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RV Investigator Voyage IN2023_E03 SBP120 Sub-bottom Profiler Data

Created 25/06/2025

Updated 25/06/2025

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This record describes sub bottom profiler data collected on RV Investigator voyage IN2023_E03, titled "Trials & Calibrations", which was segmented into 3 legs, departing Hobart on September 13 and ending in Sydney on September 30, 2023. Leg 1 (Hobart to Hobart) took place between 13-16 Sep, Leg 2 (Hobart to Hobart) between 16-25 Sep and Leg 3 (Hobart to Sydney) between 26-30 Sep.
The Kongsberg SBP120 (sub bottom profiler) was used to acquire data containing the specular reflections at different sediment interfaces below the seafloor. The SBP120 provides a 3° by 3° angular resolution. The echosounder's frequency sweep range is from 2.5 to 7 kHz. The SBP120 was logged for the majority of the transit segments of the voyage. Data are stored in .raw (543 files 11.6 GB) raw and .seg (539 files 11.5 GB) segy formats at CSIRO. The segy format data had a real-time processing stream applied, which applies gain, a gain correction and a matched filter with replica shaping (typically in depths >200m) or a bandpass filter (typically in depths <200m). Instantaneous amplitude and time variable gain were not applied on acquisition. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request.

Files and APIs

Additional Info

Field Value
Title RV Investigator Voyage IN2023_E03 SBP120 Sub-bottom Profiler Data
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/515543a6-2dd3-41f3-bc23-6e7a1f7cdaa9
Contact Point
CSIRO Marlin Data Catalogue
NCMIGeophysicalSurveyMapping@csiro.au
Reference Period 20/10/2023
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        147.33,
        -44.2633
      ],
      [
        151.3816,
        -44.2633
      ],
      [
        151.3816,
        -33.8267
      ],
      [
        147.33,
        -33.8267
      ],
      [
        147.33,
        -44.2633
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal CSIRO Marlin

Data Source

This dataset was originally found on CSIRO Marlin "RV Investigator Voyage IN2023_E03 SBP120 Sub-bottom Profiler 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-in2023_e03-sbp120-sub-bottom-profiler-data