North West Shelf Joint Environmental Management Study:InVitro Inputs - Bathymetry

Updated: 2006-07-18

The Auslig 250k series 1 Topograpic data (Geoscience Australia 2000) was used along with a North West Shelf coastline contour to generate a 0.008 degree grid using the ArcInfo topogrid command. This was merged with the AGSO bathymetric 30 second grid (Geoscience Australia) to form a complete bathymetric and topographic grid at 0.008 degree resolution for the complete North West Shelf study area. Finally this grid was projected to a Lambert Conformal Conic projection for use by the model. Conformal projections, ensure that scale is invariant in all directions locally, but large grids/areas will be distorted because of differential 'stretching' of areas across large scales.