Sediment dynamics and associated heavy metals in small river- and wave-dominated inner shelf (Barcelona city, Nw Mediterranean)

Sediment dynamics and associated heavy metals in small river- and wave-dominated inner shelf (Barcelona city, Nw Mediterranean)

Memòria de tesi doctoral presentada per Laura López Fernández per optar al grau de Doctora en Ciències del Mar per la Universitat Politècnica de Catalunya (UPC), realitzada sota la direcció del Dr. Jorge Guillén Aranda y del Dr. Albert Palanques Monteys de l'Institut de Ciències del Mar (ICM-CSIC).-- 105 pages

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Main Author: López Fernández, Laura
Other Authors: Guillén, Jorge
Format: tesis doctoral biblioteca
Published: Universidad Politécnica de Cataluña 2013
Online Access:http://hdl.handle.net/10261/100323
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spelling dig-icm-es-10261-1003232018-12-21T13:33:18Z Sediment dynamics and associated heavy metals in small river- and wave-dominated inner shelf (Barcelona city, Nw Mediterranean) López Fernández, Laura Guillén, Jorge Palanques, Albert Memòria de tesi doctoral presentada per Laura López Fernández per optar al grau de Doctora en Ciències del Mar per la Universitat Politècnica de Catalunya (UPC), realitzada sota la direcció del Dr. Jorge Guillén Aranda y del Dr. Albert Palanques Monteys de l'Institut de Ciències del Mar (ICM-CSIC).-- 105 pages Wave storms and river inputs have been found to be the dominant forcing mechanism of sediment transport in continental shelves dominated by medium to large rivers around the world (e.g. Drake and Cacchione, 1985; Sherwood et al., 1994; Ogston and Stemberg, 1999; Traykovski et al., 2000; Wadman and McNinch, 2008) and in the northwestern Mediterranean Sea (Jiménez et al., 1999; Puig et al., 2001; Guillén et al., 2002, 2006; Palanques et al., 2002, 2011; Ferré et al., 2005; Roussiez et al., 2005; Ulses et al., 2008). However, the contribution of “small” Mediterranean river systems in fine-grained sediment dynamics is not well known. Flood and storm events redistribute not only sediment but also all the associated matter as well, such a heavy metals, which are indicators of the impact of industrial and urban activities. For these reasons, the present thesis project involves studying the dynamics of sediments and associated heavy metals across the inner continental shelf off the Besòs River (Barcelona), and in particular determining the effect of floods and storms in a littoral system affected by industrial and urban activities. To this end, several oceanographic surveys were carried out between 20 and 40 m water depths in the Barcelona continental shelf to obtain a variety of data: to register vertical hydrographical profiles (temperature, salinity and turbidity); to record time series of physical parameters (currents, salinity, temperature, turbidity and seabed variation) by deploying oceanographic equipment; and to take sediment samples (short cores and Van Veen grabs) and suspended and downward particulate matter from water samples and sediment traps for further sedimentological and geochemical analysis. The time period of the present study comprised three seasons, from autumn 2007 to spring 2008, which showed distinct features between them. The purpose of section 3 was to describe the main hydrographic and hydrodynamic conditions during the study period to support the interpretation of sediment transport processes. Three different periods in terms of storm and river activity matched the natural seasons of the year: The period comprised between end of September 2007 and December 2007 (autumn) was characterized by an intense frequency of northeastern-eastern storms mostly coupled with high but short river discharges and a convergence of the across-shelf current between 20 m and 30 m water depths; between January and early March 2008 (winter), the wave and river activity and frequency were reduced significantly with offshore currents dominating the across component; and finally, from March to mid June 2008 (spring), specially between May and June 2008, river discharges lasted more than one month and occurred under low wave energy conditions or in conjunction with S-SE and SW wave storms La presente tesis ha sido llevada a cabo gracias al proyecto SEDMET (CMTM2006-06919) financiado por el Ministerio de Economía y Competitividad Peer Reviewed 2014-07-22T08:38:06Z 2014-07-22T08:38:06Z 2013 2014-07-22T08:38:06Z tesis doctoral http://purl.org/coar/resource_type/c_db06 http://hdl.handle.net/10261/100323 open Universidad Politécnica de Cataluña
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
description Memòria de tesi doctoral presentada per Laura López Fernández per optar al grau de Doctora en Ciències del Mar per la Universitat Politècnica de Catalunya (UPC), realitzada sota la direcció del Dr. Jorge Guillén Aranda y del Dr. Albert Palanques Monteys de l'Institut de Ciències del Mar (ICM-CSIC).-- 105 pages
author2 Guillén, Jorge
author_facet Guillén, Jorge
López Fernández, Laura
format tesis doctoral
author López Fernández, Laura
spellingShingle López Fernández, Laura
Sediment dynamics and associated heavy metals in small river- and wave-dominated inner shelf (Barcelona city, Nw Mediterranean)
author_sort López Fernández, Laura
title Sediment dynamics and associated heavy metals in small river- and wave-dominated inner shelf (Barcelona city, Nw Mediterranean)
title_short Sediment dynamics and associated heavy metals in small river- and wave-dominated inner shelf (Barcelona city, Nw Mediterranean)
title_full Sediment dynamics and associated heavy metals in small river- and wave-dominated inner shelf (Barcelona city, Nw Mediterranean)
title_fullStr Sediment dynamics and associated heavy metals in small river- and wave-dominated inner shelf (Barcelona city, Nw Mediterranean)
title_full_unstemmed Sediment dynamics and associated heavy metals in small river- and wave-dominated inner shelf (Barcelona city, Nw Mediterranean)
title_sort sediment dynamics and associated heavy metals in small river- and wave-dominated inner shelf (barcelona city, nw mediterranean)
publisher Universidad Politécnica de Cataluña
publishDate 2013
url http://hdl.handle.net/10261/100323
work_keys_str_mv AT lopezfernandezlaura sedimentdynamicsandassociatedheavymetalsinsmallriverandwavedominatedinnershelfbarcelonacitynwmediterranean
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