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Suspended matter in the Scheldt estuary

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Abstract

The Scheldt estuary is characterised by a specific energy pattern resulting from the interaction of wave energy, tidal energy and river energy. It divides the estuary into three parts and governs suspended matter transport and distribution pattern. Observation of suspended matter transport shows the existence of three estuarine turbidity maxima (ETM), a marine-dominated ETM in the lower estuary at the river mouth, a river-dominated ETM in the upper estuary with suspended matter concentration reaching up to 300 mg/l, and the most important tide-dominated ETM in the middle estuary with suspended matter concentrations from several hundred milligrams per litre up to a few grams per litre. Resuspension is the dominant phenomenon in this last ETM due to the tidal related bottom scour, which is initiated when a critical erosion velocity of 0.56 m/s is exceeded. An assessment of residual current along the axis of the estuary shows distinctive pattern between the surface water flow and the near bottom water flow. Also the local morphology of the river, natural or man-made, has a prominent effect on the orientation and strength of the residual currents flowing along either side of the river or river bend. Evaluation of suspended matter concentration in relation to the current flow shows no systematic correlation either because of phenomena as scour lag and settling lag mainly in the middle estuary, or because of the current independency character of uniform-suspension mainly in the upper and lower estuary. Quantification of suspended matter load exhibits a net downstream transport from the upper estuary, a near-equilibrium sustainable status in the middle estuary and a net upstream transport of suspended matter from the lower estuary. The characteristic of suspended matter is induced by and is a function of e.g. tidal phase, spring-neap tide, longitudinal and vertical distribution mechanisms, seasons, short and long terms of anthropogenic influence and/or estuarine maintenance. Suspended matter is dominated by complex and cohesive organo-mineral aggregates. It consists of a variable amount of an inorganic fraction (average of 89%) and an organic fraction and occurs largely as flocs, the size of which is remarkably larger in the upper estuary and smallest within the ETM in the middle estuary. Independent time series measurements (1990–2000) of suspended matter property show an increasing sand fraction, a decreasing organic matter content, a rise in δ13C as well as a decrease in water transparency. These independent measurements exhibit coherent consequences of estuarine maintenance operations. Maintenance dredging of the shipping channel and harbours and dumping operation in the Scheldt strengthen marine influence further landward, resulting in a sustained tidal range increment and upstream flow and transport of suspended matter.

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References

  • G.P. Allen JC. Salomon P. Bassoullet Y. Du Penhoat C. De Grandpré (1980) ArticleTitleEffects of tides on mixing and suspended sediment in macrotidal estuaries Sedimentary Geology 26 69–90 Occurrence Handle10.1016/0037-0738(80)90006-8

    Article  Google Scholar 

  • J. Avoine (1982) ArticleTitleMécanismes controlant la dynamique des sédiments en suspension dans l’estuaire de la Seine Mémoires Société géologique de France NS 144 IssueIDLXI 17–25

    Google Scholar 

  • C. Baeteman P.-Y. Declercq (2002) ArticleTitleA synthesis of early and middle Holocene coastal changes in the western Belgian lowlands Belgeo 2 77–107

    Google Scholar 

  • W. Baeyens Y. Adam J. P. Mommaerts G. Pichot (1981) Numerical simulations of salinity, turbidity and sediment accumulation in the Scheldt estuary J. C. J. Nihoul (Eds) Ecohydrodynamics Amsterdam, Elsevier Scientific Publishing Company Amsterdam 319–332

    Google Scholar 

  • W. Baeyens B. Eck Particlevan C. Lambert R. Wollast L. Goeyens (1998) ArticleTitleGeneral description of the Scheldt estuary Hydrobiologia 366 1–14 Occurrence Handle10.1023/A:1003164009031

    Article  Google Scholar 

  • Bastin A. (1974). Regionale sedimentologie en morfologie van de zuidelijke Noordzee en van het Schelde estuarium. Doktoraatsverhandeling, Katholieke Universiteit Leuven, Leuven, België

