12.07.2015 Views

3. Formation of gravel bars

3. Formation of gravel bars

3. Formation of gravel bars

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1. IntroductionThe work present work concentrates on description <strong>of</strong>some basic parameters and features <strong>of</strong> the mountainousstreams which are responsible for morphodynamicalchanges in a their chosen cross sections.The paper deals firstly with description <strong>of</strong> theparameters <strong>of</strong> sediment motion in stream and the criticalconditions <strong>of</strong> motion – basically with the incipient <strong>of</strong> themotion <strong>of</strong> sediment,next is describing some features from themountainous <strong>gravel</strong> river bed which one can find in thefield andfinally the paper is showing a possibility <strong>of</strong>modeling the mentioned phenomena using the casestudy results from one <strong>of</strong> Polish mountain rivers.

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