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0times above the water level during summer. During snowmelt Breidvikelva shows a rather constant high water level which is 1. The impact angle dips steeper into the second outer bank the higher the water level is.
![meander bends meander bends](https://i.etsystatic.com/23619192/r/il/91f7fe/2595052732/il_1588xN.2595052732_lqdc.jpg)
Results show that the flow pattern in the subsequent meander is more susceptible to changes in water level than the first one where the water has a rather straight inflow. Different flow pattern were analyzed and grouped based on statistical similarity measurement. trees, submerged trunks and relatively small coherent local scours in the bank. The investigation shows that the flow is highly influenced by the macro roughness elements of the banks, i. In addition, the secondary flow in the outer bank has been quantified with set of highly dense fixed position ADCP measurements. This density of measurements results in a detailed description of the mean flow in the meander bends.
![meander bends meander bends](https://i1.wp.com/geologypics.com/wp-content/uploads/2020/01/191022-27.jpg)
The flow measurements were conducted in 72 cross sections with 8 crossing for each cross section. The hydraulic measurements have been conducted with a moving Acoustic Doppler Current Profiler (ADCP) along cross sections perpendicular to the main flow. Climatic conditions cause an annual water high stand in spring. The meander bends are strong curved and show an upstream orientation. It developed consecutive meander bends in Holocene fjord sediments. The river is non-regulated and is not exposed to scour protection on the river banks. Focus lies on the abundance of secondary currents and its influence on natural erosion processes within the first two bends. The following two bends turn each 180degrees. The first bend is a 90 degrees turn after a straight reach. A natural meandering river in northern Norway (Troms) has been subject for this investigation. One cause for erosion is natural river migration. Abstract: Soil erosion along riverbanks has been an important issue due to economic and ecological damage.