26971686-bd5b-4a64-bb92-74b24f7fe9e0 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-06-24T23:39:49 creation ISO 19115 2016 RV Investigator Voyage IN2018_T01 CTD Data 26971686-bd5b-4a64-bb92-74b24f7fe9e0 This record describes the Conductivity-Temperature-Depth (CTD) data collected from the Marine National Facility RV Investigator voyage IN2018_T01 titled: "Physical and biogeochemical gradients in the East Australian Current." The voyage took place between April 6 and April 14, 2018 departing from Hobart (TAS) and arriving in Brisbane (QLD). Data for 21 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 Salinometer was found to have been malfunctioning and not reliably reporting results on IN2018_T01. The final conductivity calibration was based on calibrations derived on the subsequent voyage: IN2018_V03. The final calibration from the primary sensor had a standard deviation (SD) of 0.0013986 PSU for the primary and 0.0014150 PSU for the secondary, well 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 with secondary sensors included with the suffix ‘_2’. The dissolved oxygen data calibration fit had a SD of 0.70186 uM for the primary and 0.81698 uM for the secondary. The agreement between the CTD and bottle data was good. Fluorometer, Altimeter, Transmissometer and PAR sensors 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. {"type": "Polygon", "coordinates": [[[148.2, -42.6], [154.2, -42.6], [154.2, -33.9], [148.2, -33.9], [148.2, -42.6]]]} 148.2 154.2 -42.6 -33.9 Download netcdf data in2018_t01CtdAvg_nc.zip (2 MB) documentDigital HTML Voyage Plan (pdf) documentDigital HTML download .csv data in2018_t01CtdAvg_csv.zip (0.48 MB) documentDigital HTML Data available via Data Trawler documentDigital HTML RV Investigator survey information including voyage plans and summaries documentDigital HTML Download Processing report in2018_t01_CTD_Processing_Report.pdf documentDigital HTML Marine National Facility documentDigital HTML License/Attribution documentDigital HTML Unnamed resource documentDigital License Graphic PNG