title: Numerical assessment of the dispersion of overspilled sediment from a dredge barge and its sensitivity to various parameters.
abstract: Marine dredging operations are not uncommon in coastal waters since they are necessary for several beneficial uses, such as harbour maintenance, beach nourishment or removal/capping of pollutants, amongst others. They also constitute a significant risk for the environment, changing its physical, chemical and biological characteristics, as evidenced by many authors. In this study, two numerical models are used to simulate the dispersion pattern of fine suspended sediment spilled from a dredge barge, considering different hydrodynamic scenarios, particle sizes and dredging tracks in a mesotidal environment. The results show that, in this particular case, the currents (largely induced by the tide) are the main responsible for the final disposition of the settled particles, being the other variables of secondary importance.
authors.affiliation: Centre Internacional d'Investigació dels Recursos Costaners (CIIRC), c/Jordi Girona 1-3, Mòdul D1, 08034 Barcelona, Spain. Electronic address: mmestresridge@gmail.com.
authors.forename: Marc
authors.initials: M
authors.lastname: Mestres
authors.affiliation: Centre Internacional d'Investigació dels Recursos Costaners (CIIRC), c/Jordi Girona 1-3, Mòdul D1, 08034 Barcelona, Spain; Laboratori d'Enginyeria Marítima (LIM-UPC), Universitat Politècnica de Catalunya, c/Jordi Girona 1-3, Mòdul D1, 08034 Barcelona, Spain.
authors.forename: Joan Pau
authors.initials: JP
authors.lastname: Sierra
authors.affiliation: Centre Internacional d'Investigació dels Recursos Costaners (CIIRC), c/Jordi Girona 1-3, Mòdul D1, 08034 Barcelona, Spain; Laboratori d'Enginyeria Marítima (LIM-UPC), Universitat Politècnica de Catalunya, c/Jordi Girona 1-3, Mòdul D1, 08034 Barcelona, Spain.
authors.forename: César
authors.initials: C
authors.lastname: Mösso
authors.affiliation: Centre Internacional d'Investigació dels Recursos Costaners (CIIRC), c/Jordi Girona 1-3, Mòdul D1, 08034 Barcelona, Spain; Laboratori d'Enginyeria Marítima (LIM-UPC), Universitat Politècnica de Catalunya, c/Jordi Girona 1-3, Mòdul D1, 08034 Barcelona, Spain.
authors.forename: Agustín
authors.initials: A
authors.lastname: Sánchez-Arcilla
authors.affiliation: Autoridad Portuaria de Bilbao, Campo Volantín, 37, 48007 Bilbao, Spain.
authors.forename: Mario
authors.initials: M
authors.lastname: Hernáez
authors.affiliation: Autoridad Portuaria de Bilbao, Campo Volantín, 37, 48007 Bilbao, Spain.
authors.forename: Jorge
authors.initials: J
authors.lastname: Morales
mesh_terms: D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000032:analysis*; D008956:Models, Chemical; D012767:Ships; D014873:Water Pollutants / Q000032:analysis*; D014876:Water Pollution / Q000706:statistics & numerical data
chemical_list: D014873:Water Pollutants
keywords: Bilbao; Dredging; Mesotidal estuary; Numerical modelling; Sediment