Publishing Large National Datasets in an Online Virtual Globe

  • Mr Tony Pack, Geoscience Australia, Australia
  • Mr Michael de Hoog, Geoscience Australia, Australia
  • Geoscience Australia has developed an interactive 3D viewer for three national datasets; the new Radiometric Map of Australia, the Magnetic Anomaly Map of Australia, and the Gravity Anomaly Map of the Australian Region.

    The interactive virtual globe is based on NASA's open source World Wind Java Software Development Kit (SDK) and provides users with easy and rich access to these three national datasets. Users can view eight different representations of the radiometric map and compare these with the magnetic and gravity anomaly maps and satellite imagery; all draped over a digital elevation model. The full dataset for the three maps is approximately 50GB (in ER Mapper format), while the compressed full resolution online data set is only 2GB and only required data is downloaded to the user’s computer.

    In this paper we will address the processes for selecting the World Wind application over other solutions, how the data was prepared for online delivery, the development of the 3D Viewer using the Java SDK, issues involving connecting to other online data sources, and Geoscience Australia's future publishing and development goals.