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Suspended sediment load in northwestern South America (Colombia): A new view on variability and fluxes into the Caribbean Sea
dc.contributor.author | Restrepo, J. C | spa |
dc.contributor.author | Orejarena R, Andres F | spa |
dc.contributor.author | Torregroza Espinosa, Ana Carolina | spa |
dc.date.accessioned | 2018-11-14T14:29:32Z | |
dc.date.available | 2018-11-14T14:29:32Z | |
dc.date.issued | 2017-10-05 | |
dc.identifier.issn | 0895-9811 | spa |
dc.identifier.uri | http://hdl.handle.net/11323/946 | spa |
dc.description.abstract | 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. | spa |
dc.publisher | Journal of South American Earth Sciences | spa |
dc.rights | Atribución – No comercial – Compartir igual | spa |
dc.subject | Suspended sediment load | eng |
dc.subject | Caribbean sea | eng |
dc.subject | Hydrologic variability | eng |
dc.subject | Wavelet spectral analyses | eng |
dc.title | Suspended sediment load in northwestern South America (Colombia): A new view on variability and fluxes into the Caribbean Sea | eng |
dc.type | Artículo de revista | spa |
dc.rights.accessrights | info:eu-repo/semantics/openAccess | spa |
dc.identifier.doi | https://doi.org/10.1016/j.jsames.2017.10.005 | spa |
dc.identifier.instname | Corporación Universidad de la Costa | spa |
dc.identifier.reponame | REDICUC - Repositorio CUC | spa |
dc.identifier.repourl | https://repositorio.cuc.edu.co/ | spa |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | spa |
dc.type.content | Text | spa |
dc.type.driver | info:eu-repo/semantics/article | spa |
dc.type.redcol | http://purl.org/redcol/resource_type/ART | spa |
dc.type.version | info:eu-repo/semantics/acceptedVersion | spa |
dc.type.coarversion | http://purl.org/coar/version/c_ab4af688f83e57aa | spa |
dc.rights.coar | http://purl.org/coar/access_right/c_abf2 | spa |
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