Acronym: CTD
Description:

CTD measures the conductivity, temperature, and depth of any given body of water. "The shipboard CTD is made up of a set of small probes attached to a large metal rosette wheel. The rosette is lowered on a cable down to the seafloor, and scientists observe the water properties in real time via a conducting cable connecting the CTD to a computer on the ship. A remotely operated device allows the water bottles to be closed selectively as the instrument ascends. A standard CTD cast, depending on water depth, requires two to five hours to collect a complete set of data.Water sampling is often done at specific depths so scientists can learn the physical properties of the water column are at that particular place and time" (http://www.whoi.edu/instruments/viewInstrument.do?id=1003).

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Datasets associated with Conductivity, Temperature, Depth