table in the surface drainage network of troughs throughout the summer. Text Ice lena river permafrost Tundra wedge* Siberia University of Arkansas: ScholarWorks@UARK Hydrogeology Journal 21 1 133 147 |
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Open Polar |
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University of Arkansas: ScholarWorks@UARK |
op_collection_id |
ftunivarkansas |
language |
unknown |
topic |
Water balance permafrost heterogeneity wetlands Russia Atmospheric Sciences Fresh Water Studies Terrestrial and Aquatic Ecology |
spellingShingle |
Water balance permafrost heterogeneity wetlands Russia Atmospheric Sciences Fresh Water Studies Terrestrial and Aquatic Ecology Helbig, Manuel Boike, Julia Langer, Moritz Schreiber, Peter Runkle, Benjamin R. K. Kutzbach, Lars Spatial and seasonal variability of polygonal tundra water balance: Lena River Delta, northern Siberia (Russia) |
topic_facet |
Water balance permafrost heterogeneity wetlands Russia Atmospheric Sciences Fresh Water Studies Terrestrial and Aquatic Ecology |
description |
The summer water balance of a typical Siberian polygonal tundra catchment is investigated in order to identify the spatial and temporal dynamics of its main hydrological processes. The results show that, besides precipitation and evapotranspiration, lateral flow considerably influences the site-specific hydrological conditions. The prominent microtopography of the polygonal tundra strongly controls lateral flow and storage behaviour of the investigated catchment. Intact rims of low-centred polygons build hydrological barriers, which release storage water later in summer than polygons with degraded rims and troughs above degraded ice wedges. The barrier function of rims is strongly controlled by soil thaw, which opens new subsurface flow paths and increases subsurface hydrological connectivity. Therefore, soil thaw dynamics determine the magnitude and timing of subsurface outflow and the redistribution of storage within the catchment. Hydraulic conductivities in the elevated polygonal rims sharply decrease with the transition from organic to mineral layers. This interface causes a rapid shallow subsurface drainage of rainwater towards the depressed polygon centres and troughs. The re-release of storage water from the centres through deeper and less conductive layers helps maintain a high water table in the surface drainage network of troughs throughout the summer. |
format |
Text |
author |
Helbig, Manuel Boike, Julia Langer, Moritz Schreiber, Peter Runkle, Benjamin R. K. Kutzbach, Lars |
author_facet |
Helbig, Manuel Boike, Julia Langer, Moritz Schreiber, Peter Runkle, Benjamin R. K. Kutzbach, Lars |
author_sort |
Helbig, Manuel |
title |
Spatial and seasonal variability of polygonal tundra water balance: Lena River Delta, northern Siberia (Russia) |
title_short |
Spatial and seasonal variability of polygonal tundra water balance: Lena River Delta, northern Siberia (Russia) |
title_full |
Spatial and seasonal variability of polygonal tundra water balance: Lena River Delta, northern Siberia (Russia) |
title_fullStr |
Spatial and seasonal variability of polygonal tundra water balance: Lena River Delta, northern Siberia (Russia) |
title_full_unstemmed |
Spatial and seasonal variability of polygonal tundra water balance: Lena River Delta, northern Siberia (Russia) |
title_sort |
spatial and seasonal variability of polygonal tundra water balance: lena river delta, northern siberia (russia) |
publisher |
ScholarWorks@UARK |
publishDate |
2013 |
url |
https://scholarworks.uark.edu/baegpub/6 https://doi.org/10.1007/s10040-012-0933-4 |
genre |
Ice lena river permafrost Tundra wedge* Siberia |
genre_facet |
Ice lena river permafrost Tundra wedge* Siberia |
op_source |
Biological and Agricultural Engineering Faculty Publications and Presentations |
op_relation |
https://scholarworks.uark.edu/baegpub/6 doi:10.1007/s10040-012-0933-4 |
op_doi |
https://doi.org/10.1007/s10040-012-0933-4 |
container_title |
Hydrogeology Journal |
container_volume |
21 |
container_issue |
1 |
container_start_page |
133 |
op_container_end_page |
147 |
_version_ |
1782335093136687104 |