  • Cattol, D., 1962. The clay minerals. In Milner, H. B. et al. (eds), Sedimentary Petrography: Volume II – Principles and Applications (4th revised edn., Chapter 3). George Allen, Unwin Ltd., London

  • Chen, M. S., 2003. Suspended matter and flocculation in the estuarine environment. PhD Thesis. Vrije Universiteit Brussel, Belgium

  • J.E. Cloern (1999) ArticleTitleThe relative importance of light and nutrient limitation of phytoplankton growth: a simple index of coastal ecosystem sensitivity to nutrient enrichment Aquatic Ecology 33 3–16 Occurrence Handle10.1023/A:1009952125558

    Article  Google Scholar 

  • Coffin, R. B., L. A. Cifuentes, Elderidge PM., 1994. The use of stable carbon isotopes to study microbial processes in estuaries. In Lajtha, Michener (eds). Methods in Ecology: Stable Isotopes in Ecology and Environmental Science: 222–240

  • R.W. Dalrymple B.A. Zaitlin R. Boyd (1992) ArticleTitleEstuarine facies models: conceptual basis and stratigraphic implications Journal of Sedimentary Petrology 62 1130–1146

    Google Scholar 

  • L.D. De Brabandere F. Dehairs S. Van Damme N. Brion P. Meire N. Daro (2002) ArticleTitleδ15N and δ13C dynamics of suspended matter in freshwater and brackish waters of the Scheldt estuary Journal of Sea Research 48 1–15 Occurrence Handle10.1016/S1385-1101(02)00132-6 Occurrence Handle1:CAS:528:DC%2BD38XmtlKjtLg%3D

    Article  CAS  Google Scholar 

  • P. D’Hondt TG. Jacques (1982) ArticleTitleGesuspendeerde materie in de Schelde Evaluatie van een onderzoek van de ULB voor het Ministerie van Volksgezondheid Water 4 133–135

    Google Scholar 

  • Dyer K. (1994). Estuarine Sediment Transport and Deposition. Sediment Transport and Depositional Processes. K. Pye. Blackwell Scientific Publications, Oxford, 193–218

  • Edgerton, Orntner H.P., McElroy W. (1981). In situ plankton camera. Oceans Sept. 1981, 558–560

  • H.A. Einstein RB. Krone (1962) ArticleTitleExperiments to determine modes of cohesive sediment transport in salt water Journal of Geophysical Research 67 1451–1461

    Google Scholar 

  • D. Eisma (1986) ArticleTitleFlocculation and de-flocculation of suspended matter in estuaries Netherlands Journal of Sea Research 20 183–199 Occurrence Handle10.1016/0077-7579(86)90041-4

    Article  Google Scholar 

  • Eisma D. (1995). In situ measurements of suspended matter floc size and settling velocity in the estuaries of the Elbe, Schelde and Gironde. Netherlands Institute for Sea Research, Texel, The Netherlands: 1–25

  • D. Eisma T. Schuhmacher Boekel J. Vanheerwaarden H. Franken M. Laan A. Vaars F. Eijgenraam J. Kalf (1990) ArticleTitleA camera and image-analysis system for in situ observation of flocs in natural-waters Netherlands Journal of Sea Research 27 43–56 Occurrence Handle10.1016/0077-7579(90)90033-D

    Article  Google Scholar 

  • M.J. Fennessy K.R. Dyer DA. Huntley (1994) ArticleTitleSize and settling velocity distributions of flocs in the Tamar Estuary during a tidal cycle Netherlands Journal of Aquatic Ecology 28 275–282

    Google Scholar 

  • M. Fettweis D. Vanden Eynde (2003) ArticleTitleThe mud deposits and the high turbidity in the Belgian–Dutch coastal zone, southern bight of the North Sea Continental Shelf Research 23 669–691 Occurrence Handle10.1016/S0278-4343(03)00027-X

