there are many papers using channel classification as single phase and two phase but i am not able to find the definition of the both type of channels. Most of such studies used reference as Brice classification, but i am not able to find the that paper.
I am not familiar with this classification to comment, but the meaning of phase is not obvious to me from the diagram. Phase is not a term I remember being used in describing channels.
I think the classification developed by David Rosgen would be more helpful and descriptive. His classification has been reviewed and recommended by Luna Leopold and many field hydrologists have used the Rosgen classification as a descriptive and analysis tool.
Of course, there may be other river, stream and channel classifications, descriptions and possibly terms that have been developed, and applied. If it is a common term used in your region, then hopefully you can find applicable answers to its meaning.
Thank You Sir William F. Hansen, I shall go through the classification developed by David Rosgen.
Found out the original reference as 'Brice, J. C., 1975. Air Photo Interpretation of the Form and Behaviour of Alluvial Rivers, Final Report to the U.S. Army Research Office—Durham, Washington University, St. Louis, 10 p'.
The screenshot with the definition is attached.
Thank You.
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