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Satellite-Derived Bathymetry and Seafloor Habitat Classification Mapping of Christmas Island Marine Park

Created 24/06/2025

Updated 24/06/2025

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Parks Australia - Indian Oceans Territory (IOT) Grants Project: Satellite-Derived Bathymetry and Seafloor Habitat Classification Mapping of Christmas Island Marine Park This project mapped Satellite-derived Bathymetry (SDB) and seafloor habitats at 2m horizontal spatial resolution, for the shallow waters (~0-25 m) of Christmas Island Marine Park. SDB data was processed using EOMAP's proprietary software and algorithm package Watcor-X, which generates SDB using multipspectral satellite data. The SDB is based on the physics-based inversion method of the radiative transfer equation which models the pathway of light and its interaction through different media (e.g. atmosphere and water column). The thematic classification of the seabed was based on multispectral satellite image analytics. Satellite imagery was pre-processed by applying a set of image correction procedures to reduce environmental noise, resulting in a standardised reflectance surface of the subsurface and seafloor. The information on seafloor reflectance at different wavelengths was used to run an object-based classification procedure which groups objects of similar spectral characteristics, shape and texture into different classes of major seafloor habitat type. These critical geospatial data layers provide the essential environmental baseline information for the long-term monitoring and management of the IOT Marine Parks. Having access to digital, georeferenced, high-resolution, satellite-derived maps of bathymetry and benthic habitats of shallow water areas, is of fundamental use in the areas of navigation and safety-at-sea, ecological research, environmental modelling, management and conservation, and monitoring the impacts from climate change.

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Additional Info

Field Value
Title Satellite-Derived Bathymetry and Seafloor Habitat Classification Mapping of Christmas Island Marine Park
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/a093f8c4-4208-4f63-ba9f-503bbddafe22
Contact Point
Australian Ocean Data Network
twiggs@eomap.com
Reference Period 12/02/2016 - 17/01/2022
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        105.488663,
        -10.620413
      ],
      [
        105.768814,
        -10.620413
      ],
      [
        105.768814,
        -10.336832
      ],
      [
        105.488663,
        -10.336832
      ],
      [
        105.488663,
        -10.620413
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Australian Oceans Data Network

Data Source

This dataset was originally found on Australian Oceans Data Network "Satellite-Derived Bathymetry and Seafloor Habitat Classification Mapping of Christmas Island Marine Park". Please visit the source to access the original metadata of the dataset:
https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/satellite-derived-bathymetry-and-seafloor-habitat-classification-mapping-of-christmas-island-ma