Erosion of the Yucca Mountain Crest

A simple numerical modeling has been used to explore the erosion rates

Amsterdam, 5 May 2009 – The Yucca Mountain crest in Nevada, USA has been proposed as a permanent site for high level radioactive waste. But a new study, already published as an article in press by Elsevier’s journal Geomorphology and recently included in the Research Highlights of Nature, shows that there may be erosion of the crest.

Kurt Stüwe of the University of Graz, Austria, together with his colleagues, used a simple numerical landscape evolution model to explore the rate of erosional decay of the Yucca Mountain crest. The model they used is well established in the expert literature, but Kurt Stüwe and his coauthors used it for the first time for a subject of economic relevance.

The researchers predict that the crest could be denuded within 500.000 years to 5 million years, using conservative parameters as the local geology of the region. It may be even more rapid if other factors are involved. The erosion procession also have the potential to affect the long-term stability of this repository.

“In our research of the morphological imprint of tectonics in mountain belts around the world, it was exciting to be able to apply our numerical models to a subject of high interest to experts outside the narrow field of geomorphology or tectonics”.commented Dr. K. Stüwe, the study’s lead investigator.

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Notes to Editors: 
The article “Erosional decay of the Yucca Mountain crest, Nevada” by K. Stüwe, J. Robl and S. Matthai appeared in Geomorphology, Articles in Press (28 January 2009), published by Elsevier.Full text of the article featured above is available to members of the media upon request. Please contact the Elsevier press office, newsroom@elsevier.com. To schedule an interview, contact Carolien van der Zanden.

About Geomorphology
Geomorphology, the 3rd highest cited journal in Geology*, publishes peer-reviewed works across the full spectrum of the discipline from fundamental theory and science to applied research of relevance to sustainable management of the environment. The Editors-in-Chief of the Journal are R.A. Marston (Kansas State University, USA), T. Oguchi (The University of Tokyo, Japan) and A. Plater (University of Liverpool, UK). The journal had almost 600,000 full-text articles downloads from ScienceDirect in 2008**. For more information: www.elsevier.com/locate/geomorph 
  
*Journal Citation Reports® published by Thomson Reuters, 2008

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