California’s Sierra Nevada to rise during California drought due to water loss: study
LOS ANGELES, Dec. 17 (Xinhua) — Loss of water from the rocks of California’s Sierra Nevada caused the mountain range to grow nearly an inch (24 millimeters) in height during recent drought years from October 2011 to October 2015, a new research from the U.S. National Aeronautics and Space Administration (NASA) finds.
"This suggests that the solid Earth has a greater capacity to store water than previously thought," research scientist Donald Argus of NASA’s Jet Propulsion Laboratory (JPL) was quoted as saying in a news release.
Significantly more water was lost from cracks and soil within fractured mountain rock during drought and gained during heavy precipitation than hydrology models show, according to the new study, detailed in a paper published recently in the Journal of Geophysical Research: Solid Earth.
The team found that 10.8 cubic miles of water were lost from within fractured mountain rock in 2011-2015.
JPL water scientist Jay Famiglietti, who collaborated on the research, said the finding solves a mystery for hydrologists.
How much snowmelt percolates through fractured rock straight downward into the core of the mountain?
This is one of the key topics that we addressed in our study."
Famiglietti said the techniques developed for this study will allow scientists to begin exploring other questions about mountain groundwater.
Is there a significant amount of groundwater stored within mountains?
We just don’t have answers yet, and this study identities a set of new tools to help us get them."