06 Sep '11, 6pm

Deepwater Horizon Oil Spill: New Study Gives More Accurate Picture of the Disaster via @michael_GR

Deepwater Horizon Oil Spill: New Study Gives More Accurate Picture of the Disaster via @michael_GR

The first was an acoustic Doppler current profiler or ADCP, which measures the Doppler shift in sound, such as the change from the higher pitch of a car as it approaches to a lower pitch as it moves away. "We aimed (the ADCP) at the jet of oil and gas that was coming out, and based on the frequency change in the echoes that came back from the jet, we could tell just how fast it was moving," said Camilli. Within minutes, they obtained more than 85,000 Doppler measurements. They also used an imaging multibeam-sonar, which operates on the same principles as medical ultrasound. "It gives you the equivalent of black-and-white images of the cross section of the flow of oil and gas," Camilli said. This enabled the researchers to distinguish oil and gas from seawater, Camilli said. "By using the acoustic techniques, we were able to collect a tremendous amount of data in the limite...

Full article: http://www.treehugger.com/files/2011/09/deepwater-horizon...

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