Page 198 - Fundamentals of Ocean Renewable Energy Generating Electricity From The Sea

186 Fundamentals of Ocean Renewable Energy

FIG. 7.18 CTD and carousel water sampler prior to deployment.

Dynamical Properties
As mentioned in Section 7.4.1, a CTD fitted with sampling bottles can be used
to collect water samples from a fixed point in the water column (e.g. near the
surface or sea bed) for subsequent analysis. This analysis could be relatively
routine, and possibly performed on the vessel to reduce the need for transporting
large volumes of sea water to a laboratory for postprocessing. These activities
include filtering for SPM or chlorophyll. However, sometimes more intensive
and laborious postprocessing is required, and under such circumstances, only
a limited amount of processing on the ship may be required. A good example
of this category is filtering sea water for plankton that has been collected using
a plankton net. Three commonly used types of plankton net are a ring net, a