Tuesday, July 21, 2009

Watch a Drifter Deployment

In this video, Rebekka Federer (a seabird and marine mammal observer with the Prince William Sound Science Center), Kerstin Cullen (a biological technician with the Science Center) and Jim Pettigrew (with the University of California, Santa Barbara) work on the deck of the Vixen deploying a drifter. The white "kite" functions as a sea anchor. It hangs below the orange and white buoy below the surface at a depth of approximately 1 meter. This sea anchor "drives" the buoy, so the motion of the buoy tells us the speed and direction of the current at a depth of 1 meter.

In this video, we are essentially still within our anchorage! It is so rough in the central Sound that we are getting good data and great training just in the fairly sheltered waters of Mc Pherson Passage between Peak and Naked Island.

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