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Open AccessBook Chapter10.1079/9780851990507.0195

Spatial modelling of ephemeral gully incision: a combined empirical and physical approach.

Victor Jetten,Jean Poesen,Jeroen Nachtergaele,D. van de Vlag-2006-01-01-CABI eBooks
9

TL;DRAbstract

In 1998 and 1999, several ephemeral gullies were monitored in the Ganspoel catchment near Leuven (Belgium). In this study, a modelling framework to simulate the incision and formation of ephemeral gullies is proposed and tested with the gullies measured in Belgium. However, although gully dimensions and exact locations were measured, soil properties needed for the erosion model were not mapped. Thus, the main objective is to investigate if the model is in principle capable of simulating these gullies, using a calibration data set that is within the values normally found in the comparable loess catchments. The system was evaluated by looking at the feasibility of obtaining the field data needed to make adequate predictions with this model. It is proposed to combine landscape indicators with process modelling in order to improve the simulation of ephemeral gully incision, presenting a method requiring little additional data above basic erosion modelling.

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In 1998 and 1999, several ephemeral gullies were monitored in the Ganspoel catchment near Leuven (Belgium). In this study, a modelling framework to simulate the incision and formation of ephemeral gullies is proposed and tested with the gullies measured in Belgium. However, although gully dimensions and exact locations were measured, soil properties needed for the erosion model were not mapped. Thus, the main objective is to investigate if the model is in principle capable of simulating these gullies, using a calibration data set that is within the values normally found in the comparable loess catchments. The system was evaluated by looking at the feasibility of obtaining the field data needed to make adequate predictions with this model. It is proposed to combine landscape indicators with process modelling in order to improve the simulation of ephemeral gully incision, presenting a method requiring little additional data above basic erosion modelling.

Keywords

Ephemeral keyErosionGully erosionHydrology (agriculture)GeologyLoessComputer scienceGeomorphology

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