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Measurements, monitoring and numerical modelling of sedimentary and hydro-morphological processes in open-water environments (co-organized)
Convener: Mário J Franca  | Co-Conveners: Kordula Schwarzwälder , Nils Rüther , Stefan Haun , Axel Winterscheid , Stephan Dietrich , Stefan Achleitner , Sándor Baranya , Gabriele Harb 
 / Fri, 13 Apr, 10:30–12:00  / 13:30–17:00
 / Attendance Fri, 13 Apr, 17:30–19:00

Sedimentary processes in aquatic environments such as rivers, estuaries as well as lakes and reservoirs, include entrainment, transport and deposition which are key features for various research disciplines, e.g. geomorphology and paleoclimatology or hydraulics and river engineering. An accurate evaluation of entrainment, transport and deposition rates, conditioning channel morphology, bed composition and sediment fluxes, is fundamental for an adequate development of conceptual sediment budget models and for the calibration and validation of numerical tools. With improved algorithms as well as an increasing computational power, it became feasible to simulate the interaction of water, sediments and air (multiphase flows) with high resolution in space and time. In addition, with an increasing quantity and quality of validation and verification data, both from laboratory experiments and field studies, numerical models become more accurate and it is possible to gain new insight in complex physical processes, e.g. dune development, river bed armoring or density driven transport.

The main goal of this session is to bring together the community of scientists, scholars and engineers, investigating, teaching and applying novel measurement techniques, monitoring concepts and numerical models, which are crucial to determine sedimentary and hydro-morphological processes in rivers, lakes and reservoirs, estuaries as well as in coastal and maritime environments. Within the focus of this session are the evaluation, quantification and modelling of bed load and suspended load, flocculation, settling, and re-suspension/erosion of such processes relevant to morphological channel changes as bed form development, horizontal channel migration, bed armouring and colmation.

A special issue in the journal Earth Surface Processes and Landforms, composed by a selection of the abstracts from the 2017 and 2018 sessions, and with the preliminary title: “Measuring and numerical modelling of hydro-morphological processes in open-water environments” will be prepared.

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