Australian Hydrographic Office land features derived from S57 files aggregated for the continent and Lord Howe Island. The dataset represents land area defined at Lowest Astronomical Tide (LAT), with the Great Australian Bight coastline sourced from Geoscience Australia's 1:100k data. This data was collated by the NESP Marine Biodiversity Hub Project D3.
Use Cases
- Map coastal land boundaries for environmental planning based on the Lowest Astronomical Tide datum.
- Analyze coastline changes by comparing LAT-derived land features with other tidal datums.
- Support marine habitat modeling by using the aggregated land and coastline polygons.
- Validate nautical chart data by referencing the official Australian Hydrographic Office land definitions.
- Integrate coastline data for continental shelf studies, leveraging the Geoscience Australia 1:100k source for the Great Australian Bight.
Strengths
- Land features are derived from official Australian Hydrographic Office S57 files.
- The Great Australian Bight coastline is sourced from Geoscience Australia's authoritative 1:100k data.
- Data collation was conducted by the NESP Marine Biodiversity Hub Project D3, a research initiative.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Freshness should be verified; last updated metadata indicates a future date (2026-04-29).
Provenance
- Source
- Australian Ocean Data Network via data.gov.au
- Collection Method
- Derived by aggregating and dissolving boundaries from the 1 degree S57 file series (lndare_a layer), with a segment replaced by Geoscience Australia's 1:100k coastline.
- Freshness
- Last updated 2026-04-29 00:41:34.937905
- Geography
- Australian continent and Lord Howe Island