3. Formation of gravel bars

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1. Introduction2. Mountain streams bedload incipient motionand bedload transport outlook3. Formation of gravel bars4. Modelling of fluvial processesForecasting of fluvial processes on the Skawa Riverwithin back-water reach of the Swinna Poreba waterreservoir5. Conclusions
1. IntroductionThe work present work concentrates on description ofsome basic parameters and features of the mountainousstreams which are responsible for morphodynamicalchanges in a their chosen cross sections.The paper deals firstly with description of theparameters of sediment motion in stream and the criticalconditions of motion – basically with the incipient of themotion of sediment,next is describing some features from themountainous gravel river bed which one can find in thefield andfinally the paper is showing a possibility ofmodeling the mentioned phenomena using the casestudy results from one of Polish mountain rivers.
Page 1: Agricultural University of Krakow,
Page 5 and 6: 2. Mountain streams bedload incipie
Page 11 and 12: 3. Formation of gravel barsBank ero
Page 13 and 14: 3. Formation of gravel barsalternat
Page 15 and 16: 3. Formation of gravel barsGravel b
Page 17 and 18: Mountain streams bedload incipient
Page 30 and 31: 4. Modeling of fluvial processesMat
Page 32 and 33: The project is important for Nation
Page 34 and 35: Materials and methods- description
Page 36 and 37: Autumn2002Spring2004Autumn2004Fot.
Page 38 and 39: Field measurements
Page 40 and 41: Field measurementsThe Skawa River t
Page 42 and 43: Mathematical model - GoverningEquat
Page 44 and 45: The Skawa River andSwinna Porebares
Page 46 and 47: The Skawa River - meshgenerating
Page 48 and 49: The Skawa River - meshgenerating
Page 50 and 51: Velocity magnitude for Q=35m3·s-1
Page 52 and 53:
Velocity magnitude for Q=205 m3·s-
Page 54 and 55:
Bed shear stress magnitude for Q=28
Page 56 and 57:
Average water slopes along the rese
Page 58 and 59:
Modeleded water surface levels (WSL
Page 60 and 61:
Bed elevationchanges: Q=205m 3 ∙s
Page 62 and 63:
Median size d 50 changes along the
Page 64 and 65:
Bed material composition for size c
Page 66 and 67:
Grain sizedistribution atcross-sect
Page 68 and 69:
Suspended load concentration for fr
Page 70 and 71:
Armored layer formation according t
Page 72 and 73:
ACKNOWLEDGEMENTThe project FORECAST
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3. Formation of gravel bars

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