| Summary: | Progress Code: completed Statement: Oceanography and nutrient measurements were taken where possible, which was not always at ideal locations. Therefore coverage of the area is not necessarily complete. Nutrient data were only recorded at 14 out of the 52 CTD stations. This cruise is however part of a series of 6 cruises which operated in this area, providing data from varying seasons and condition. Data collection: Continuous vertical profiles of conductivity and temperature were obtained using a Neil Brown Mark III CTD (conductivity, temperature and depth probe #2568) system, attached to a rosette water sampler (InterOcean). The temperature sensor was a platinum resistance thermometer with a range of -3 to 32 degrees celcius, the conductivity sensor had a range of 1-65mmhos, and the pressure sensor had a depth range of 0-3200dbar. For the nutrient data, water samples were collected using the rosette sampler and 5 L Niskin bottles. Two stations were made per day, one close to solar noon and the other at solar midnight. The depth of each cast was usually to 2000m or to near bottom if shallower. Measurements were made on the downcast and samples collected on the upcast. The CTD was lowered at a rate as close as possible to 1m/sec. The CTD was raised at speeds between 1m/s and 2m/s between sampling. At water sampling stations, conductivity and temperature was recorded. Output from the temperature, conductivity and pressure depth sensors were transmitted as a data set to the deck unit at 30 data sets per second. Data was initially recorded on audio cassettes. Ship-board processing: Oceanographic analysis - water samples were analysed for salinity and oxygen. Nutrient analysis-250mL water ' sub-samples were filtered through GF/F glass fibre filters, transferred to Whirlpacks and immediately frozen. Post-ship processing: Oceanography data - Data was initially recorded on audio cassettes, but later replayed to produce digital nine-track magnetic tapes by a PDP 11/23. Data tapes were then processed on a VAX 11/750. ...
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