Reports

Incorporation of the high-resolution 3D depth model of the GBR into the e-Atlas for visualisation by end-users

Authors: Beaman, R. J.

Year: 2010

Publication: Marine and Tropical Sciences Research Facility (MTSRF) Transition Project 3 Final Report, Reef and Rainforest Research Centre, Cairns, Australia, pp. 3 plus Appendix 1.

Abstract

MTSRF Project 2.5i.1a developed a new high-resolution DEM for the GBR and adjoining Coral Sea at a grid pixel resolution of 0.001-arc degree or about 100 m (see Project 3DGBR link at http://www.deepreef.org/projects/48-depth-model-gbr.html). The geographic coverage ranges from latitude 10° to 29° South, longitude 142° to 160° East. Including the adjacent Queensland coast and hinterland, the new grid represents an area of about 3,000,000 km2. The project utilised the latest data sourced from ship-based multibeam and singlebeam echosounder surveys, airborne lidar bathymetry surveys, and satellite remotely sensed imagery. The new grid is called gbr100, and is a significant improvement on existing regional-scale bathymetry models.

The development of high-resolution grid, image and vector files in ESRI ArcGIS formats pose a challenge to end-users who may not hold specific GIS software licences in order to access the various data files. A solution is to utilise the e-Atlas (http://e-atlas.org.au) and Deepreef Explorer (http://www.deepreef.org/) websites as a means of web-delivered visualisation of the GBR seascape to end-users. This would entail close liaison between the gbr100 developer and the e-Atlas team, so that these fundamental spatial datasets can be illustrated and communicated using the interactive mapping system of the e-Atlas.

This report contains a description of the various datasets and multi-media imagery derived from the new gbr100 grid. The report discusses the two websites used to provide the data files for download or interactive mapping. Finally, the report highlights the great media and public interest in the Project 3DGBR project following a joint JCU-RRRC media release on 28 September 2010, shown as Appendix 1.

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