0c2edbf2-7173-4c25-890e-fdc9fd49c5d7 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-06-24T21:53:05 creation ISO 19115 2016 RV Investigator Voyage IN2018_V04 AA100 Nutrient Data 0c2edbf2-7173-4c25-890e-fdc9fd49c5d7 This record describes Nutrient data collected from the Marine National Facility (MNF) RV Investigator voyage IN2018_V04, titled: "Constraining external iron inputs and cycling in the southern extension of the East Australian Current." The voyage took place between September 11 and October 8, 2018, departing Hobart (TAS) and returning to Hobart. The primary objective of the voyage was to characterize the sources and biogeochemical cycling of iron and associated nutrients and their impact on productivity from east of mainland Australia to south of Tasmania. Analysed salinity, oxygen and nutrient samples from the CTD, TMR and experimental samples are described in the IN2018_V04 Hydrology metadata record (see link below). This metadata record pertains to the instrument used to analyse seawater nutrients underway (AA100). Nitrate as NOx (NO3 + NO2) and Phosphate were analysed on the instrument. The final dataset includes latitude, longitude, UTC time stamps, NOx (nitrate + nitrite in µM), phosphate (PO4 in µM) and analysis file. The analysis file for each data point is included if correcting to the reference material used for each analysis is required. The measurements for the reference material are provided in appendix 6.2. Time stamps in the .csv data file are given in a written format set to UTC. In the NetCDF file, the time stamps are provided as seconds since the start of 2018, eg 01/01/2018 00:00:00. This dataset has been archived at the CSIRO O&A Information and Data Centre (IDC) in Hobart. Additional information regarding this dataset is contained in the Voyage Report and Data Processing Report (see links below). {"type": "Polygon", "coordinates": [[[141.297, -47.179], [154.639, -47.179], [154.639, -34.298], [141.297, -34.298], [141.297, -47.179]]]} 141.297 154.639 -47.179 -34.298 Investigator Survey documentDigital Link to RV Investigator Survey Information, including voyage plans and summaries HTML Marine National Facility documentDigital Link to the Marine National Facility Homepage HTML Data Trawler documentDigital Link to Data Available for this Voyage via the Data Trawler HTML Hydrology Data .csv documentDigital Download the Hydrology Data (CSV format) HTML Hydrology Data .nc documentDigital Download the Hydrology Data (NetCDF format) HTML Data Processing Report documentDigital Download the Data Processing Report (PDF format) HTML Data Licensing documentDigital Link to Data License / Attribution statements HTML IN2018_V04 Hydrology documentDigital Access the metadata record for the corresponding Hydrology dataset. HTML Unnamed resource documentDigital License Graphic PNG