GPS data can track slight tremors underground that could help predict earthquakes two hours in advance.
Currently, it is impossible to accurately predict when and where an earthquake might strike. But scientists now believe that Global Positioning System data could help spot early warning signs two hours before a big quake strikes.
But some experts disagree that the findings could help scientists predict earthquakes moving forward. The researchers analyzed GPS data from more than 90 earthquakes with magnitudes greater than 7, which was pulled from Nevada Geodetic Laboratory, a University of Nevada, Reno research lab that catalogs global GPS data. GPS satellites are able to detect ground movement by measuring the position of sensors embedded around the Earth and recording how much they are displaced over time.
Identifying this pattern of subtle movements could help scientists warn people of earthquakes hours in advance — but only if we develop more advanced GPS systems, study co-author Quentin Bletery noted. The new study required a massive dataset — pulled from more than 3,000 sensors around the world — to reveal the pattern preceding the earthquake.
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