Bathymetry Map
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Australia marine surveys base map
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These colour and greyscale images are a digital pictorial representation of the 250 decimal degree bathymetric grid of the Australian region. This image is a dirivitive of the origional 30 arc second grid of Australia. There have been recent swath mapping additions to the origional in bathymetric data that have vastly improve the quality of the data and these images contain that information, they are however a work in progress and official higher resolotion datasets are expected in the near future. The original gridded bathymetry model for the Australian continental margin was generated from 14,000,000 data points gathered from numerous data sources and compiled by Cameron Buchanan at the Australian Geological Survey Organisation, as part of the Continental Margins Program. The database is a 30-arc-second model that can display undersea features as small as 900 metres (as seen in the images). The model has been compiled over several years from hundreds of marine surveys. It includes data acquired by industry and foreign agencies, and from over 200 days of modern deep-water seafloor swath-mapping surveys. In some areas not covered by marine surveys, it incorporates bathymetry data derived from satellite measurements.
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The bathymetry contours are an interpretation of the the sea floor in the region of the Bremer sub-basin.
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