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New Sediment Yield Models for Mountainous Greek Catchments

Author(s): Sotirios-Theofanis Karalis; Efthymios Karymbalis; Nikolaos Mamasis

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Abstract: In this study, we explore the controls over specific suspended sediment yield in 11 stations situated along six major rivers of Western and Northern Greece (Arachthos, Achelooos, Evinos, Aoos, Kalamas and Aliakmon). We investigate the correlations among suspended sediment yield values and 35 characteristics of the corresponding basins. We find the principal controls to be slope and lithology followed by precipitation and runoff. With the use of stepwise multiple regression analysis, we build a model that employs three variables: slope, precipitation and lithology, where the contribution of lithology is an additive term to the slope-precipitation power relationship. The proposed model achieves good statistics (R2 = 0.86).

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Year: 2022

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