Quantifying the sources and the transit times of sediment using fallout radionuclides (7Be, 137Cs, 210Pbxs) in contrasted cultivated catchments across the world

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dc.contributor.authorEvrard, Olivier
dc.contributor.authorLe Gall, Marion
dc.contributor.authorLaceby, J. Patrick
dc.contributor.authorFoucher, Anthony
dc.contributor.authorLefèvre, Irène
dc.contributor.authorSalvador-Blanes, Sébastien
dc.contributor.authorMorera Julca, Sergio Byron
dc.contributor.authorRibolzi, Olivier
dc.date.accessioned2018-08-02T15:46:35Z
dc.date.available2018-08-02T15:46:35Z
dc.date.issued2017-12-15
dc.descriptionPresentado en: American Geophysical Union, Fall Meeting 2017. Section: Earth and Planetary Surface Processes, New Orleans 11-15 December 2017. Abstract #EP53E-03 -Emerging Technologies and Advances in Identifying Catchment Sediment Sources.
dc.description.abstractSoil erosion and fine sediment supply to rivers are exacerbated in intensively cultivated catchments. Information on the sediment sources and transit times in rivers is required to improve our understanding of these processes and to guide the implementation of effective conservation measures. Accordingly, natural (7Be, 210Pb) and artificial (137Cs) fallout radionuclide concentrations were measured in overland flow and suspended sediment collected during the erosive season in contrasted cultivated catchments. In Laos, samples were collected in a steep catchment (Houay Pano, 12 km²) covered with cropland and teak plantations during the first flood of the monsoon in 2014. Cropland surface sources dominated the supply of sediment at the upstream sampling location (55%), whereas subsurface sources (channel, landslides) contributed the majority of material at the outlet (60%). Furthermore, the material exported from the catchment mainly consisted of re-suspended sediment.es_ES
dc.formatapplication/pdfes_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/2186
dc.language.isoenges_ES
dc.publisherAmerican Geophysical Uniones_ES
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectSediment transportes_ES
dc.subjectMonsoonses_ES
dc.subjectFlood routeses_ES
dc.subjectSuspended sedimentses_ES
dc.subjectSoil erosiones_ES
dc.subjectHydrologyes_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.11es_ES
dc.titleQuantifying the sources and the transit times of sediment using fallout radionuclides (7Be, 137Cs, 210Pbxs) in contrasted cultivated catchments across the worldes_ES
dc.typeinfo:eu-repo/semantics/conferenceObjectes_ES

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