RV Investigator Voyage IN2017_C01 CTD Data

This record describes the Conductivity-Temperature-Depth (CTD) data collected from the Marine National Facility RV Investigator voyage IN2017_C01, titled: "GAB deep water geological and benthic ecology program". The voyage took place from 11 to 27th April, 2017 departing from Hobart and returning to Hobart (TAS).

Data for 10 deployments were acquired using the Seabird SBE911 CTD 23, fitted with 25 twelve litre bottles on the rosette sampler. Deployments 3 – 5 were aborted due to electrical issues and the data for these casts will not be included in the processed data set. Sea-Bird and O&A calibration lab supplied calibration factors were used to compute the pressures and preliminary conductivity values.
CSIRO -supplied calibrations were applied to the temperature data. The data were subjected to automated QC to remove spikes and out-of-range values.
The final conductivity calibration was based on a single deployment grouping. The final calibration from the primary sensor had a standard deviation (S.D) of 0.0029597 PSU, outside our target of ‘better than 0.002 PSU’. The standard product of 1dbar binned averaged were produced using data from the primary sensors.
The dissolved oxygen data calibration fit had a S.D. of 1.0974uM. The agreement between the CTD and bottle data was good.
Four fluorometers, a transmissometer and a Franatec CH4 sensor were also installed on the auxiliary A/D channels of the CTD.

The collected data were subsequently processed and archived within the CSIRO Oceans and Atmosphere (O&A) Information and Data Centre (IDC) in Hobart. Additional information regarding this dataset may be contained in the Voyage Summary and the CTD Data Processing Report.