Sediment transport in distributary channels and its export to the pro-deltaic environment in a tidally dominated delta: Fly River, Papua New Guinea
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2004
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Abstract
Current metre deployments, suspended sediment measurements and surface sediment samples were collected from three locations within distributary channels of the tidally dominated Fly River delta in southern Papua New Guinea. Net bedload transport vectors and the occurrence of elongate tidal bars indicate that mutually evasive ebb- and flood-dominant transport zones occur in each of the distributary channels. Suspended sediment experiments at two locations show a phase relationship between tidal velocity and sediment concentration such that the net suspended sediment flux is directed seaward. Processes that control the export of fluid muds with concentrations up to 10 g l−1 from the distributary channels across the delta front and onto the pro-delta are assessed in relation to the available data. Peak spring tidal current speeds (measured at 100 cm above the bed) drop off from around 100 cm s−1 within the distributary channels to
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keene2004continentalsediment
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| Authors | Peter T. Harris,Michael Hughes,Elaine K. Baker,Robert W. Dalrymple,Jock B. Keene;Peter T. Harris;Michael Hughes;Elaine K. Baker;Robert W. Dalrymple;Jock B. Keene; |
| Journal | continental shelf research |
| Year | 2004 |
| DOI |
10.1016/j.csr.2004.07.017
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