Document Detail

Circulation and suspended sediment transport in a coral reef lagoon: the south-west lagoon of New Caledonia.
MedLine Citation:
PMID:  20637477     Owner:  NLM     Status:  MEDLINE    
The south-west lagoon of New Caledonia is a wide semi-open coral reef lagoon bounded by an intertidal barrier reef and bisected by numerous deep inlets. This paper synthesizes findings from the 2000-2008 French National Program EC2CO-PNEC relative to the circulation and the transport of suspended particles in this lagoon. Numerical model development (hydrodynamic, fine suspended sediment transport, wind-wave, small-scale atmospheric circulation) allowed the determination of circulation patterns in the lagoon and the charting of residence time, the later of which has been recently used in a series of ecological studies. Topical studies based on field measurements permitted the parameterisation of wave set-up induced by the swell breaking on the reef barrier and the validation of a wind-wave model in a fetch-limited environment. The analysis of spatial and temporal variability of suspended matter concentration over short and long time-scales, the measurement of grain size distribution and the density of suspended matter (1.27 kg l(-1)), and the estimation of erodibility of heterogeneous (sand/mud, terrigenous/biogenic) soft bottoms was also conducted. Aggregates were shown to be more abundant near or around reefs and a possible biological influence on this aggregation is discussed. Optical measurements enabled the quantification of suspended matter either in situ (monochromatic measurements) or remotely (surface spectral measurements and satellite observations) and provided indirect calibration and validation of a suspended sediment transport model. The processes that warrant further investigation in order to improve our knowledge of circulation and suspended sediment transport in the New Caledonia lagoon as well as in other coral reef areas are discussed, as are the relevance and reliability of the numerical models for this endeavour.
S Ouillon; P Douillet; J P Lefebvre; R Le Gendre; A Jouon; P Bonneton; J M Fernandez; C Chevillon; O Magand; J Lefèvre; P Le Hir; R Laganier; F Dumas; P Marchesiello; A Bel Madani; S Andréfouët; J Y Panché; R Fichez
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2010-07-15
Journal Detail:
Title:  Marine pollution bulletin     Volume:  61     ISSN:  1879-3363     ISO Abbreviation:  Mar. Pollut. Bull.     Publication Date:  2010  
Date Detail:
Created Date:  2010-08-25     Completed Date:  2011-01-10     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0260231     Medline TA:  Mar Pollut Bull     Country:  England    
Other Details:
Languages:  eng     Pagination:  269-96     Citation Subset:  IM    
Copyright Information:
Copyright (c) 2010 Elsevier Ltd. All rights reserved.
Université de Toulouse, UPS OMP-PCA, LEGOS, 14 av Edouard Belin, Toulouse F-31400, France.
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MeSH Terms
Geologic Sediments / analysis*
Models, Theoretical
New Caledonia
Particle Size
Seawater / analysis,  chemistry*
Time Factors
Water Movements*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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