2019 Isostatic residual grids of Australia using elevation derived and seismic Moho grids

Australia's gravity anomaly grids produced by Intrepid Geophysics for Geoscience Australia. The grids are derived from the 2019 national Complete Bouguer Anomaly grid using the Airy isostatic compensation method, incorporating new elevation models and seismic-derived Moho depth grids. Comparisons show good similarity with Geoscience Australia's 2016 and 2019 models, with differences typically less than a few um/s².

Use Cases

• Modeling crustal density structure based on the Airy isostatic compensation method
• Comparing seismic-derived and Airy-derived Moho depth models for regional geology
• Analyzing gravity anomalies for mineral exploration based on the isostatic residual grids
• Testing geophysical models against benchmark grids from Geoscience Australia

Strengths

• Grids are compared against Geoscience Australia's 2016 and 2019 isostatic models, showing differences typically less than a few um/s²
• Utilizes two distinct methodologies: Airy-derived and seismic-derived Moho depth calculations
• Derived from the 2019 GA national Complete Bouguer Anomaly grid

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment
• Description metadata is limited; actual data quality requires manual inspection after download

Provenance

Source

Intrepid Geophysics, produced on behalf of Geoscience Australia

Collection Method

Airy Isostatic compensation method applied to the 2019 Complete Bouguer Anomaly grid, using new elevation and seismic Moho grids

Freshness

Last updated 2026-04-16 15:58:56.720131; freshness should be verified

Geography

Australia