    Article  Google Scholar 

  • M. Fettweis M. Sas (1999) ArticleTitleOn the sedimentation of mud in access channels of the harbour of Antwerp Permanent International Association Navigational Congresses (PIANC) Bulletin 101 53–59

    Google Scholar 

  • M. Fettweis M. Sas J. Monbaliu (1998) ArticleTitleSeasonal, neap-spring and tidal variation of cohesive sediment concentration in the Scheldt estuary, Belgium Estuarine, Coastal and Shelf Science 47 21–36

    Google Scholar 

  • N.C. Flemming (1982) ArticleTitleMultiple regression analysis of earth movements and eustatic sea-level change in the United Kingdom in the last 9000 years Proceedings of the Geologist’s Association 93 113–125

    Google Scholar 

  • B. Fry EB. Sherr (1984) ArticleTitleδ13C measurements as indicators of carbon flow in marine and fresh water ecosystems Contributions in Marine Science 27 13–47 Occurrence Handle1:CAS:528:DyaL2MXhs1ejurs%3D

    CAS  Google Scholar 

  • Gale, S. J., P. G. Hoare, 1991. Quaternary Sediments: Petrographic Methods for the Study of Unlithified Rocks (Chapter 5.9). Belhaven Press

  • R.J. Gibbs D.M. Tshudy L. Konwar J.M. Martin (1989) ArticleTitleCoagulation and transport of sediments in the Gironde estuary Sedimentology 36 987–999

    Google Scholar 

  • L. Guézennec R. Lafite J.P. Dupont R. Meyer D. Boust (1999) ArticleTitleHydrodynamics of suspended particulate matter in the tidal freshwater zone of a macrotidal estuary (the Seine estuary, France) Estuaries 22 717–727

    Google Scholar 

  • Gullentops, F., M. Moens, A. Ringele & R. Sengier, 1976. Geologische kenmerken van de suspensie en de sedimenten. In: Nihoul, C. J. & F. Gullentops (eds.), Projekt Zee – Project Mer. Diensten v.d. eerste Minister, Programmatie van het wetenschapsbeleid, Nationaal Onderzoeksen Ontwikkelingsprogramma, leefmilieu-water, Brussel 4: 1–137.

  • J.J. Hedges W.A. Clark P.D. Quay J.E. Richey A.H. Devol U.M. Santos Particlede (1986) ArticleTitleCompositions and fluxes of particulate organic material in the Amazon River Limnology and Oceanography 31 717–738 Occurrence Handle1:CAS:528:DyaL28Xltl2iu7o%3D

    CAS  Google Scholar 

  • C. Heip N.K. Goosen P.M.J. Herman J. Kromkamp J.J. Middelburg K. Soetaert (1995) ArticleTitleProduction and consumption of biological particles in temperate tidal estuaries Oceanography and Marine Biology 33 1–149

    Google Scholar 

  • Hellings, L., 2000. Origin and fate of dissolved inorganic and particulate organic carbon in a highly polluted estuary (The Scheldt) as traced by stable isotopes. Ph.D. Thesis. Vrije Universiteit Brussel, Belgium

  • L. Hellings F. Dehairs M. Tackx E. Keppens W. Baeyens (1999) ArticleTitleOrigin and fate of organic carbon in the freshwater part of the Scheldt estuary as traced by stable carbon isotope composition Biogeochemistry 47 167–186 Occurrence Handle1:CAS:528:DyaK1MXntlSktbk%3D

    CAS  Google Scholar 

  • L. Hellings F. Dehairs S. Van Damme W. Baeyens (2001) ArticleTitleDissolved inorganic carbon in a highly polluted European estuary (the Scheldt) Limnology and Oceanography 46 1406–1414 Occurrence Handle1:CAS:528:DC%2BD3MXnsVSktbY%3D

