Broken Hill - Menindee Gravity

Release of Point Located Data

Geoscience Australia announces the release of the Broken Hill - Menindee gravity data set consisting of 182 new gravity stations and 20,514 existing gravity stations. The diagram below shows the distribution of old and new gravity data.

The new data were acquired as part of Geoscience Australia's ongoing program to add to the National Gravity Database. Data from the new and existing stations will assist in the ground truth study of recently acquired airborne gravity data over the same geographic area near Broken Hill.

The new data were acquired in May 2003 at a station spacing of 2km x 2km in three separate areas around Broken Hill. As part of the contract, terrain corrections were calculated for the new data as well as for the 20,514 existing gravity stations. This data release includes the terrain corrected gravity values presented as Complete Bouguer Anomaly values for both new and existing data. The existing data sourced from Geoscience Australia, NSW Department of Mineral Resources and industry surveys have previously been released with Simple Bouguer Anomaly values only.

The Broken Hill - Menindee gravity data set is an adjunct to the May 2003 release of the National Gravity Database. Purchasers of the 2003 National Gravity Database release will be supplied with this update free of charge on request.

Geoscience Australia will supply the point located digital data on one CD-ROM together with all data previously released in May 2003.

Release Date: 25 July 2003
http://www.ga.gov.au/minerals/