A conductivity temperature depth (CTD) device is cast behind the boat during the Coordinated Simultaneous Physical-Biological Sampling Using ADCP-Equipped Ocean Gliders expedition. This instrument can measure oceanographic properties to help scientists learn more about the marine environment. This particular CTD is also outfitted with an acoustic Doppler current profiler (ADCP) to survey biological organisms in the water column like zooplankton and small fish.
CTD Cast
Image courtesy of Coordinated Simultaneous Physical-Biological Sampling Using ADCP-Equipped Ocean Gliders. Download largest version (jpg, 2 MB).

A conductivity temperature depth (CTD) device is cast behind the boat during the Coordinated Simultaneous Physical-Biological Sampling Using ADCP-Equipped Ocean Gliders expedition. This instrument can measure oceanographic properties to help scientists learn more about the marine environment. This particular CTD is also outfitted with an acoustic Doppler current profiler (ADCP) to survey biological organisms in the water column like zooplankton and small fish.