    CAS  Google Scholar 

  • P.M.J. Herman C.H.R. Heip (1999) ArticleTitleBiogeochemistry of the MAXimum TURbidity Zone of estuaries (MATURE): some conclusions Journal of Marine Systems 22 89–104 Occurrence Handle10.1016/S0924-7963(99)00034-2

    Article  Google Scholar 

  • J.P. Jasper J.M. Hayes (1993) ArticleTitleRefined estimation of marine and terrigenous contributions to sedimentary organic carbon Global Biogeochemical Cycles 7 451–461 Occurrence Handle1:CAS:528:DyaK3sXmtlegtr4%3D

    CAS  Google Scholar 

  • J. Kromkamp J. Peene (1999) ArticleTitleEstimation of phytoplankton photosynthesis and nutrient limitation in the Eastern Scheldt estuary using variable fluorescence Aquatic Ecology 33 101–104 Occurrence Handle10.1023/A:1009900124650 Occurrence Handle1:CAS:528:DyaK1MXlsFKhs78%3D

    Article  CAS  Google Scholar 

  • J. Kromkamp J. Peene P. Rijswijk Particlevan A. Sandee N. Goosen (1995) ArticleTitleNutrients, light and primary production by phytoplankton and microphytobenthos in the eutrophic, turbid Westerschelde estuary (The Netherlands) Hydrobiologia 311 9–19

    Google Scholar 

  • M. Leermakers N. Galetti S. De Galan N. Brion W. Baeyens (2001) ArticleTitleMercury in the Southern North Sea and Scheldt estuary Marine Chemistry 75 229–248 Occurrence Handle10.1016/S0304-4203(01)00039-1 Occurrence Handle1:CAS:528:DC%2BD3MXkvVWmurw%3D

    Article  CAS  Google Scholar 

  • J.J. Middelburg J. Nieuwenhuize (1998) ArticleTitleCarbon and nitrogen stable isotopes in suspended matter and sediments from the Scheldt estuary Marine Chemistry 60 217–225 Occurrence Handle10.1016/S0304-4203(97)00104-7 Occurrence Handle1:CAS:528:DyaK1cXivVWgsLo%3D

    Article  CAS  Google Scholar 

  • T.G. Milligan (1996) ArticleTitleIn Situ particle (floc) size measurements with the Benthos 373 Plankton Silhouette Camera Journal of Sea Research 36 93–100 Occurrence Handle10.1016/S1385-1101(96)90777-7

    Article  Google Scholar 

  • K. Muylaert K. Sabbe (1996) ArticleTitleCyclotella scaldensis Spec Nov. (Bacillariophyceae), a new estuarine diatom. Nova Hedwigia 63 335–345

    Google Scholar 

  • K. Muylaert K. Sabbe W. Vyverman (2000) ArticleTitleSpatial and temporal dynamics of phytoplankton communities in a freshwater tidal estuary (Schelde, Belgium) Estuarine, Coastal and Shelf Science 50 673–687

    Google Scholar 

  • Muylaert, K., R. Van Mieghem, K. Sabbe, M. Tackx, W. Vyverman, 1999. Regulation of phytoplankton productivity and biomass in a turbid, freshwater tidal estuary (Schelde, Belgium). In K. Muylaert, Distribution and Dynamics of Protist Communities in a Freshwater Tidal Estuary. Ph.D. Thesis. University of Ghent, Faculty of Sciences, Ghent, Belgium: 119–136

  • J.C.J. Nihoul (1975) ArticleTitleEffect of tidal stress on residual circulation and mud deposition in the Southern Bight of the North Sea Review of Pure and Applied Geophysics 113 577–591 Occurrence Handle10.1007/BF01592942

    Article  Google Scholar 

  • Nihoul, J. C. J., F. C. Ronday, 1976. Modèles d’un estuaire partiellement stratifié. In Nihoul, J. C. J., F. Gullentops (eds.), Project Mer, Rapport Final, Vol. 10, Comité Interministérielle pour la Recherche Scientifique, Programmation de la Recherche Scientifique, Programme National de Développement et de Recherche Environment-Eau, Bruxelles: 71–99

