Sediment mobility due to currents and waves in the Torres Strait–Gulf of Papua region |
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| Authors: | MA Hemer PT Harris R Coleman J Hunter |
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| Institution: | aIASOS, University of Tasmania, Private Bag 77, Hobart, TAS 7001, Australia;bGeoscience Australia, GPO Box 378, Canberra, ACT 2601, Australia;cSchool of Geography and Environmental Studies, University of Tasmania, Private Bag 78, Hobart, TAS 7001, Australia;dAntartic Co-operative Research Centre, Private Bag 80, TAS 7001, Australia |
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| Abstract: | The MECO hydrodynamic model (MECO Technical Report No. OMR-118/120, CSIRO Marine Research, 1998) was adapted for the Torres Strait–Gulf of Papua region at 0.05° resolution. Validation of the hydrodynamic model was carried out against observed current meter data and calculated tidal sea levels. Dispersal pathways of sediments derived from the Fly River, and from a resuspension event along the northern Great Barrier Reef were investigated using an Eulerian approach. Sediment input into Torres Strait is found to be greater during the Trade season by approximately 10%. Wave data were also obtained, and together with hydrodynamic model output, sediment mobility due to currents, waves and wave–current interactions was considered for both the Trade and Monsoon seasons. Sediment mobility in the Gulf of Papua is dominated by wave motion, whereas Torres Strait is a mixed environment of waves and tidal currents. |
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| Keywords: | Hydrodynamic model Sediment mobility Torres Strait |
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