Suspended sediment load in northwestern South America (Colombia): A new view on variability and fluxes into the Caribbean Sea

Monthly averaged suspended sediment load data from seven rivers in northern Colombia (Caribbean alluvial plain) draining into the Caribbean Sea were analyzed to quantify magnitudes, estimate long-term trends, and evaluate variability patterns of suspended sediment load. Collectively these rivers del...

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Autores:
Restrepo, J. C
Orejarena R, Andres F
Torregroza Espinosa, Ana Carolina
Tipo de recurso:
Article of journal
Fecha de publicación:
2017
Institución:
Corporación Universidad de la Costa
Repositorio:
REDICUC - Repositorio CUC
Idioma:
OAI Identifier:
oai:repositorio.cuc.edu.co:11323/946
Acceso en línea:
https://hdl.handle.net/11323/946
https://doi.org/10.1016/j.jsames.2017.10.005
https://repositorio.cuc.edu.co/
Palabra clave:
Suspended sediment load
Caribbean sea
Hydrologic variability
Wavelet spectral analyses
Rights
openAccess
License
Atribución – No comercial – Compartir igual
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dc.title.eng.fl_str_mv Suspended sediment load in northwestern South America (Colombia): A new view on variability and fluxes into the Caribbean Sea
title Suspended sediment load in northwestern South America (Colombia): A new view on variability and fluxes into the Caribbean Sea
spellingShingle Suspended sediment load in northwestern South America (Colombia): A new view on variability and fluxes into the Caribbean Sea
Suspended sediment load
Caribbean sea
Hydrologic variability
Wavelet spectral analyses
title_short Suspended sediment load in northwestern South America (Colombia): A new view on variability and fluxes into the Caribbean Sea
title_full Suspended sediment load in northwestern South America (Colombia): A new view on variability and fluxes into the Caribbean Sea
title_fullStr Suspended sediment load in northwestern South America (Colombia): A new view on variability and fluxes into the Caribbean Sea
title_full_unstemmed Suspended sediment load in northwestern South America (Colombia): A new view on variability and fluxes into the Caribbean Sea
title_sort Suspended sediment load in northwestern South America (Colombia): A new view on variability and fluxes into the Caribbean Sea
dc.creator.fl_str_mv Restrepo, J. C
Orejarena R, Andres F
Torregroza Espinosa, Ana Carolina
dc.contributor.author.spa.fl_str_mv Restrepo, J. C
Orejarena R, Andres F
Torregroza Espinosa, Ana Carolina
dc.subject.eng.fl_str_mv Suspended sediment load
Caribbean sea
Hydrologic variability
Wavelet spectral analyses
topic Suspended sediment load
Caribbean sea
Hydrologic variability
Wavelet spectral analyses
description Monthly averaged suspended sediment load data from seven rivers in northern Colombia (Caribbean alluvial plain) draining into the Caribbean Sea were analyzed to quantify magnitudes, estimate long-term trends, and evaluate variability patterns of suspended sediment load. Collectively these rivers deliver an average of around 146.3 × 106 t yr−1 of suspended sediments to the Colombian Caribbean coast. The largest sediment supply is provided by the Magdalena River, with a mean suspended sediment load of 142.6 × 106 t yr−1, or 38% of the total fluvial discharge estimated for the whole Caribbean littoral zone. Between 2000 and 2010, the annual suspended sediment load of these rivers increased by as much as 36%. Wavelet spectral analyses identified periods of intense variability between 1987-1990 and 1994–2002, where major oscillation processes appeared simultaneously. The semi-annual, annual and quasi-decadal bands are the main factors controlling suspended sediment load variability in fluvial systems, whereas the quasi-biennial and interannual bands constitute second-order sources of variability. The climatic and oceanographic drivers of the oscillations identified through wavelet spectral analyses define a signal of medium-long-term variability for the suspended sediment load, while the physiographic and environmental characteristics of the basins determine their ability to magnify, attenuate or modify this signal.
publishDate 2017
dc.date.issued.none.fl_str_mv 2017-10-05
dc.date.accessioned.none.fl_str_mv 2018-11-14T14:29:32Z
dc.date.available.none.fl_str_mv 2018-11-14T14:29:32Z
dc.type.spa.fl_str_mv Artículo de revista
dc.type.coar.fl_str_mv http://purl.org/coar/resource_type/c_2df8fbb1
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dc.type.content.spa.fl_str_mv Text
dc.type.driver.spa.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.issn.spa.fl_str_mv 0895-9811
dc.identifier.uri.spa.fl_str_mv https://hdl.handle.net/11323/946
dc.identifier.doi.spa.fl_str_mv https://doi.org/10.1016/j.jsames.2017.10.005
dc.identifier.instname.spa.fl_str_mv Corporación Universidad de la Costa
dc.identifier.reponame.spa.fl_str_mv REDICUC - Repositorio CUC
dc.identifier.repourl.spa.fl_str_mv https://repositorio.cuc.edu.co/
identifier_str_mv 0895-9811
Corporación Universidad de la Costa
REDICUC - Repositorio CUC
url https://hdl.handle.net/11323/946
https://doi.org/10.1016/j.jsames.2017.10.005
https://repositorio.cuc.edu.co/
dc.rights.spa.fl_str_mv Atribución – No comercial – Compartir igual
dc.rights.accessrights.spa.fl_str_mv info:eu-repo/semantics/openAccess
dc.rights.coar.spa.fl_str_mv http://purl.org/coar/access_right/c_abf2
rights_invalid_str_mv Atribución – No comercial – Compartir igual
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.publisher.spa.fl_str_mv Journal of South American Earth Sciences
institution Corporación Universidad de la Costa
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spelling Restrepo, J. COrejarena R, Andres FTorregroza Espinosa, Ana Carolina2018-11-14T14:29:32Z2018-11-14T14:29:32Z2017-10-050895-9811https://hdl.handle.net/11323/946https://doi.org/10.1016/j.jsames.2017.10.005Corporación Universidad de la CostaREDICUC - Repositorio CUChttps://repositorio.cuc.edu.co/Monthly averaged suspended sediment load data from seven rivers in northern Colombia (Caribbean alluvial plain) draining into the Caribbean Sea were analyzed to quantify magnitudes, estimate long-term trends, and evaluate variability patterns of suspended sediment load. Collectively these rivers deliver an average of around 146.3 × 106 t yr−1 of suspended sediments to the Colombian Caribbean coast. The largest sediment supply is provided by the Magdalena River, with a mean suspended sediment load of 142.6 × 106 t yr−1, or 38% of the total fluvial discharge estimated for the whole Caribbean littoral zone. Between 2000 and 2010, the annual suspended sediment load of these rivers increased by as much as 36%. Wavelet spectral analyses identified periods of intense variability between 1987-1990 and 1994–2002, where major oscillation processes appeared simultaneously. The semi-annual, annual and quasi-decadal bands are the main factors controlling suspended sediment load variability in fluvial systems, whereas the quasi-biennial and interannual bands constitute second-order sources of variability. The climatic and oceanographic drivers of the oscillations identified through wavelet spectral analyses define a signal of medium-long-term variability for the suspended sediment load, while the physiographic and environmental characteristics of the basins determine their ability to magnify, attenuate or modify this signal.Restrepo, J. 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