Saturation-excess overland flow in the European loess belt: An underestimated process?
A major challenge in runoff and soil erosion modelling is the adequate representation of the most relevant processes in models while avoiding over parameterization. In the European loess belt, progressive soil crusting during rainfall events, resulting in infiltration-excess runoff, is usually consi...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-12-01
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| Series: | International Soil and Water Conservation Research |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095633923000254 |
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| author | Valentin Landemaine Olivier Cerdan Thomas Grangeon Rosalie Vandromme Benoit Laignel Olivier Evrard Sébastien Salvador-Blanes J. Patrick Laceby |
| author_facet | Valentin Landemaine Olivier Cerdan Thomas Grangeon Rosalie Vandromme Benoit Laignel Olivier Evrard Sébastien Salvador-Blanes J. Patrick Laceby |
| author_sort | Valentin Landemaine |
| collection | DOAJ |
| description | A major challenge in runoff and soil erosion modelling is the adequate representation of the most relevant processes in models while avoiding over parameterization. In the European loess belt, progressive soil crusting during rainfall events, resulting in infiltration-excess runoff, is usually considered the dominant process generating runoff on catchments covered with silty soils. Saturation-excess may also occur and affect their runoff and erosion behavior. However, saturation-excess runoff occurrence and quantification have rarely been performed and is usually not taken into account when modelling runoff and erosion in these environments. Accordingly, a continuous simulation of the Austreberthe catchment (214 km2), located in the European loess belt (Normandy, France), was conducted with the new Water and Sediment (WaterSed) model over 12 years, corresponding to more than 780 individual rainfall events, at a 25 m spatial resolution. The inter-annual variability of runoff and erosion was closely linked to the number of intense events per year and their distribution through the year. The model was properly calibrated over a representative set of 35 rainfall events, considering either infiltration-excess and/or saturation-excess runoff. It was also able to reproduce the measured runoff volume for most of the monitoring period. However, the three years with most rainfall were adequately modelled only including saturation-excess runoff. An analysis performed at the seasonal scale revealed that saturation was modelled in the catchment during almost all of the modelling period, suggesting the importance of this often overlooked process in current modelling attempts. |
| first_indexed | 2024-03-07T16:42:08Z |
| format | Article |
| id | doaj.art-42f4a123409b4c80aa0769df5b847d57 |
| institution | Directory Open Access Journal |
| issn | 2095-6339 |
| language | English |
| last_indexed | 2024-03-07T16:42:08Z |
| publishDate | 2023-12-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | International Soil and Water Conservation Research |
| spelling | doaj.art-42f4a123409b4c80aa0769df5b847d572024-03-03T07:34:32ZengKeAi Communications Co., Ltd.International Soil and Water Conservation Research2095-63392023-12-01114688699Saturation-excess overland flow in the European loess belt: An underestimated process?Valentin Landemaine0Olivier Cerdan1Thomas Grangeon2Rosalie Vandromme3Benoit Laignel4Olivier Evrard5Sébastien Salvador-Blanes6J. Patrick Laceby7BRGM, F-45060, Orléans, FranceBRGM, F-45060, Orléans, France; Corresponding author.BRGM, F-45060, Orléans, FranceBRGM, F-45060, Orléans, FranceUniversity of Rouen, M2C, Rouen, FranceLaboratoire des Sciences du Climat et de l’Environnement (LSCE/IPSL), Unité Mixte de Recherche 8212 (CEA/CNRS/UVSQ), Université Paris-Saclay, Gif-sur-Yvette, FranceUniversity of Tours, UR 6293 – GéoHydrosystèmes Continentaux (GEHCO), FranceAlberta Environment and Protected Areas, Calgary, CanadaA major challenge in runoff and soil erosion modelling is the adequate representation of the most relevant processes in models while avoiding over parameterization. In the European loess belt, progressive soil crusting during rainfall events, resulting in infiltration-excess runoff, is usually considered the dominant process generating runoff on catchments covered with silty soils. Saturation-excess may also occur and affect their runoff and erosion behavior. However, saturation-excess runoff occurrence and quantification have rarely been performed and is usually not taken into account when modelling runoff and erosion in these environments. Accordingly, a continuous simulation of the Austreberthe catchment (214 km2), located in the European loess belt (Normandy, France), was conducted with the new Water and Sediment (WaterSed) model over 12 years, corresponding to more than 780 individual rainfall events, at a 25 m spatial resolution. The inter-annual variability of runoff and erosion was closely linked to the number of intense events per year and their distribution through the year. The model was properly calibrated over a representative set of 35 rainfall events, considering either infiltration-excess and/or saturation-excess runoff. It was also able to reproduce the measured runoff volume for most of the monitoring period. However, the three years with most rainfall were adequately modelled only including saturation-excess runoff. An analysis performed at the seasonal scale revealed that saturation was modelled in the catchment during almost all of the modelling period, suggesting the importance of this often overlooked process in current modelling attempts.http://www.sciencedirect.com/science/article/pii/S2095633923000254European loess beltSoil erosionSaturation-excess runoffWaterSed model |
| spellingShingle | Valentin Landemaine Olivier Cerdan Thomas Grangeon Rosalie Vandromme Benoit Laignel Olivier Evrard Sébastien Salvador-Blanes J. Patrick Laceby Saturation-excess overland flow in the European loess belt: An underestimated process? International Soil and Water Conservation Research European loess belt Soil erosion Saturation-excess runoff WaterSed model |
| title | Saturation-excess overland flow in the European loess belt: An underestimated process? |
| title_full | Saturation-excess overland flow in the European loess belt: An underestimated process? |
| title_fullStr | Saturation-excess overland flow in the European loess belt: An underestimated process? |
| title_full_unstemmed | Saturation-excess overland flow in the European loess belt: An underestimated process? |
| title_short | Saturation-excess overland flow in the European loess belt: An underestimated process? |
| title_sort | saturation excess overland flow in the european loess belt an underestimated process |
| topic | European loess belt Soil erosion Saturation-excess runoff WaterSed model |
| url | http://www.sciencedirect.com/science/article/pii/S2095633923000254 |
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