National Oceanography Centre Spar Buoy [standard] capacitance wave wire buoy
|SeaVoX Device Catalogue
|NOC spar buoy
|A custom-built system that uses capacitance wave wires mounted on a spar buoy to measure waves, wave breaking and whitecaps in-situ. Three wave wires stretch along the length of the top of the buoy and are used to measure the wave height relative to the buoy. The wires are mounted orthogonally to each other and the buoy is ballasted so that the wires are typically half submerged and are consistently orientated into the wind. The system is fitted with a compass and accelerometer to correct for buoy motion. The spar buoy principle is used to minimise motion and provide a steady platform for measurements. Wave measurements are verified by independent video and still cameras. Other sensors can be mounted on the buoy such as acoustic and optical sensors that measure sub-surface bubble clouds. The buoy has an overall length of 11 m and the system can be deployed for 5 continuous days.
|Has Current Version
|National Oceanography Centre
|National Oceanography Centre (NOC), Southampton
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