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Submarine geomorphology and sea floor processes along the coast of Vestfold Hills, East Antarctica from multibeam bathymetry and video data

Created 17/10/2025

Updated 17/10/2025

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Surveying of nearshore areas in the Vestfold Hills using high resolution multibeam swath bathymetry provides both a detailed digital bathymetric model and information on sediment acoustic backscatter. Combined with underwater video transects and sediment sampling, these data can be used to identify and map geomorphic units. Six geomorphic units identified in the survey region include: Rocky outcrops, sediment-floored basins, pediments, steep-sided valleys, scarps and sheltered embayments. In addition to geomorphic units, the data reveal sedimentary structures that provide insights into sediment transport and erosion in the area. Ice keel pits and scours are common while seafloor channels, scour depressions and sand ribbons indicate transport and deposition by wind-driven currents and oceanographic circulation. Gullies and sediment lobes on steep slopes indicate mass movement of sediment. The sheltered embayments preserve a mantle of boulder sand probably deposited by cold-based glaciers. Automated techniques utilizing the bathymetric grid and backscatter to map landforms are useful in defining reproducible boundaries between geomorphic units but cannot easily be adapted to accurately classify the variations in sea floor texture and structure imaged by these data.

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Additional Info

Field Value
Title Submarine geomorphology and sea floor processes along the coast of Vestfold Hills, East Antarctica from multibeam bathymetry and video data
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/0a95c6f7-0430-46fd-abac-ef9f0b5a6679
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        77.66666,
        -68.75
      ],
      [
        78.16666,
        -68.75
      ],
      [
        78.16666,
        -68.416666
      ],
      [
        77.66666,
        -68.416666
      ],
      [
        77.66666,
        -68.75
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Submarine geomorphology and sea floor processes along the coast of Vestfold Hills, East Antarctica from multibeam bathymetry and video data". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/submarine-geomorphology-and-sea-floor-processes-along-the-coast-of-vestfold-hills-east-antarcti