How to access New South Wales geophysical data

Abstract

This article provides instruction on how to access large repositories of geophysical data held by the New South Wales Government. This data was acquired by government and private companies. Various products have been produced from this data and made available to the public; most are free. Each product was produced for different purposes and is delivered through different systems, which are not broadly utilised by the geophysical community. The following products are available to the public. (1) Regional project data comprises airborne magnetic, radioelement, digital elevation, gravity, hyperspectral, electromagnetic (EM) and ground gravity data acquired using government funding. This data is available on portable hard drive and some is available through the Geoscience Australia GADDS portal. This data is ideal for producing potential field models, or custom imagery. (2) Statewide grids, images and maps are merged regional airborne magnetic, radioelement, digital elevation and ground gravity data. These are available respectively through portable hard drive, MinView and DIGS. This data is suited to large-scale geological interpretations, or producing custom clipped imagery. (3) The 250K geophysical imagery suite includes zip files of prepared standard imagery clipped from our statewide grids that enhance subtle features not readily visible in the statewide images. The 250K suite can be downloaded through DIGS. (4) The open-file company data repository contains approximately 1000 surveys (of various geophysical techniques) submitted by title holders. The survey location can be viewed in MinView and requested by email. This data usually has higher resolution than NSW Government regional project data. It is excellent for producing models, small-scale geological interpretation and desktop studies.