Marine Geophysical Survey Data for the Australian Region, Levelled for Gridding

Australian region ship-track line data for gravity, magnetic, and bathymetry measurements, levelled to reduce errors between surveys. The compilation includes data from Geoscience Australia and other institutions, with surveys acquired since the 1970s. Data were levelled by Desmond FitzGerald & Associates (1998-2001) and Ron Hackney (2009-2011), with final review by Yvette Poudjom Djomani.

Use Cases

• Create integrated gravity anomaly maps based on the levelled ship-track data.
• Model seafloor topography and geological structures based on bathymetry and magnetic measurements.
• Analyze regional tectonic history based on combined potential field datasets from multiple vintages.

Strengths

• Data has been levelled to reduce misties between intersecting surveys of various vintages.
• Includes both unlevelled source data and the final levelled data for each survey.
• Surveys span a time range from the 1970s onwards, providing historical context.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The compilation does not include shot-indexed data from seismic reflection surveys.

Provenance

Source

Geoscience Australia and other institutions.

Collection Method

Derived from the Geoscience Australia marine geophysical survey database 'Mardat' and levelled for gridding.

Time Range

Surveys acquired since the 1970s.

Freshness

Last updated 2026-05-14 09:11:19.995338; freshness should be verified.

Geography

Australian region.