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| Titel |
Evaluation of the US DOE's conceptual model of hydrothermal activity at Yucca Mountain, Nevada |
| VerfasserIn |
Y. V. Dublyansky |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1991-959X
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Model Development ; 7, no. 4 ; Nr. 7, no. 4 (2014-08-04), S.1583-1607 |
| Datensatznummer |
250115672
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| Publikation (Nr.) |
 copernicus.org/gmd-7-1583-2014.pdf |
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| Zusammenfassung |
A unique conceptual model describing the conductive heating of rocks in the
thick unsaturated zone of Yucca Mountain, Nevada by a silicic pluton
emplaced several kilometers away is accepted by the US Department of
Energy (DOE) as an explanation of the elevated depositional temperatures
measured in fluid inclusions in secondary fluorite and calcite. Acceptance
of this model allowed the DOE to keep from considering hydrothermal activity in the
performance assessment of the proposed high-level nuclear waste disposal
facility.
The evaluation presented in this paper shows that no computational modeling
results have yet produced a satisfactory match with the empirical benchmark
data, specifically with age and fluid inclusion data that indicate high
temperatures (up to ca. 80 °C) in the unsaturated zone of Yucca
Mountain. Auxiliary sub-models complementing the DOE model, as well as
observations at a natural analog site, have also been evaluated. Summarily,
the model cannot be considered as validated. Due to the lack of validation, the
reliance on this model must be discontinued and the appropriateness of
decisions which rely on this model must be re-evaluated. |
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