Magnetic Anomaly Grid of the Australian Region, January 2002 Edition

Geoscience Australia Data produced the January 2002 edition of the Magnetic Anomaly Grid of the Australian Region. This version is the first integrated onshore/offshore magnetic anomaly grid for the complete Australian margin, covering 8S - 52S, 106E - 172E with a grid cell size of 0.01 degree (approximately 1 km). The database contains 3,022,656 data points from which the marine grid was created.

Use Cases

• Modeling subsurface geological structures based on magnetic anomaly data.
• Resource exploration targeting based on integrated onshore and offshore magnetic signatures.
• Geophysical research on the Australian continental margin based on the 1 km resolution grid.
• Assessing data continuity challenges for grid merging processes based on described onshore/offshore mismatches.

Strengths

• First integrated onshore/offshore magnetic anomaly grid for the complete Australian margin.
• Covers a large geographic area from 8S to 52S and 106E to 172E.
• Grid is derived from a database containing 3,022,656 data points.
• Grid cell size is specified as 0.01 degree (approximately 1 km).

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• There are mismatches at the join between onshore and offshore grids due to poor control during the earlier merging process.

Provenance

Source

Geoscience Australia Data

Collection Method

Combined levelled and unlevelled marine data sectors with an onshore grid. The eastern marine sector was levelled in collaboration with Intrepid Geophysics.

Time Range

Data represents the January 2002 edition.

Freshness

Last updated 2026-05-14 04:39:30.760171; freshness should be verified.

Geography

Australian region extending across 8S - 52S, 106E - 172E.