Gravimetry in Australia, 1819-1976

The earliest known gravity measurements in Australia were made by French expeditions in 1819 and 1824. A national network of 59 stations was established in 1950-51 with an accuracy of about 0.8 mGal, and precision improved to about 0.01 mGal by Soviet-Australian measurements in 1973-74. The data was compiled by various government authorities, universities, and private companies, and is hosted by the Australian Ocean Data Network.

Use Cases

• Analyzing long-term changes in Earth's gravity field based on historical pendulum and gravity meter measurements.
• Mapping Bouguer anomalies for geophysical prospecting and resource exploration, as mentioned in the description.
• Calibrating modern gravity survey equipment using the established Australian Calibration Line (ACL).
• Studying the historical progression of measurement accuracy from 10 mGal in the 19th century to 0.01 mGal in the 1970s.

Strengths

• Covers a long temporal range from 1819 to 1976, documenting the evolution of gravimetric science.
• Includes a national network of 59 stations established with an accuracy of about 0.8 mGal.
• Describes high-precision measurements achieving about 0.01 mGal from Soviet-Australian collaboration in 1973-74.

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 bias inherent to data_gov_au, focusing on specific surveys and periods.

Provenance

Source

Australian Ocean Data Network

Collection Method

Compiled from pendulum and gravity meter surveys by international expeditions, government authorities, universities, and private companies.

Time Range

1819-1976

Freshness

Last updated 2026-06-23 01:05:15.557718; freshness should be verified.

Geography

Australia, including capital cities, continental coverage, offshore islands, reefs, and the continental shelf.