Minivibe Truck (IMAGE)
Caption
The minivibe truck, using a relatively light 700-pound reaction weight, will stop every 30 feet, set the shaker on the asphalt and vibrate the ground for a few minutes. Hundreds of monitoring sensors connected by cable transmit the soundings to the recording truck. It's a slow process, with the truck creeping less than one mile a day along the river route.
Credit
Mike Wolterbeek, University of Nevada, Reno
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