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Scientist Rhian Waller prepares the conductivity, temperature, depth apparatus, or CTD, for deployment. The CTD can calculate water density from those three parameters. (Conductivity is essentially salinity, or how salty the water is; density is calculated using temperature and salinity). The CTD is also useful for measuring changing water currents above and around the seamounts.


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Scientist Rhian Waller prepares the conductivity, temperature, depth apparatus, or CTD, for deployment. The CTD can calculate water density from those three parameters. (Conductivity is essentially salinity, or how salty the water is; density is calculated using temperature and salinity). The CTD is also useful for measuring changing water currents above and around the seamounts.

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