Page 11: of Marine Technology Magazine (April 2006)

www.seadiscovery.com Marine Technology Reporter 11

Mass., and the Kachemak Bay Research

Reserve in Homer, Alaska, planned to use the Roanoke Island as a platform to deploy the five OBS.

The seismometers are resting on the bot- tom of the ocean for six weeks until the team returns to collect them. During those six weeks they will record seismic activity from the Augustine volcano onto an on board computer. They cannot broadcast the information well through the water column so the information will be stored in the onboard computer and downloaded upon their recovery. When the team returns to recover the OBS, an acoustic signal is sent from the surface ship to the OBS to release its weight. The OBS, which is naturally buoyant, will rise to the surface and be picked up by the crew. "Basically they're recording those little news

Visit www.maritimeequipment.com/mt & Click No. 206

Chart of the approximate OBS deployment locations. The green denotes the ship's path of travel. The yellow denotes OBS site. (Chart image courtesy of U.S. Coast

Guard cutter Roanoke Island.)

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