Soil Erosion Network: Monitoring Metadata
South Limburg, The Netherlands, 1988-93, Loess, Arable/Grazing, Water Erosion

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1 Contact person
1.1 Name Dr. Ad P.J. De Roo
1.2 Address Department of Physical Geography, Utrecht University, P.O. Box 80115, 3508 TC Utrecht, The Netherlands.
1.3 Tel +31 30 253 5773
1.4 Fax +31 30 254 0604
1.5 Email
1.6 Other researchers involved: Mr. F.J.P.M. Kwaad, University of Amsterdam, Mr. C.J. Ritsema & J. Stolte, Staring Centre, Wageningen.
2 Survey Details
2.1 Dates of erosion monitoring survey: 1988-1993
2.1 Water/wind erosion? Water
2.3 Area monitored: South-Limburg, The Netherlands, three catchments (4 km2 in total) in farmland, with additional observations in the whole region.
2.4 Character of area: Loess soils; arable and grazing land; cool temperate oceanic climate.
2.5 Frequency of monitoring: Continuous rainfall and discharge measurements; sediment only during high discharges; measurements of important landscape factors 1-6x per year.
2.6 What fraction of fields in the monitored area were included in the survey? All fields.
2.7 How were estimates of erosion made? Sediment in discharge, location and widths/depths of rill/gullies.
2.8 Were air photographs used? Not relied upon.
2.9 For each erosion site, information recorded: For each catchment, maps of soil type, slope gradient, land use, soil cover, random roughness, location of rills, gullies and depositional fans, wheeltracks.


2.10 Data obtained from elsewhere: In the Etzenrade catchment, 143 137Cs data are available temperature, daily rainfall (if missing), evaporation.
2.11 Data calculated from above information: Total discharge, total soil loss, runoff percentage, timing of erosion.
2.12 Meterological station density and type: Tipping bucket rain gauges: 1 in each of the two small catchments, 3 in the large catchment.
2.13 Length of record of meterological data: Catsop catchment since 1987, Etzenrade catchment since 1988, Ransdaal catchment since 1991.
3. Associated Work
3.1 Associated experimental or plot-based work: 137Cs (De Roo, 1991), infiltration (De Roo & Riezebos, 1992), discharge/sediment load (De Roo, 1993).
3.2 Associated modelling work: ANSWERS (De Roo et al, 1989), Monte Carlo & ANSWERS (De Roo et al., 1992), 137Cs and ANSWERS (De Roo & Walling, 1994), LISEM (De Roo et al., 1995).
4. Documentation
4.1 Published reports of the monitoring survey and/or results:
De Roo, A.P.J. (1991), The use of 137Cs as a tracer in an erosion study in South-Limburg (The Netherlands) and the influence of Chernobyl fallout. Hydrological Processes Vol.5, 215-227.

De Roo, A.P.J. and Riezebos, H. Th. (1992). Infiltration experiments on loess soils and their implications for modelling surface runoff and soil erosion. CATENA, Vol. 19, 221-239.

De Roo, A.P.J. (1993). 'Modelling surface runoff and soil erosion in catchments using Geographical Information Systems; Validity and applicability of the 'ANSWERS' model in two catchments in the loess area of South-Limburg (The Netherlands) and one in Devon (UK)'. Netherlands Geographical Studies, No. 157, Utrecht, pp. 304.

Cremers, N.H.D.T., Van Dijk, P.M., De Roo, A.P.J. and Verzandvoort, M.A. (1995). 'Spatial and temporal variability of soil surface roughness and the application in hydrologic and soil erosion modelling'. Hydrological Processes (in press).

Cremers, N.H.D.T., De Roo, A.P.J. and Van Der Zijp, M. (1995). Validating a splash detachment equation with field measurements. Earth Surface Processes and Landforms (under review).

4.2 Other relevant publications:
De Roo, A.P.J., Hazelhoff, L. and Burrough, P.A. (1989). Soil erosion modelling using 'ANSWERS' and Geographical Information Systems. Earth Surface Processes and Landforms, Vol. 14, 517-532. John Wiley & Sons Ltd.

De Roo, A.P.J., Hazelhoff, L. and Heuvelink, G.B.M. (1992). The use of Monte Carlo simulations to estimate the effects of spatial variability of infiltration on the output of a distributed hydrological and erosion model. Hydrological Processes, Vol. 6, No. 2, 127-143.

De Roo, A.P.J. and Walling, D.E. (1994). Validating the 'ANSWERS' soil erosion model using 137Cs. In: R.J. Rickson (ed.), Conserving Soil Resources. European Perspectives. CAB International, Cambridge, 246-263.

Boardman, J., Ligneau, L., De Roo, A.P.J. and Vandaele, K. (1994). Flooding of property by runoff from agricultural land in Northwestern Europe. Geomorphology, Vol. 10, 183-196.

De Roo, A.P.J., Wesseling, C.G. and Ritsema, C.J. (1995). 'LISEM: a single event physically-based hydrologic and soil erosion model for drainage basins. I: Theory, input and output'. Hydrological processes (in press).

De Roo, A.P.J., Offermans, R.J.E. and Cremers, N.H.D.T. (1995) 'LISEM: a single event physically-based hydrologic and soil erosion model for drainage basins. II: Sensitivity analysis, validation and application'. Hydrological Processes (in press).

5. Availability
5.1 Erosion/land use data: On request subject to GCTE policy.
5.2 Meterological data: On request; for the Etzenrade catchment source (Waterboard) must be acknowledged.
6. Other Information
6.1 Is the monitoring survey ongoing? Yes, on a low level.
6.2 Funding agency for the survey: Utrecht University, Waterboard.
6.3 Any other details:

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