Australian Ocean Data Network provides a historical record of gravity measurements across Australia and its surrounding oceans from 1819 to 1976. The dataset details the evolution of measurement techniques from early pendulum experiments to later gravity meter surveys, including national networks and marine reconnaissance. It covers contributions from various international expeditions and surveys conducted by government authorities, universities, and private companies.
Use Cases
- Analyze the historical evolution of gravity measurement accuracy based on the described progression from 10 mGal pendulums to 0.01 mGal precision networks.
- Study regional geophysical anomalies based on the compilation of Bouguer anomaly maps mentioned in the description.
- Map the spatial coverage of gravity surveys based on described reconnaissance efforts using helicopters and marine vessels.
- Calibrate modern gravity instruments based on the described establishment of calibration ranges and the Australian Calibration Line.
Strengths
- Provides a long temporal coverage spanning 157 years from 1819 to 1976.
- Describes a progression of measurement accuracy, from 10 mGal to 0.01 mGal.
- References a national network of 59 stations established in 1950-51.
- Includes marine gravity surveys from 1956 and reconnaissance coverage completed in 1973.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data may reflect geographic/temporal/source bias inherent to data_gov_au.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Aggregated from historical expeditions, government surveys, university research, and private company prospecting.
- Time Range
- 1819-1976
- Freshness
- Last updated 2026-05-05 00:29:16.215147; freshness should be verified.
- Geography
- Australia and surrounding oceans