RV Investigator Voyage IN2018_V06 CTD Data

This record describes the Conductivity-Temperature-Depth (CTD) data collected from the Marine National Facility RV Investigator voyage IN2018_V06, titled: "Status and recovery of deep-sea coral communities on seamounts in iconic Australian marine reserves." The voyage took place from Hobart (TAS) to Hobart between November 23 and December 19, 2018.

Data for 12 deployments were acquired using the Sea-Bird SBE911 CTD 24, fitted with 36 twelve litre bottles on the rosette sampler. Sea-Bird-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 secondary temperature sensor was swapped out after cast 1. The salinity data quality for this voyage is marginal.

The final conductivity calibration was based on a single deployment grouping. The final calibration from the primary sensor had a standard deviation (SD) of 0.0019699 PSU, within our target of ‘better than 0.002 PSU’. The standard product of 1 decibar binned averaged were produced using data from the primary sensors.
The dissolved oxygen data calibration fit had a SD of 0.76996 μM. The agreement between the CTD and bottle data was good.
A Transmissometer, PAR Fluorometer, 2 altimeters and an Eco-Triplet were also installed on the auxiliary A/D channels of the CTD.

The collected data were subsequently processed (quality-controlled), and archived by the CSIRO National Collections and Marine Infrastructure (NCMI) Information and Data Centre (IDC). Additional information regarding this dataset may be contained in the Voyage Summary and the CTD Data Processing Report.