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Fine-sediment dynamics in the Mekong river estuary, Vietnam

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dc.contributor Australian Institute Of Marine Science
dc.contributor Vietnam Marine Sci & Technol Assoc
dc.contributor Australian Inst Marine Sci
dc.contributor Hydrometeorol Serv
dc.contributor Australian Institute Of Marine Science (aims) en THUY, NN WOLANSKI, E HUAN, NN DAO, LT NHAN, NH 2013-02-28T06:53:02Z 2013-02-28T06:53:02Z 2017-03-21T01:21:20Z 2019-07-08T02:14:21Z 2017-03-21T01:21:20Z 2017-03-21T01:21:20Z 2013-02-28T06:53:02Z 2019-07-08T02:14:21Z 1996-11-01
dc.identifier 2640 en
dc.identifier.citation Wolanski EJ, Huan NN, Dao LD, Nhan NH and Thuy NN (1996) Fine sediment dynamics in the Mekong River estuary, Vietnam. Estuarine Coastal and Shelf Science. 43: 565-582. en
dc.identifier.issn 0272-7714
dc.description Link to abstract/full text - en
dc.description.abstract Field studies of fine-sediment transport were carried out in the Mekong River estuary, Vietnam, in the high-flow season of November 1993. In the freshwater region, erosion and deposition of suspended sediment occurred at tidal frequency with a strong down-river transport at a mean velocity of I m s(-1) and mean suspended-solid concentration of about 250 mg l(-1). Also, the suspended sediment was mostly fine silt, and the clay fraction accounted for only 15%. The suspended sediment was transported either as individual particles or agglomerated with organic detritus. At the mouth of the estuary, a salt wedge was present but was flushed out of the estuary at low tide. Flow reversal occurred across the pycnocline. A turbidity maximum zone was present at the toe of the salt wedge at flood tide. Most of the suspended sediment was coagulated with little organic matter. The bulk of the suspended sediment was exported to coastal waters, but some sediment returned to the estuary in the salt wedge. Data for the low-flow season are sparse but suggest that partially well mixed estuarine conditions prevail, with salinity penetrating about 40 km inland, carrying fine-sediment up-river to a turbidity maximum zone. Most of this sediment would have been deposited in shallow coastal waters in the previous high-flow seasons. The construction of large hydro-electric dams further upstream on the Mekong River may exacerbate siltation patterns in the estuary. (C) 1996 Academic Press Limited
dc.description.uri en
dc.language English
dc.language en en
dc.publisher Academic Press en
dc.relation.ispartof Null
dc.relation.ispartof Estuarine Coastal and Shelf Science - pages: 43: 565-582 en
dc.subject Salinity Intrusion
dc.subject Transport
dc.subject Ocean
dc.subject System
dc.subject Turbidity Maximum
dc.subject Discharge
dc.subject Salt Wedge
dc.subject Papua-new-guinea
dc.subject Flocs
dc.subject Sediments
dc.subject Coagulation
dc.subject Marine & Freshwater Biology
dc.subject Suspended Sediment
dc.subject Oceanography
dc.subject Mekong Delta
dc.subject Amazon River
dc.subject Siltation
dc.title Fine-sediment dynamics in the Mekong river estuary, Vietnam
dc.type journal article en
dc.identifier.doi 10.1006/ecss.1996.0088 en
dc.identifier.wos WOS:A1996VU65800003

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