Bathymetry and Geophysical Grids for Australia's Marine Margins

Australia's marine margins are covered by digital bathymetry, gravity, and magnetic grids with resolutions of 250-1000 meters. The grids were produced by the Australian Geological Survey Organisation in cooperation with Desmond Fitzgerald and Associates and the Australian Hydrographic Service. They integrate ship-track data with satellite and onshore sources, using leveling techniques to correct errors.

Use Cases

• Modeling seafloor topography and geological structures based on bathymetry data.
• Analyzing crustal composition and density variations based on gravity data.
• Mapping magnetic anomalies for resource exploration based on magnetic data.
• Conducting integrated geophysical studies based on the merged ship-track, satellite, and onshore data.

Strengths

• Grid resolutions are specified as 250-1000 meters.
• Data represents a major upgrade of marine ship-track data in Australian waters.
• Integrates data from multiple sources including ship-tracks, satellite, and high-resolution onshore data.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Australian Geological Survey Organisation, Desmond Fitzgerald and Associates, Australian Hydrographic Service

Collection Method

Integration and leveling of ship-track data merged with satellite and onshore sources.

Freshness

Last updated 2026-06-04 07:08:10.148065; freshness should be verified.

Geography

Australia's marine margins