August/September 2008 survey data from the Carnarvon Shelf was used to manually digitize reef polygons at a 1:10,000 scale. Reefs were defined as exposed, hard substrate raised above the surrounding seafloor and mapped using bathymetry, backscatter, and derivatives like slope and contours. This dataset is published with the permission of the CEO, Geoscience Australia.
Use Cases
- Modeling reef habitat distribution based on mapped hard substrate polygons.
- Analyzing seafloor geomorphology based on bathymetry and slope derivatives.
- Studying benthic ecosystem structure using the defined reef area boundaries.
Strengths
- Features were mapped at a detailed scale of 1:10,000.
- Data is sourced from a dedicated marine survey (GA0308) conducted in August/September 2008.
- Mapping utilized multiple data layers including bathymetry, backscatter, and derived products.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data may reflect temporal bias inherent to the single 2008 survey.
Provenance
- Source
- Geoscience Australia Data
- Collection Method
- Polygons were manually digitized from multibeam echosounder datasets.
- Time Range
- August/September 2008
- Freshness
- Last updated 2026-05-14 09:39:40.139695; freshness should be verified.
- Geography
- Carnarvon Shelf