Magnetic Anomaly Grid of the Australian Region, 2002 Edition

3,022,656 data points form the first integrated onshore/offshore magnetic anomaly grid for the complete Australian margin. The January 2002 edition covers 8S - 52S, 106E - 172E with a 0.01 degree (approx. 1 km) cell size. Data were compiled by the Australian Ocean Data Network, merging levelled and unlevelled marine sectors with an earlier onshore grid.

Use Cases

• Modeling subsurface geological structures based on magnetic anomaly measurements.
• Integrating onshore and offshore geophysical data for continental margin studies.
• Calibrating regional magnetic surveys using the specified levelled and unlevelled sectors.
• Assessing data continuity issues at the onshore-offshore grid joins mentioned in the description.

Strengths

• First integrated onshore/offshore magnetic anomaly grid for the complete Australian margin.
• Grid is derived from 3,022,656 data points and has a spatial resolution of approximately 1 km.
• Covers a large geographic extent from 8S to 52S and 106E to 172E.

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.
• The description notes mismatches at joins between the onshore and offshore grids due to poor control during the merging process.

Provenance

Source

Australian Ocean Data Network

Collection Method

Combination of levelled and unlevelled marine magnetic survey data with an existing onshore grid.

Time Range

Edition dated January 2002, with marine data levelling completed in 2000.

Freshness

Last updated 2026-06-27 15:52:39.595716; freshness should be verified.

Geography

Australian region, extending from 8S to 52S and 106E to 172E.