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JOURNAL OF GEOPHYSICAL RESEARCH,
VOL. 113,
F01S15,
9 PP., 2008
doi:10.1029/2006JF000673
Development of a bathymetric grid for the Gulf of Papua and adjacent areas: A note describing its development
Marine and Coastal Environment Group, Geoscience Australia, Canberra, ACT, Australia
A new bathymetric grid for the Gulf of Papua and northern Australia was produced for the area 140°–150°E, 6°–14°S, with a 3.6″ (∼110 m) cell size. New multibeam sonar surveys have added much needed detail to a region of the seabed where previously little was known. In shallow Australian waters, bathymetry derived from Landsat satellite imagery was used to supplement traditionally acquired bathymetric data. For onshore areas, Shuttle Radar Topography Mission data were used for topographic control. The final grid revealed numerous features not observed in previous compilations of bathymetric data for the region. Bathymetric surveys on the continental shelf revealed an incised shelf with highly variable valley morphology. Prograding clinoforms are infilling valleys on the continental shelf and mark the seaward extension of the Fly River delta. A linear, relict shelf-edge barrier marks the shelf break in the northern Ashmore Trough region, elsewhere the shelf break is scalloped and incised by canyons. Large mass transport deposits are widespread on the continental slope and indicate regions where mass wasting is common.
Received 6 September 2006; accepted 7 September 2007; published 16 February 2008.
Citation: (2008), Development of a bathymetric grid for the Gulf of Papua and adjacent areas: A note describing its development, J. Geophys. Res., 113, F01S15, doi:10.1029/2006JF000673.
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