The Australian Ocean Data Network provides data on crustal mass deficiency (CMD) across Australia and nearby marine areas, derived from seismic refraction surveys. The dataset estimates density-depth structures and calculates CMD values ranging from about 13 to 21 kt/m^2 on land and 15 to 17 kt/m^2 in marine regions. It was last updated on 2026-04-10.
Use Cases
- Modeling regional isostatic compensation based on crustal mass deficiency (CMD) values.
- Analyzing the relationship between crustal density-depth structures and free-air gravity corrections.
- Mapping crustal mass variations across the Australian continent and its marine margins.
Strengths
- Provides specific CMD value ranges: 13-21 kt/m^2 on land and 15-17 kt/m^2 in marine areas.
- Derived from seismic refraction surveys, a standard geophysical method.
- Includes corrections for average elevation and free-air gravity.
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
- Collection Method
- Calculated from averages of seismic refraction survey data on crustal velocities and layer thicknesses.
- Time Range
- null
- Freshness
- Last updated 2026-04-10 18:04:30.551438; freshness should be verified.
- Geography
- Australia and nearby marine areas