  • J.C.J.F. Nihoul F. Ronday J.J. Peters A. Sterling (1978) Hydrodynamics of the Scheldt estuary J. C. J. Nihoul (Eds) Hydrodynamics of Estuaries and Fjords Elsevier Amsterdam 27–53

    Google Scholar 

  • P. Raymond J. Bauer (2001) ArticleTitleUse of 14C and 13C natural abundances for evaluating riverine estuarine and coastal DOC and POC sources and cycling: a review and synthesis Organic Geochemistry 32 469–485 Occurrence Handle10.1016/S0146-6380(00)00190-X Occurrence Handle1:CAS:528:DC%2BD3MXjslyiu74%3D

    Article  CAS  Google Scholar 

  • W. Salomons W.D. Eysink (1981) Pathways of mud and particulate trace metals from rivers to the southern North Sea S. D. Nio R. T. D. Schuttenhelm T. C. E. Weering ParticleVan (Eds) Holocene Marine Sedimentation in the North Sea Blackwell Oxford 429–450

    Google Scholar 

  • D.H. Schoellhamer (2002) ArticleTitleComparison of the basin-scale effect of dredging operations and natural estuarine processes on suspended sediment concentration Estuaries 25 488–495

    Google Scholar 

  • Smets E. (1996). Kubatuurberekeningen voor het Scheldebekken, deel 2 Resultatenbundel, tabellen en grafieken. Borgerhout, Vlaams Waterbouwkundig Laboratorium. 177 pp

  • K. Soetaert P.M.J. Herman (1995) ArticleTitleNitrogen dynamics in the Westerschelde estuary (SW Netherlands) estimated by means of the ecosystem model MOSES Hydrobiologia 311 225–246 Occurrence Handle1:CAS:528:DyaK28Xot1aguw%3D%3D

    CAS  Google Scholar 

  • K. Soetaert P. Herman J. Kromkamp (1994) ArticleTitleLiving in the twilight: estimating net phytoplankton growth in the Westerschelde estuary (The Netherlands) by means of an ecosystem model (MOSES) Journal of Plankton Research 16 1277–1301

    Google Scholar 

  • Taverniers E. (2000). Zeescheldebekken: de afvoer van de Schelde in 1999. Ministerie van de Vlaamse Gemeenschap AWZ Afdeling Maritieme Schelde, Antwerpen

  • S. Damme ParticleVan B. Winder ParticleDe T. Ysebaert P. Meire (2001) ArticleTitleHet ’bijzondere’ van de Schelde: de abiotiek van het Schelde-estuarium De Levende Natuur 102 37–39

    Google Scholar 

  • G.T.M. Eck ParticleVan N. Pauw ParticleDe M. Langenbergh ParticleVan G. Verreet (1991) ArticleTitleEmissies, gehalten, gedrag en effecten van (micro)verontreiningingen in het stroomgebied van de Schelde en het Schelde-estuarium Water 60 84–99

    Google Scholar 

  • Van Leussen W. (1994). Estuarine macroflocs and their role in fine-grained sediment transport. Ph.D. Thesis. Universiteit van Utrecht, the Netherlands

  • Van Leussen, W., 1997. The Kolmogorov microscale as a limiting value for the floc sizes of suspended fine grained sediments in estuaries. In Burt, N., R. Parker, J. Watts (eds), Cohesive Sediment. Wiley, Sons: 45–62

  • Van Mierlo C.J. (1899). La carte lithologique de la partie mériodionale de la Mer du Nord. Bulletin de la Société Belge de Géologie, de Paléontologie et d’Hydrologie 13, 2° série(3): 219

