Gravity Field of Offshore Australia with Regional Provinces and Crustal Analysis

A geophysical dataset describing the free-air and Bouguer gravity anomaly fields for offshore Australia. The data has been divided into approximately fifty regional provinces characterized by anomaly trends and levels, and is discussed in relation to structural and bathymetric features. The dataset was published by the Australian Ocean Data Network and was last updated in April 2026.

Use Cases

• Modeling crustal thickness variations based on Bouguer anomaly values mentioned in the description.
• Analyzing structural elements on the continental shelf based on correlations with free-air anomaly provinces.
• Investigating isostatic equilibrium and crust/mantle interface adjustments based on regional free-air anomaly values.
• Studying the gravity edge effect at continental slopes based on anomaly ridges and troughs reaching ±70 mGal.

Strengths

• Divided into approximately fifty regional gravity provinces for detailed analysis.
• Includes both free-air and Bouguer anomaly fields for different analytical purposes.
• Discusses correlations with specific structural features like Precambrian shields and mobile belts.
• Provides quantitative anomaly magnitude references, such as ±70 mGal over steep slopes.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is provided in PDF and HTML formats, which may require extraction for computational analysis.

Provenance

Source

Australian Ocean Data Network via data_gov_au.

Collection Method

Likely derived from marine geophysical surveys and satellite altimetry.

Time Range

null

Freshness

Last updated 2026-04-10 18:06:40.073814; freshness should be verified.

Geography

Offshore Australia, including continental shelves, slopes, marginal plateaus, terraces, and adjacent abyssal plains.