Magnetic Anomaly Grid of Australia and Surrounding Ocean

January 2002 edition of the Magnetic Anomaly Grid of the Australian Region, covering 8S to 52S and 106E to 172E. The grid integrates onshore and offshore magnetic data at a 0.01-degree cell resolution, containing 3,022,656 data points. It was produced by the Australian Ocean Data Network, with marine data levelled in collaboration with Intrepid Geophysics.

Use Cases

• Modeling subsurface geology based on magnetic anomaly patterns.
• Resource exploration targeting based on integrated onshore/offshore magnetic data.
• Geophysical research on the structure of the Australian continental margin.
• Validating and merging regional magnetic surveys across land and sea boundaries.

Strengths

• Integrates onshore and offshore data for the complete Australian margin, a first for the region.
• Contains 3,022,656 data points used to create the marine grid.
• Specifies a grid cell size of 0.01 degrees (approximately 1 km).

Limitations

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

Provenance

Source

Australian Ocean Data Network

Collection Method

Combination of levelled and unlevelled marine survey sectors with an onshore grid.

Time Range

Data represents the January 2002 edition.

Freshness

Last updated 2026-06-23 06:09:42.677647; freshness should be verified.

Geography

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