Release of Australian National Gravity Database (March 2004 edition)

Release Date: 22 March 2004

Geoscience Australia announces the release of the 2004 edition of the Australian National Gravity Database. This release contains point data values in the area extending from 8° S to 48° S and 108° E to 162° E. All data are provided in GDA94 coordinates. The 2004 release includes both onshore and offshore data and has approximately 192,000 additional gravity stations compared to the 2003 release. These extra data have come from:

• recent acquisitions to the database; and
• surveys with expired embargo dates.

The digital data will be supplied by Geoscience Australia on one CD-ROM. The CD-ROM will include the ER Mapper gravity grid of the Australian Region, produced at a cell size of 0.5 minutes of arc (equivalent to approximately 800 metres), previously released in June 2001.

The Australian National Gravity Database contains over 1,200,000 point gravity observations read over the Australian onshore and offshore regions. These data have been collected from gravity surveys dating back to 1937. This repository of gravity information is a valuable national asset with importance to the mineral and petroleum exploration industries, geodesy and the international scientific community. It is a cooperative effort among Geoscience Australia, State and Territory Geological Surveys, private companies, universities and other organisations.

A copy of the CD-ROM containing the Australian National Gravity Database and grid may be purchased at a cost of A$99.00 (including GST), plus postage and packing, from the Sales Centre.

Alternatively both the database and grid may be downloaded free of charge from the Geoscience Australia website at the Free Data Downloads web page, or, by using the Geophysical Archive Data Delivery System (GADDS), clients may select data for a specific area of interest and download that data from the database.