Catchment and climatic influences on spatio-temporal variations in suspended sediment transport dynamics in rivers

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dc.contributor.authorShin, Jae hun
dc.contributor.authorGrabowski, Robert C.
dc.contributor.authorHolman, Ian P.
dc.date.accessioned2023-08-30T12:46:44Z
dc.date.available2023-08-30T12:46:44Z
dc.date.issued2023-08-04
dc.description.abstractSuspended sediment concentration (SSC) is an important attribute for water resources management. However, the interactions between climate and catchment characteristics that control the temporal variability of SSC in rivers are not fully resolved. The study aim is to evaluate how these variables influence spatial and seasonal variations in SSC dynamics at a continental scale. Daily SSC (mg/l) and site attribute data from 120 sites (USA) with minimum 10 years of record (1971–2000) were analysed. New indicators of SSC dynamics (magnitude and frequency) were developed and applied annually and seasonally. Geographically weighted regression (GWR) models were created for each ordinary least squares (OLS) regression model, and GWR coefficients were analysed by ecoregion. Land cover, rainfall and erosivity, baseflow index and soil texture were the most common variables in the OLS models. GWR coefficients displayed significant variation across the continent. Agricultural cover was positively associated with low frequency SSC events, while urban and forest cover predicted higher frequency events, except in the desert areas. PPT30 was generally a negative predictor for SSC magnitude, except the marine west coasts forests. These findings on catchment and climate controls on SSC will support future predictive models of SS transport dynamics.en_UK
dc.identifier.citationShin J, Grabowski RC, Holman IP. (2023) Catchment and climatic influences on spatio-temporal variations in suspended sediment transport dynamics in rivers, Hydrology Research, Volume 54, Issue 8, August 2023, pp. 901-923en_UK
dc.identifier.issn1998-9563
dc.identifier.urihttps://doi.org/10.2166/nh.2023.127
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/20154
dc.language.isoenen_UK
dc.publisherIWA Publishingen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectcatchmenten_UK
dc.subjectclimateen_UK
dc.subjectland coveren_UK
dc.subjectland useen_UK
dc.subjectsediment yielden_UK
dc.subjectsuspended sediment concentrationsen_UK
dc.titleCatchment and climatic influences on spatio-temporal variations in suspended sediment transport dynamics in riversen_UK
dc.typeArticleen_UK

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