Browse Shelf Reef Polygons Digitized from 2014 Marine Surveys

Reef polygons were manually digitized from multibeam echosounder datasets collected on marine surveys GA0345, GA0346, and TAN1411 in October and November 2014. Features were mapped at a scale of 1:10,000 using bathymetry, backscatter data, and derivatives like slope and hillshaded bathymetry. This dataset is published with the permission of the CEO, Geoscience Australia.

Use Cases

• Map reef distribution based on manually digitized hard substrate polygons.
• Analyze seafloor geomorphology using bathymetry and backscatter data derivatives.
• Model habitat suitability for marine species based on defined reef areas.
• Validate automated seafloor classification algorithms against a manually created reference dataset.

Strengths

• Features were mapped at a detailed scale of 1:10,000.
• Data integrates multiple sources including bathymetry, backscatter, and derived products like slope.
• Reefs were defined using a clear criterion: exposed, hard substrate raised above the surrounding seafloor.

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 geographic and temporal bias inherent to the specific 2014 surveys.

Provenance

Source

Australian Ocean Data Network, Geoscience Australia

Collection Method

Manual digitization from multibeam echosounder datasets.

Time Range

October-November 2014

Freshness

Last updated 2026-06-04 05:50:02.098809; freshness should be verified.

Geography

Browse Shelf, Australia (continental shelf defined by the 200 m depth contour)