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Total sediment transport by the rivers of Abruzzi (Central Italy): prediction with the RAIZAL model

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Abstract.

As sediment transport is mainly correlated with accelerated soil erosion, the study attempted to quantify the sediment transport by relying on qualitative classes of soil erosion risk. The classes were obtained by applying a modified RAIZAL model (MICROLEIS software package) to the most representative catchment basins of the Abruzzi area (Central Italy). They are characterized by eight homogeneous lithological groups (terrigenous and carbonatic units). Each lithological group is related to specific types of morphology, soil and land use. The estimates of total sediment transport obtained using the modified RAIZAL Codex were in good agreement with those measured or estimated by other methods, suggesting that the use of this Codex would be a valid alternative.

Résumé.

Comme le transport de sédiments est principalement corrélé à l'érosion des sols, l'étude réalisée a tenté de quantifier le transport de sédiments en s'appuyant sur des classes de risque d'érosion des sols. Les classes ont été obtenues en utilisant le modèle RAIZAL modifié (logiciel MICROLEIS) pour les bassins versants les plus représentatifs de la région des Abruzzes (Italie centrale). Ils sont caractérisés par huit groupes lithologiques homogènes (unités détritiques et carbonatées). Chaque groupe lithologique correspond à des types particuliers de morphologie, de sol et d'aménagement. Les estimations des transports totaux de sédiments obtenues avec le code RAIZAL étaient en bon accord avec les valeurs mesurées ou estimées par d'autres méthodes.

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Farroni, .A., Magaldi, .D. & Tallini, .M. Total sediment transport by the rivers of Abruzzi (Central Italy): prediction with the RAIZAL model. Bull Eng Geol Environ 61, 121–127 (2002). https://doi.org/10.1007/s100640100127

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  • DOI: https://doi.org/10.1007/s100640100127

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