#YuccaMountain Is Possibly More Seismically Active Than Once Believed, Geologists Discover

March 26, 1998

PASADENA—"Recent geodetic measurements using Global Positioning System (GPS) satellites show that the Yucca Mountain area in southern Nevada is straining roughly 10 to 100 times faster than expected on the basis of the geologic history of the area. And for the moment at least, geologists are at a loss to explain the anomaly.

"In the March 28 issue of the journal Science, Brian Wernicke of the California Institute of Technology (Caltech) and his colleagues at the [Smithsonian Astrophysical Observatory] in Cambridge, Massachusetts, report on Global Positioning System surveys they conducted from 1991 to 1997. Those surveys show that the Yucca Mountain area is stretching apart at about one millimeter per year east-southeastward.

"'The question is, why are the predicted geological rates of stretching so much lower than what we are measuring?' asks Wernicke. 'That's something we need to think through and understand."

"The answer is likely to be of interest to quite a few people, because Yucca Mountain has been proposed as a site for the permanent disposal of high-level #radioactive waste. Experts believe that the waste-disposal site can accommodate a certain amount of seismic activity, but they nonetheless would like for any site to have a certain amount of stability over the next 10,000 to 100,000 years.

"Yucca Mountain was already known to have both seismic and #volcanic activity, Wernicke says. An example of the former is the 5.4-magnitude '#LittleSkullMountain' earthquake that occurred in 1992. And an example of the latter is the 80,000-year-old volcano to the south of the mountain. The volcano is inactive, but still must be studied according to Department of Energy regulations.

"The problem the new study poses is that the strain is building up in the crust at a rate about one-fourth that of the most rapidly straining areas of the earth's crust, such as near the San Andreas fault, Wernicke says. But there could be other factors at work."

Read more:
https://www.caltech.edu/about/news/yucca-mountain-possibly-more-seismically-active-once-believed-geologists-discover-234

#nuclear #NuclearWaste
#WaterIsLife #NoNukes
#NoDumping #RethinkNotRestart

Yucca Mountain Is Possibly More Seismically Active Than Once Believed, Geologists Discover

Recent geodetic measurements using Global Positioning System (GPS) satellites show that the Yucca Mountain area in southern Nevada is straining roughly 10 to 100 times faster than expected on the basis of the geologic history of the area. And for the moment at least, geologists are at a loss to explain the anomaly.

California Institute of Technology