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dc.creatorRíos,Felipe
dc.creatorCisternas,Marco
dc.creatorLe Roux,jacobus
dc.creatorCorrêa,Iran
dc.date2002-01-01
dc.date.accessioned2019-11-14T12:55:02Z
dc.date.available2019-11-14T12:55:02Z
dc.identifierhttps://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0717-71782002000100001
dc.identifier.urihttps://revistaschilenas.uchile.cl/handle/2250/116918
dc.descriptionBottom sediment samples were collected in June and December 1997 at 166 stations on a rectangular grid in a small port (Lirquén Harbor, BíoBío Region, Central Southern Chile) facing siltation problems with a view to determining local seasonal sediment transport pathways through the application of three different methodologies based on grain-size trends. Measured winds and near-bottom currents together with hindcast wave allowed to establishing the influence of the prevailing meteorological and hydrodynamic conditions on local sediment circulation. The results suggest that transport of deep and shallow water sediments occur rarely under high-energy conditions. The current data suggest that tidal asymmetry would be an important agent of sediment transport in Lirquen Harbor. The sediment transport pathways inferred from grain-size trends are compared with the measured water circulation of the study area and sediment dispersal patterns on aerial photographs. The results yielded by the grain-size trend methodologies of <A HREF="#gao92">Gao-Collins (1992)</A> and <A HREF="#le94b">Le Roux (1994b)</A> indicate a possible seasonal variation in transport pathways agreeing with the prevailing meteo-hydrodynamic conditions, whereas the <A HREF="#mcl85">McLaren-Bowles (1985)</A> approach does not show a significant difference. It is suggested that the latter methodology may represent transport on a spatial macroscale as opposed to the mesoscale patterns yielded by the other two techniques. Based on the results of the three grain-size trend methodologies, the observed current and wind data, the hindcast wave data and aerial photographs a conceptual model of net annual sediment transport is proposed for Lirquén Harbour
dc.formattext/html
dc.languageen
dc.publisherEscuela de Ciencias del Mar. Pontificia Universidad Católica de Valparaíso
dc.relation10.4067/S0717-71782002000100001
dc.rightsinfo:eu-repo/semantics/openAccess
dc.sourceInvestigaciones marinas v.30 n.1 2002
dc.subjectsediment transport pathways
dc.subjectgrain-size trends
dc.subjectLirquén Harbor
dc.subjectsouthern Chile
dc.titleSeasonal sediment transport pathways in Lirquen Harbor, Chile, as inferred from grain-size trends


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