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RV Investigator Voyage IN2022_V08 ADCP Data

Created 25/06/2025

Updated 25/06/2025

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This record describes the Acoustic Doppler Current Profiler (ADCP) data collected from the Marine National Facility RV Investigator voyage IN2022_V08, titled "Biodiversity Assessment of Australia’s Indian Ocean Territories." The voyage took place between September 30, 2022 (ACST) and November 3, 2022 (AWST), departing from Darwin and returning to Fremantle. As required, one or both ADCPs were turned off in less than 500 m depths to avoid the significant acoustic interference these systems generate, particularly between the OS75 and EM710. Changes to the ADCPs were logged and DAP were informed when multibeam bathymetry was considered a scientific priority. The OS75 was switched off for significant parts of the voyage, especially around Christmas and Cocos (Keeling) Islands while shallow water mapping was being undertaken. Throughout the voyage there were high counts of low-quality position data from Seapath. In collaboration with UHDAS Support, on the 2022-10-10 the ADCP was configured to use POSMV rather than Seapath for position and heading data, consequently the data has been split into two parts. ADCP data were collected using the University of Hawaii Data Acquisition System (UHDAS) and post-processed using the Common Ocean Data Access System (CODAS). Documentation for these systems can be found here: https://currents.soest.hawaii.edu/docs/adcp_doc. Both the RDI Ocean Surveyor 150kHz ADCP and the RDI Ocean Surveyor 75kHz ADCP were run in narrowband mode. The OS150 ADCP was used throughout the voyage. The OS75 was used in deep waters and turned off in shallower waters so as not to interfere with the EM710 Internal triggering was used. The drop keel was at 8 m below the waterline for the duration of the voyage. See the voyage computing and electronics report for more details regarding data acquisition. This dataset was processed (quality-controlled), and then archived by the CSIRO National Collections and Marine Infrastructure (NCMI) Information and Data Centre (IDC).

Files and APIs

Additional Info

Field Value
Title RV Investigator Voyage IN2022_V08 ADCP Data
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/f676c044-c24a-4bd7-a87b-79bae90ceb2c
Contact Point
CSIRO Marlin Data Catalogue
data-requests-hf@csiro.au
Reference Period 30/09/2022 - 03/11/2022
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        95.233,
        -32.176
      ],
      [
        130.882,
        -32.176
      ],
      [
        130.882,
        -10.483
      ],
      [
        95.233,
        -10.483
      ],
      [
        95.233,
        -32.176
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal CSIRO Marlin

Data Source

This dataset was originally found on CSIRO Marlin "RV Investigator Voyage IN2022_V08 ADCP Data". Please visit the source to access the original metadata of the dataset:
https://marlin.csiro.au/geonetwork/srv/eng/csw/dataset/rv-investigator-voyage-in2022_v08-adcp-data