Buoy System Instrumentation
Buoy System Instrumentation : Instrumentation attached to the bottom. Anchored or free-floating buoy system for the measurement of oceanographic and meteorological parameters. Two basic systems involving the buoys and their moorings are used. The selection of either arrangement, used separately or in combination with the other, depends on the requirements of the scientist. In the slack wire system, sufficient slack is left in the line to avoid having the float submerge with changing tide and current and to allow sufficient scope to avoid dragging of the anchore. The taut wire system is one in which a submerged or partially submerged float keeps the vertical Line to the anchor taut and nearly vertical. The taut wire mooring system reduced the horizontal and vertical motion, and is thus advantageous for current meters and sensors in which constant depth and extraneous motions are critical. Another desirable feature is that it permits the submergence of a power supply and recorders, which may or may not be connected to a surface floating marker. This system makes it less likely for the valuable instrument package float to be run down by ships or stolen. The uses of the buoy or floats vary widely. One role of the buoys is to serve as a marker float for navigational purposes or to fix a position for repeated observation at the same location
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