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| Titel |
Estimation of permafrost thawing rates in a sub-arctic catchment using recession flow analysis |
| VerfasserIn |
S. W. Lyon, G. Destouni, R. Giesler, C. Humborg, M. Mörth, J. Seibert, J. Karlsson, P. A. Troch |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 13, no. 5 ; Nr. 13, no. 5 (2009-05-12), S.595-604 |
| Datensatznummer |
250011859
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| Publikation (Nr.) |
 copernicus.org/hess-13-595-2009.pdf |
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| Zusammenfassung |
| Permafrost thawing is likely to change the flow pathways taken by water as it
moves through arctic and sub-arctic landscapes. The location and distribution
of these pathways directly influence the carbon and other biogeochemical
cycling in northern latitude catchments. While permafrost thawing due to
climate change has been observed in the arctic and sub-arctic, direct
observations of permafrost depth are difficult to perform at scales larger
than a local scale. Using recession flow analysis, it may be possible to
detect and estimate the rate of permafrost thawing based on a long-term
streamflow record. We demonstrate the application of this approach to the
sub-arctic Abiskojokken catchment in northern Sweden. Based on recession flow
analysis, we estimate that permafrost in this catchment may be thawing at an
average rate of about 0.9 cm/yr during the past 90 years. This estimated
thawing rate is consistent with direct observations of permafrost thawing
rates, ranging from 0.7 to 1.3 cm/yr over the past 30 years in the region. |
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