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Early-stage aeolian dune development and dynamics on the upper-beach Waterbouwkundig Laboratorium
Early-stage aeolian protodunes, or ephemeral dunes, are ubiquitous features on the upper-beach, acting as requisite precursors to fully developed dunes. Their formation during high energy aeolian sand transport events plays an important role in the beach morphodynamics and sediment budget. However, little is documented about their life cycle from generation to degeneration as well as their interactions with environmental factors. This study ...
Monitoring and modelling of aeolian sand transport at the Belgian coast. KU Leuven
Restoration and maintenance of coastal beach and dune systems requires knowledge of aeolian sediment transport processes for the prediction of system response to wind forces over short to long-term timescales. This allows for appropriate management of storms in addition to seasonal and decadal variations. Accurate aeolian sediment transport equations are of utmost importance for modern geomorphology and coastal engineering practices. Although ...
Techniques to measure the dry aeolian deposition of dust in arid and semi-arid landscapes: a comparative study in West Niger KU Leuven
Seven techniques designed to measure the dry aeolian deposition of dust on a desert surface were tested during field experiments in Niger, central-west Africa. Deposition fluxes were measured during eight periods of 3-4 days each. Experimental techniques tested were the MDCO (marble dust collector) method, the Frisbee method, the glass plate method (optical analysis of dust deposited on glass surfaces using particle imaging software), the soil ...
Scientific Report on Coastal Resilience. Deliverable D 3.4.1 CREST (Climate Resilient Coast) VLAIO/IWT project 150028 Waterbouwkundig Laboratorium
Varved sediments of Lake Yoa (Ounianga Kebir, Chad) reveal progressive drying of the Sahara during the last 6100 years Universiteit Gent
The sedimentological and geochemical properties of a 7.47 m long laminated sequence from hypersaline Lake Yoa in northern Chad have been investigated, representing a unique, continuous 6100 year long continental record of climate and environmental change in the eastern Central Sahara. These data were used to reconstruct the Mid to Late Holocene history of this currently hyper-arid region, in order to address the question of whether the Mid ...
Nile behaviour and Late Palaeolithic humans in Upper Egypt during the Late Pleistocene KU Leuven
© 2015 The Authors. The reconstruction of the environment and the human population history of the Nile Valley during the Late Pleistocene have received a lot of attention in the literature thus far. There seems to be a consensus that during MIS2 extreme dry conditions prevailed over north-eastern Africa, which was apparently not occupied by humans. The Nile Valley seems to be an exception; numerous field data have been collected suggesting an ...
Heterogeneity in homogeneous Brabantian loess during the Late Pleniglacial Vrije Universiteit Brussel
The Brabantian loess is often seen as a homogeneous sediment package, deposited under cold and dry climatic conditions (Haesaerts et al., 1981). However, in 1981 two small tundra gleysols were discovered in the Brabantian loess (Haesaerts et al., 1981). To unravel other possible changes in the sedimentary system during deposition, a more detailed look at the homogeneous Brabantian loess is carried out. The loess transporting process is ...
Measuring Fast-Temporal Sediment Fluxes wit an Analogue Acoustic Sensor: A Wind Tunnel Study KU Leuven
In aeolian research, field measurements are important for studying complex wind-driven processes for land management evaluation and model validation. Consequently, there have been many devices developed, tested, and applied to investigate a range of aeolian-based phenomena. However, determining the most effective application and data analysis techniques is widely debated in the literature. Here we investigate the effectiveness of two different ...