Levelled Marine Geophysical Survey Line Data for the Australian Region

Australian marine gravity, magnetic, and bathymetry ship-track line data levelled for gridding. The compilation includes data from Geoscience Australia surveys since the 1970s and other institutions, processed to reduce mismatches between intersecting surveys. Levelling work was performed by Desmond FitzGerald & Associates from 1998-2001 and Ron Hackney in 2009-2011, with final review by Yvette Poudjom Djomani.

Use Cases

• Modeling subsurface geological structures based on levelled gravity and magnetic line data.
• Creating continuous bathymetric surfaces for ocean floor mapping based on levelled ship-track data.
• Integrating multi-vintage survey data for regional geophysical analysis based on the levelling process.
• Studying tectonic plate boundaries and marine geology based on potential field data.

Strengths

• Data has undergone a levelling process to reduce mismatches between intersecting surveys of various vintages.
• Includes both unlevelled (source) and levelled versions of gravity, magnetic, and bathymetry data.
• Compilation spans surveys acquired since the 1970s, providing a multi-decade temporal scope.

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 as may be recorded on seismic reflection surveys.

Provenance

Source

Geoscience Australia marine geophysical survey database 'Mardat' and other institutions.

Collection Method

Levelled ship-track line data derived from the Mardat database.

Time Range

Surveys acquired since the 1970s.

Freshness

Last updated 2026-05-05 00:14:53.682491; freshness should be verified.

Geography

Australian region.