{"refrec":{"BRefID":13577,"RR":"<b>Van Lancker, V.R.M.</b> (1999). Sediment and morphodynamics of a siliciclastic near coastal area, in relation to hydrodynamical and meteorological conditions: Belgian Continental Shelf = De sediment- en morfodynamiek van de kustnabije zone in relatie tot de impact van hydrodynamische en meteorologische factoren in een silicoclastische omgeving, Belgisch continentaal plat. PhD Thesis. University of Gent: Gent.  194 pp.","BEntID":13577,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":". PhD Thesis. University of Gent: Gent.  194 pp.","DocTypID":5,"DocType":"Book/Monograph","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Van Lancker, V.R.M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Van Lancker, V.R.M.","Englishabstract":"The Belgian near coastal       area is characterised by shallow marine sandbanks lying more or less       parallel to the shoreline. Research activities were focussed on the       sediment- and morphodynamics of the Stroombank, the Nieuwpoort Bank and       the Baland Bank, supplemented by a comparative investigation along the       interaction zone with the Flemish Bank system.</font></p>       <p ALIGN=\"left\" style=\"margin-left: 2\"><font face=\"Arial\" size=\"2\">To study the       sedimentological and morphological behaviour of this macrotidal       environment (-5 to -15 m MLLWS) an integrated research strategy was set up       covering different spatial as well as temporal scales.</font></p>       <p ALIGN=\"left\" style=\"margin-left: 2\"><font face=\"Arial\" size=\"2\">Sediment transport       calculations showed that the tidal currents are generally competent enough       to resuspend the in-situ sediments.</font></p>       <p ALIGN=\"left\" style=\"margin-left: 2\"><font face=\"Arial\" size=\"2\">The surficial sediments of       the near coastal zone are mainly characterised by fine to very fine sands.       Still, medium sands occur in the areas witnessing an intense       tide-topography interaction. Striking is the correlation with the presence       of bedforms. Deeper than roughly -6 m the surficial sediments are most       likely enriched with mud.</font></p>       <p ALIGN=\"left\" style=\"margin-left: 2\"><font face=\"Arial\" size=\"2\">An interactive model is       proposed whereby the transport of sediment is mainly dependent on the       swale configuration. Especially when the tidal currents are funnelled,       sandy deposits are being washed out and stored along the slopes of the       banks. Part of the accumulated sediments is subsequently winnowed out and       transported upslope the sandbanks by the combined action of currents and       waves. In time, the above mentioned observations and interpretations can       be confirmed.</font></p>       <p ALIGN=\"left\" style=\"margin-left: 2\"><font face=\"Arial\" size=\"2\">From the chronosequential       measurements an indication could be given of the vulnerability of the       coastal system. It can be stated that there is a clear relation between       the observed morphological changes and the ruling hydro-meteorological       conditions. Generally the lowest sediment budgets correspond with summer       and autumn conditions, whilst the winter months witness the highest       sediment volumes and are characterised by an abundance of fine sandy       sediments. Sediment transport is most intense when the direction of       storminess parallels with the configuration of the swales. From the       observations, it can also be deduced that the duration of stormy       conditions is more important than the strength. Moreover, the sedimentary       pattern in the near coastal area is characterised by a quick recovery       after stormy periods.</font></p>       <p ALIGN=\"left\" style=\"margin-left: 2\"><font face=\"Arial\" size=\"2\">From the spatial and       temporal differentiation, the near coastal area can be regarded a self       regulating sediment transport system dominated by longshore sediment       fluxes.</font></p>       <p ALIGN=\"left\" style=\"margin-left: 2\"><font face=\"Arial\" size=\"2\">The origin of the Coastal Banks is likely       constrained to a time period having hydrodynamic characteristics       comparable to the nowadays situation</font></p>","AbstractOtherLang":"De Belgische kustnabije       zone wordt gekenmerkt door een aantal zandbanken die nagenoeg parallel aan       de kust verlopen. In het kader van deze studie werd de sediment- en       morfodynamiek bestudeerd van de Stroombank, de Nieuwpoort Bank en de       Baland Bank en werd een vergelijkend onderzoek verricht langsheen de       zuidelijke rand van de Vlaamse Banken.</font></p>       <p ALIGN=\"left\"><font face=\"Arial\" size=\"2\">Teneinde het       sedimentologisch en morfologisch gedrag van een macrotidaal ondiep-water       kustsysteem (-5 tot -15 m GLLWS) te bestuderen, werd een geïntegreerde       onderzoeksmethodologie opgesteld en dit voor verschillende ruimte- als       tijdschalen.</font></p>       <p ALIGN=\"left\"><font face=\"Arial\" size=\"2\">Sedimenttransportberekeningen       toonden aan dat de getijdestromingen competent genoeg zijn om het <i>in-situ</i>       sediment in beweging en in suspensie te brengen.</font></p>       <p ALIGN=\"left\"><font face=\"Arial\" size=\"2\">Uit de sedimentaire opbouw       van het gebied bleek dat de oppervlakkige sedimenten vooral gekenmerkt       zijn door fijn tot heel fijne zanden. Opmerkelijk is de correlatie van       grovere zanden (> 250 µm) met het voorkomen van grotere       bodemstructuren. Sedimentatie van slib kan verwacht worden dieper dan       ruwweg -6 m.</font></p>       <p ALIGN=\"left\"><font face=\"Arial\" size=\"2\">Een interactief model wordt       voorgesteld ter aanduiding van het behoudsmechanisme van het zandbanken       - geulen systeem. Hieruit bleek dat de grovere sedimentfracties zich       bevinden aan de basis van de zandbanken resulterend uit een       aanrijkingsproces vanuit de geulen. Deze sedimentbuffer wordt hydraulisch       gesorteerd en geleidelijk hellingopwaarts getransporteerd door de       gecombineerde actie van getij en golven. Deze processen bleken geldig       onder veranderende weersomstandigheden.</font></p>       <p ALIGN=\"left\"><font face=\"Arial\" size=\"2\">Windaangedreven stroming is       belangrijk in de kustzone. Algemeen gesteld komen de laagste       sedimentvolumes overeen met zomer en herfst condities, terwijl de       wintermaanden het hoogste volume vertonen en gekenmerkt zijn door een       aanrijking van fijnere zandige sedimenten. Versterking van de       getijdestroming door meteorologische invloeden in een zelfde richting       verhoogt aanzienlijk het sedimenttransport. Uit de temporele metingen       bleek tevens dat de duur en de uniformiteit van de meteorologische       factoren primeert boven hun sterkte. Het gebied kent een vlug herstel.</font></p>       <p ALIGN=\"left\"><font face=\"Arial\" size=\"2\">Uit de spatiale en       temporele differentiatie van het kustsysteem blijkt dat het       sedimenttransport langsheen goed afgelijnde transportpaden verloopt. De       nabije kustzone is dan ook aanzien als een auto-regulerend       sedimenttransportsysteem waarbij een transversaal transport ondergeschikt       is aan het kustlangse transport.</font></p>       <p ALIGN=\"left\"><font face=\"Arial\" size=\"2\">Het lijkt aannemelijk dat de kustbanken       gevormd zijn onder een hydraulisch regime gelijkaardig aan het hedendaags       systeem.</font></p>","BibLvlCode":"M","StandardTitle":"Sediment and morphodynamics of a siliciclastic near coastal area, in relation to hydrodynamical and meteorological conditions: Belgian Continental Shelf = De sediment- en morfodynamiek van de kustnabije zone in relatie tot de impact van hydrodynamische en meteorologische factoren in een silicoclastische omgeving, Belgisch continentaal plat","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 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