Reef polygons were manually digitized from multibeam echosounder datasets collected on marine survey GA0308 in August/September 2008. Features were mapped at a scale of 1:10,000 using bathymetry, backscatter, and derivatives like slope and contours. This dataset is published with the permission of the CEO, Geoscience Australia.
Use Cases
- Map hard substrate reef habitats based on defined exposed, raised features.
- Analyze seafloor geomorphology based on bathymetric derivatives like slope and hillshading.
- Establish marine environmental baselines for the Carnarvon Shelf Key Ecological Feature.
- Validate automated seafloor classification algorithms based on manually digitized polygons.
Strengths
- Features were mapped at a detailed scale of 1:10,000.
- Data collection is documented to a specific marine survey (GA0308) in August/September 2008.
- Polygons were defined using multiple data sources including bathymetry, backscatter, and derivatives.
Limitations
- Row count is unknown, which may limit suitability assessment.
- Column-level documentation is absent; field semantics must be inferred after download.
- Data may reflect geographic/temporal bias inherent to the single 2008 survey.
Provenance
- Source
- Geoscience Australia Data
- Collection Method
- Polygons were manually digitized from multibeam echosounder data.
- Time Range
- August/September 2008
- Freshness
- Last updated 2026-03-25 19:18:38.921545; freshness should be verified.
- Geography
- Carnarvon Shelf, Western Australia