Washington, July 10 : Scientists have measured how changes in stress in rocks affect changes in the speed of seismic waves at depths where earthquakes begin, which could lead to the development of a “stress meter” for better understanding how fault-zone stress is related to earthquakes.
The team of scientists that carried out the measurements was from Rice University, the Carnegie Institution of Washington, and the US Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab).
“The goal of our project was to develop a method for measuring stress changes, especially at depths where earthquakes originate,” said Fenglin Niu of Rice University’s Department of Earth Science. “We call it a seismic stress meter,” he added.