category_promotion

Ahead of the curve. Channel pattern formation oflow-energy rivers

activity_person_label JHJ (Jasper) Candel MSc
activity_promotor_label prof.dr. J (Jakob) Wallinga
activity_copromotor_label dr. A (Bart) Makaske
activity_copromotor_label prof. dr MG Kleinhans
activity_promotion_organization_label Wageningen University, Soil Geography and Landscape
Datum der Aktivit├Ąt

Di 18 Februar 2020 16:00 bis 17:30

Standort Aula, gebouwnummer 362
Generaal Foulkesweg 1
362
6703 BG Wageningen
0317-483592

Summary:

In the last decades, realization has grown that channelization of rivers results in loss of ecological niches. Therefore, rivers worldwide are currently being restored. One of the most used restoration measures in small, low-energy rivers is to re- meander the river channel pattern, often by mimicking the sinuous pattern from before channelization. However, it remains largely unknown how sinuous patterns of low-energy rivers naturally form and develop with time. Based on this thesis it appears that the sinuous pattern has hardly anything to do with meandering.
The aim of this doctoral thesis is to understand and predict the channel pattern formation of low-energy rivers. For different types of rivers I reconstructed the development of the river channel over the last ca. 10.000 years, by using coring, ground- penetrating radar and the dating of sediments. The bank strength was identified as a key forming factor of the channel pattern, and incorporated in a newly developed tool that helps water managers to predict how rivers will develop with time. River restoration can benefit from the insights of this research and focus on restoring natural processes of low-energy rivers in a scientifically sound way.