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Landscape development in the safety assessment of a potential repository in Forsmark, Sweden

Published online by Cambridge University Press:  09 January 2012

J. Barescut ,
D. Lariviere ,
T. Stocki ,
T. Lindborg ,
L. Brydsten ,
J.-O. Näslund  and
U. Kautsky
T. Lindborg
Affiliation:
Swedish Nuclear Fuel and Waste Management Co, Box 250, SE-101 24 Stockholm, Sweden
L. Brydsten
Affiliation:
Umeå University, Department of Ecology and Environmental Science, 901 87 Umeå, Sweden
J.-O. Näslund
Affiliation:
Swedish Nuclear Fuel and Waste Management Co, Box 250, SE-101 24 Stockholm, Sweden
U. Kautsky
Affiliation:
Swedish Nuclear Fuel and Waste Management Co, Box 250, SE-101 24 Stockholm, Sweden
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Abstract

One challenge in the analysis of far future radiological effects of a deep geological repository is to handle changes in time on ecosystems potentially affected. Under Swedish regulations, the time span that needs to be assessed is 100,000 yrs or more. This has historically been treated by using a reference biosphere that, in short, takes into account the total data range of the site properties that may change with different climates and sites. One problem with this strategy has always been to show that these reference biospheres have relevance for a specific site. To overcome this problem, SKB has adopted a strategy that uses site specific information together with scientific literature to build a narrative. This narrative describes the site development during a 100,000-yrs period (time frame of the present global glacial cycle). The information is used to compile a number of models that describe how the succession of abiotic and biotic features and their properties will develop at the site. The resulting Landscape Development Model is finally used in two ways: to tell the narrative of the site development based on scientific understanding and interdisciplinary consensus, and to populate the Radionuclide Model that is used to describe the effects of released radionuclides in a changing environment.

Type
Research Article
Information
Radioprotection , Volume 46 , Issue 6: ICRER 2011 – International Conference on Radioecology & Environmental Radioactivity: Environment & Nuclear Renaissance , 2011 , pp. S639 - S645
Copyright
© Owned by the authors, published by EDP Sciences, 2011

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References

Lindborg T (ed), 2008. Surface system Forsmark. Site descriptive modelling, SDMSite Forsmark. SKB R-08-11, Svensk Kärnbränslehantering AB.
Söderbäck B (ed), 2008. Geological evolution, palaeoclimate and historical development of the Forsmark and Laxemar-Simpevarp areas. Site descriptive modelling, SDM-Site. SKB R-08-19, Svensk Kärnbränslehantering AB.
Persson C, 1992. The latest ice recession and till deposits in northern Uppland, eastern central Sweden. Geological survey of Sweden, Ser. Ca 81, pp 217–224.
Strömberg B, 1989. Late Weichselian deglaciation and clay varve chronology in eastcentral Sweden. Sveriges Geologiska Undersökning, Series Ca 73, 70 pp.
Climate and climate-related issues for the safety assessment SR-Site. SKB TR-10-49, Svensk Kärnbränslehantering AB.
Whitehouse P, 2009. Glacial isostatic adjustment and sea-level change. State of the art report. SKB TR-09-11, Svensk Kärnbränslehantering AB.
Hedenström A, Sohlenius G, Strömgren M, Brydsten L, Nyman H, 2008. Depth and stratigraphy of regolith at Forsmark. Site descriptive modelling, SDM-Site Forsmark. SKB R-08-07, Svensk Kärnbränslehantering AB.
Lindborg T (ed), 2010. Landscape Forsmark – data, methodology and results for SR-Site. SKB TR-10-05, Svensk Kärnbränslehantering AB.