From Geoscience Australia
JSON format icon JSON RDF format icon RDF ISO19115-3 XML

Darwin Harbour Habitat Mapping Program: Backscatter entropy

Created 17/10/2025

Updated 17/10/2025

JSON format icon JSON RDF format icon RDF ISO19115-3 XML

This resource contains a GLCM (Grey-Level Co-occurrence Matices) entropy grid of the backscatter data for the greater Darwin Harbour region as part of a baseline seabed mapping program of Darwin Harbour and Bynoe Harbour. This project was funded through offset funds provided by an INPEX-led Ichthys LNG Project to the Northern Territory Government’s Department of Environment and Natural Resources (NTG-DENR) with co-investment from Geoscience Australia (GA) and the Australian Institute of Marine Science (AIMS). The intent of this program is to improve knowledge of the marine environments in the Darwin and Bynoe Harbour regions by collating and collecting baseline data that enable the creation of thematic habitat maps and information to underpin marine resource management decisions. The GLCM (Grey-Level Co-occurrence Matices) entropy grid of the backscatter data was derived from a compilation of multiple surveys undertaken by GA, AIMS and NTG-DENR between 2011 and 2017, including GA0333 (Siwabessy et al., 2015), GA0341 (Siwabessy et al., 2015), GA0351/SOL6187 (Siwabessy et al., 2016), GA4452/SOL6432 (Siwabessy et al., 2017), GA0356 (Radke et al., 2017), and GA0358 and GA0359 (Radke et al., 2018), adding to those from a previous survey GA0333 collected by GA, AIMS and NTG-DENR. Entropy measures the disorder or complexity of an image. The entropy is large when the image is texturally complex.

Files and APIs

Tags

Additional Info

Field Value
Title Darwin Harbour Habitat Mapping Program: Backscatter entropy
Language English
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/2d4d26d7-851d-48c9-9229-03f0e078981c
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 19/02/2019
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        130.3,
        -12.78
      ],
      [
        131.05,
        -12.78
      ],
      [
        131.05,
        -12.09
      ],
      [
        130.3,
        -12.09
      ],
      [
        130.3,
        -12.78
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Darwin Harbour Habitat Mapping Program: Backscatter entropy". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/darwin-harbour-habitat-mapping-program-backscatter-entropy