Earth Surf. Dynam. Discuss., doi:10.5194/esurf-2016-57, 2016 Manuscript under review for journal Earth Surf. Dynam. Published: 1 December 2016 c Author(s) 2016. CC-BY 3.0 License. Constraining Quaternary erosion of the Campine Plateau (NE 10 2 Belgium) using Bayesian inversion of an in-situ produced Be concentration depth profile 4 Koen Beerten1, Eric Laloy1, Veerle Vanacker2, Bart Rogiers1, Laurent Wouters3 1Institute Environment-Health-Safety, Belgian Nuclear Research Centre (SCK•CEN), Mol, 2400, Belgium 6 2Georges Lemaitre Centre for Earth and Climate Research, Earth and Life Institute, Université catholique de Louvain, Louvain-la-Neuve, 1348, Belgium 8 3Long-term RD&D department, Belgian National Agency for Radioactive Waste and enriched Fissile Material (ONDRAF/NIRAS), Brussels, 1210, Belgium 10 12 Correspondence to: Koen Beerten (
[email protected]) Abstract. The rate at which low-lying sandy areas in temperate regions, such as the Campine area (NE Belgium), have been 14 eroding during the Quaternary is a matter of debate. Current knowledge on the average pace of landscape evolution in the Campine area is largely based on geological inferences and modern analogies. We applied Bayesian inversion to an in-situ 16 produced 10Be concentration depth profile in fluvial sand, sampled on top of the Campine Plateau, and inferred the average long-term erosion rate together with three other parameters, i.e., the surface exposure age, inherited 10Be concentration and 18 sediment bulk density. The inferred erosion rate of 44 ± 9 mm/kyr (1σ) is relatively large in comparison with landforms that erode under comparable (palaeo-)climates elsewhere in the world.