Naslov
Model for erosion intensity and sediment production assessment based on Erosion Potential Method modification

Autori
Dragičević, Nevena

Vrsta, podvrsta i kategorija rada
Ocjenski radovi, doktorska disertacija

Fakultet
Građevinski fakultet

Mjesto
Rijeka

Datum
07.10

Godina
2016

Stranica
178

Mentor
Mentor: Karleuša, Barbara ; komentor: Ožanić, Nevenka

Ključne riječi
soil erosion; water erosion; Erosion Potential Method; Gavrilović method; erosion sediment production

Sažetak
Erosion is a physical process, characterised by significant variations in its intensity and frequency all over the world. Erosion varies upon many elements, among which the most significant are climate parameters precipitation and temperature, as well as other parameters such as geology, topography, vegetation cover and anthropogenic influences. The topic of the dissertation is the analysis of erosion intensity and sediment production using Erosion Potential Method also known as Gavrilović method and its application in the Dubračina catchment in Vinodol Valley. This method is intended for the quantification of erosion processes by estimation of erosion intensity, sediment production and transportation of erosion sediment by river network. This method is intended for the estimation of mentioned outputs on annual basis and in the dissertation the emphasis is given upon its adjustment on the seasonal base by changing three main model parameters: precipitation, soil protection coefficient and temperature. Modified model has given good approximations of soil erosion and can be used in future research. Based on seasonal erosion sediment production estimations measures for erosion prevention and protection were proposed, as a key element for timely and adequate torrent catchment management. The sensitivity analysis was conducted as to define parameters the method is most sensitive, highlighting soil erodibility coefficient and soil protection coefficient as ones affecting it the most. The model uncertainty analysis was conducted with consideration to source and time-varying input data. Source-variant parameters have shown to have a greater impact upon model outcomes while time-variant parameters have significantly less impact upon model and their uncertainty is related to climate change in 30-year time period.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

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