All Aboard Station ALOHA CTD Recovery WHOTS Mooring
Loading Ship CTD Deployment Niskin Sampling Kaena Point
Departure CTD Lab Ops Net Tows All Ashore
PRR/TSRB Meteorology Prod/Sediment End/Credits
ADCP Thermosal Ship Life Quizzes
Upon arrival at Station ALOHA, the first order of business is the deployment of a free-floating sediment trap array. This array will collect sediment which falls through the upper 150 meters of the water column for the next couple of days. When we retrieve the array, we will be able to determine the type and quantity of sediment that was in the water during our cruise.

While the sediment traps are being deployed we'd better get our main instrument package, a 24 bottle CTD rosette, ready to be sent down to about 4750 meters, just a few meters away from the bottom of the ocean! The "CTD" (an abbreviation for Conductivity, Temperature, Depth) will measure the temperature, salinity, oxygen and pressure of the ocean from the surface all the way down to near the ocean's bottom. The bottles on the rosette helps us to collect water from various depths which can be measured to calibrate the CTD and to make assorted biogeochemical measurements (including silicate, nitrate, phosphate as well as many others).

24 bottle CTD rosette ready for deployment

Rosette preparation movie: QuickTime | Real Video
CTD Bottle Cocking: WMV | MPEG
CTD Sensor Rinsing: WMV | MPEG