Earthquake Sensors on San Francisco Bridges Measure the Napa Quake
As the Earth shook Marin awake early Sunday morning, dozens of sensors mounted on the Golden Gate and Richmond-San Rafael bridges, as well other county buildings, recorded the movement.
The sensor system is designed to immediately record data and help engineers make the structures better able to absorb future earthquakes.
“This is the first time we have been able to harvest data since the sensors went up,” said state Supervising Geologist Tony Shakal, who heads the Strong Motion Instrumentation Program for the California Geological Survey.
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