  • J.C.M. Van Spaendonk J.C. Kromkamp P.R.M. De Visscher (1993) ArticleTitlePrimary production of phytoplankton in a turbid coastal plain estuary, the Westerschelde (The Netherlands) Netherlands Journal of Sea Research 31 267–279 Occurrence Handle10.1016/0077-7579(93)90027-P

    Article  Google Scholar 

  • P.A.J. Verlaan M. Donze P. Kuik (1998) ArticleTitleMarine vs fluvial suspended matter in the Scheldt Estuary Estuarine, Coastal and Shelf Science 47 837–883

    Google Scholar 

  • Wartel S. (1972). Sedimentologisch onderzoek van de opbouw van het Schelde-estuarium. Doctorate’s Thesis. Leuven, KUL. Vol. III

  • S. Wartel (1973) ArticleTitleVariations in concentration of suspended matter in the Scheldt estuary Bulletin Institut royal des Sciences naturelles de Belgique Sciences de la Terre 49 1–11

    Google Scholar 

  • Wartel S., Francken F. (1998). Sedimenttransport en sedimentatieprocessen in de Schelde tussen Zandvliet en Gent. Brussel, Koninklijk Belgisch instituut voor Natuurwetenschappen. 42. pp

  • Wartel, S., F. Francken, P. Schotte, C. Salinas, 1998. Characterizing of suspended and bottom sediments in the Scheld estuary between Zandvliet and Gent using multivariate extension of the entropy concept. 1° Interdisciplinary Symposium on Estuarine Processes, University of Al Garve, Faro, Portugal

  • Wartel, S., E. Keppens, P. Nielsen, F. Dehairs, P. Van Den Winkel, L. Cornand, 1993. Bepaling van de verhouding marien en fluviatiel slib in de Beneden Zeeschelde. Ministerie van de Vlaamse Gemeenschap, Departement Leefmilieu en Infrastructuur, Administratie Waterinfrastructuur en Zeewezen, Antwerpse Zeehavendiensten: 48

  • M.R. West A.Y.A. Sangodyin (1991) ArticleTitleDepth-mean tidal current and sediment concentration relationships in three partially mixed estuaries Estuarine, Coastal and Shelf Science 32 141–159

    Google Scholar 

  • Winterwerp, J. C., Z. B. Wang, M. J. F. Stive, A. Arends, C. Jeuken, C. Kuijper & P. M. C. Thoolen, 2001. A new morphological schematization of the Western Scheldt Estuary, The Netherlands. 2nd IAHR Symposium on River Coastal and Estuarine Morphodynamics, Obihiro, Japan: 525–533

  • E. Wolanski B. King D. Galloway (1995) ArticleTitleDynamics of the turbidity maximum in the Fly river estuary, Papua New Guinea Estuarine, Coastal and Shelf Science 40 321–338

    Google Scholar 

  • R. Wollast (1988) The Scheldt estuary W. Salomons B. L. Bayne E. K. Duursma U. Förstner (Eds) Pollution of the North Sea Springer Verlag Berlin, Heidelberg, New York 183–193

    Google Scholar 

  • Wollast R., Peters J.J. (1983). Transfer of materials in estuarine zones. Review of water quality and transport of materials in coastal and estuarine waters. P. J. B. Copenhagen, International Council for the exploration of the sea. Cooperative research report no 118: 200–216

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  1. Royal Belgian Institute of Natural Sciences, Marine Ecosystem Management, Rue Vautier 29, B-1000, Brussels, Belgium

    Margaret S. Chen & Stanislas Wartel

  2. National Institute for Coastal and Marine Management, P.O. Box 8039, 4330, EA Middelburg, The Netherlands

    Bert Van Eck & Dirk Van Maldegem

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  1. Margaret S. Chen
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Chen, M.S., Wartel, S., Eck, B.V. et al. Suspended matter in the Scheldt estuary. Hydrobiologia 540, 79–104 (2005). https://doi.org/10.1007/s10750-004-7122-y

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