![]() ![]() Both cases yielded consistent and complementary results from which a generic scheme for flow patterns and morphological evolution was derived. Field measurements were performed in the exit of the Port‐Galland cutoff meander, Ain River (France). Laboratory experiments were conducted with a mobile‐bed physical model of the Morava River (Slovakia). Two similar field and laboratory cases were investigated using innovative velocimetry techniques (acoustic Doppler profiling, image analysis). The study focusses on flow and sediment dynamics in the exit of a cutoff meander where the downstream entrance is still connected to the main channel, but the upstream entrance is closed. The morphological evolution of the entrances and exits of abandoned river channels governs their hydrological connectivity. Earth Surface Processes and Landforms Wiley Attempts at morphological prediction should consider not only the flow and sediment conditions in the cavity, but also the dynamics of the main channel. Also, fine sediment deposits constituted a silt layer in a transitional zone, located between the mouth of the abandoned channel and the oxbow‐lake within the cutoff meander. In the field, strong secondary currents were observed, especially in the inflow, which may enhance the scouring of the downstream corner of the cavity. A decelerating inflow deposits bedload in the downstream part of the cavity, while the upstream part is eroded by an accelerating outflow, leading to the retreat of the upstream bank. A simple analogy with flows in rectangular side cavities was used to explain the recirculating flow patterns which developed in the exit. Saving Earth Britannica Presents Earth’s To-Do List for the 21st Century.Morphodynamics of the exit of a cutoff meander: experimental findings from field and laboratory studies Morphodynamics of the exit of a cutoff meander: experimental findings from field and laboratory.Ĭoz, J.Britannica Beyond We’ve created a new place where questions are at the center of learning. ![]() 100 Women Britannica celebrates the centennial of the Nineteenth Amendment, highlighting suffragists and history-making politicians.COVID-19 Portal While this global health crisis continues to evolve, it can be useful to look to past pandemics to better understand how to respond today.Student Portal Britannica is the ultimate student resource for key school subjects like history, government, literature, and more.Britannica Explains In these videos, Britannica explains a variety of topics and answers frequently asked questions.Demystified Videos In Demystified, Britannica has all the answers to your burning questions.This Time in History In these videos, find out what happened this month (or any month!) in history.#WTFact Videos In #WTFact Britannica shares some of the most bizarre facts we can find.Britannica Classics Check out these retro videos from Encyclopedia Britannica’s archives. ![]()
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