Magnetic Anomaly Grid of the Australian Region, 1 km Resolution

3,022,656 data points form a magnetic anomaly grid covering the complete Australian margin from 8S to 52S and 106E to 172E. This January 2002 edition is the first integrated onshore/offshore grid for the region, with a cell size of 0.01 degrees (approximately 1 km). The data were compiled by the Australian Ocean Data Network, incorporating levelled marine sectors and an earlier onshore grid.

Use Cases

• Model subsurface geology based on magnetic anomaly measurements.
• Map tectonic features across the Australian continental margin using the integrated onshore/offshore coverage.
• Support mineral exploration by identifying magnetic signatures indicative of resource deposits.
• Assess data continuity challenges for grid merging processes based on the described join issues.

Strengths

• Integrated onshore/offshore coverage across 8S - 52S, 106E - 172E, a first for the region.
• Grid derived from 3,022,656 individual data points.
• High spatial resolution with a cell size of 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.
• Several places at the join between onshore and offshore grids do not match, as noted in the description.

Provenance

Source

Australian Ocean Data Network

Collection Method

Combination of levelled marine data sectors (some processed in collaboration with Intrepid Geophysics) and an earlier onshore grid.

Time Range

Edition dated January 2002.

Freshness

Last updated 2026-06-17 02:20:45.145695; freshness should be verified.

Geography

Australian continental margin (8S - 52S, 106E - 172E).