SIMWE model application on susceptibility analysis to bank gully erosion in Alto Douro Wine Region agricultural terraces

• Type: Article in International Scientific Journal
• Date: 2017

Authors

Fernandes, J (Author) Other; Bateira, C (Author) Other; Soares, L (Author) Other; Faria, A (Author) Other; Oliveira, A (Author) Other; Hermenegildo, C (Author) Other; Moura, R (Author) FCUP; Jose A Goncalves (Author) FCUP

Journal

Title: Catena

Vol. 153

Pages: 39-49

ISSN: 0341-8162

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 18 Citations

Scopus - 20 Citations

Other information

Authenticus ID: P-00M-F7K

DOI: 10.1016/j.catena.2017.01.034

Abstract (EN): This paper focuses on the susceptibility evaluation to bank gullies on earthen embankments through the application of SIMWE (SIMulated Water Erosion) model, using a high resolution digital elevation model (1 meter spatial resolution). The results provided by the model are compared with the hydrologic characteristics, soil texture and soil structure of the agricultural terraces. This approach demonstrates an association between the spatial distribution of erosive forms with high values of water depth and reduced water discharge that are consistent with the lower values of electrical resistivity. The areas with the highest percentage of erosive forms, related to sediment flux, transport capacity and sediment concentration susceptibility, assume medium values. These figures, combined with a low hydraulic conductivity and soil infiltration capacity, are consistent with the fine texture of soils, allowing increased runoff and the development of linear erosion.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11