2019 Australian Gravity Map with De-trended Isostatic Residual Data
Updated 2mo ago
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Description
The 2019 B-Series De-trended Global Isostatic Residual Gravity Map of Australia is a Hue-Saturation-Intensity image derived from the 2019 Australian National Gravity Grids. It combines 1.4 million ground gravity observations, 345,000 line km of airborne gravity data, and 106,000 line km of gravity gradiometry data, sourced from government, industry, and research organizations from the 1940s onward. The map uses northwest shading and a linear color scale from -500 µm.s-2 to +500 µm.s-2.
Use Cases
Detect subsurface geological anomalies based on de-trended gravity residuals.
Model crustal density variations based on the global isostatic residual gravity data.
Integrate gravity data with other geophysical datasets for mineral exploration.
Train ML models for geospatial feature recognition using the HSI image representation.
Analyze long-term gravity data trends from the 1940s to present day.
Strengths
Combines over 1.4 million ground gravity observations.
Integrates 345,000 line km of airborne gravity and 106,000 line km of gravity gradiometry data.
Data collection spans from the 1940s to the present day.
Limitations
Column-level documentation is absent; field semantics must be inferred after download.
Data is provided as a PDF, which may limit direct computational analysis.
Row count is unknown, which may limit suitability assessment.
Provenance
Source
Australian Ocean Data Network
Collection Method
Combination of ground, airborne, and gradiometry data from the Australian National Gravity Database and National Australian Geophysical Database, plus the Global Gravity Grid from Scripps Institution of Oceanography.
Time Range
1940s to 2019
Freshness
Last updated 2026-04-16 16:10:55.348851; freshness should be verified.