GEOLINKS International Conference 2020, Book 1

SOIL SCIENCE

THE APPLICATION AND VALIDATION OF PHYSICALLY-BASED EROSION AND EMPIRICAL MODEL IN CENTRAL POLAND

Ing. Zuzana Németová, Ing. Adam Krajewski, PhD., Prof. dr hab. Kazimierz Banasik, PhD., Prof. Ing. Silvia Kohnová, PhD

ABSTRACT

The general problem of an appropriate erosion modelling can be seen in a lack of available data and in the validation and verification of the methodologies applied. The article includes two significant and challenging topics, i.e. the evaluation of the sediment amounts in a catchment and the validation of the methodologies used. The importance of the sediment estimation can be found not only in the modelling and prediction fields but also in the terms of engineering practice. The significance of erosion model validation lies in the confidence in the model itself and in the detection of its applicability and relevance. In this study, results obtained from the physically-based EROSION-3D model was compared with the sediment yield of a small agricultural catchment in central Poland. The estimation of sediment yield from the agricultural catchment has been conducted using the empirical method (USLE) coupled with a sediment delivery ratio (USLE-SDR) and verified by reservoir measurement. Firstly, the application of a physically-based EROSION-3D model has been done based on a continuous rainfall series for the selected period and afterwards the results have been compared with the sediment yield obtained by the empirical methods in order to test a model´s performance. The results of the paper point to the comparison of the results obtained by two different approaches, i.e. the physically-based and empirical methods together with the validation of the methods through the acoustic depth measurements.

 

KEYWORDS

erosion modelling, physically-based model, sediment estimation, rainfall events, empirical model

REFERENCE
GEOLINKS International Conference, Conference Proceedings, ISSN 2603-5472, ISBN 978-619-7495-07-2, THE APPLICATION AND VALIDATION OF PHYSICALLY-BASED EROSION AND EMPIRICAL MODEL IN CENTRAL POLAND, 219-227 pp, DOI paper 10.32008/GEOLINKS2020/B1/V2/22