This record describes the data (CTD, Dissolved Oxygen, Transmissometer, PAR, ECO Triplet, Nitrate, Fluorescence and LOPC) collected using the towed TRIAXUS platform on Investigator voyage IN2021_V03, titled: "Integrated Marine Observing System: monitoring of East Australian Current property transports at 27 degrees South (multi-year)." The voyage took place from Hobart (TAS) to Brisbane (QLD) between May 8 and June 3, 2021.
Data for 8 Triaxus tows were acquired using Seabird’s Seasave acquisition software using the Seabird SBE911+ CTD #25. Sea-Bird and O&A Calibration lab supplied calibration factors were used to compute the pressure, preliminary conductivity, oxygen and temperature values. The data were subjected to automated QC to remove spikes and out-of-range values.
SUNA sensors were also installed on the auxiliary A/D channels of the CTD. In addition to the auxiliary channels, an ECO Triplet and LOPC were mounted on the Triaxus as attached payloads.
The standard data product (1 decibar/10 second binned averaged) was produced using data from the primary sensors to produce an along-track time-series dataset for each data recording file. These files were grouped into sections containing each Triaxus tow and in each tow, vertical casts were created with interpolated values from the along-track time-series binned dataset with a maximum interpolation distance of 8 cast. These generated the along-track and vertical cast section data products for each Triaxus tow.
Throughout the voyage there were numerous issues with the Triaxus vehicle. As a result, standard data products could not be made for a number of deployments.
The collected data were subsequently archived within the CSIRO National Collections and Marine Infrastructure (NCMI) Information and Data Centre (IDC) in Hobart.
Additional information regarding this dataset may be contained in the Voyage Summary and the Data Processing Report.
