roughness of channel

См. также в других словарях:

• roughness coefficient —    A coefficient that describes roughness of a channel bed [16] …   Lexicon of Cave and Karst Terminology

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• Hydraulic roughness — is the measure of the amount of frictional resistance water experiences when passing over land and channel features.[1] One roughness coefficient is Manning s n value.[2] An increase in this n value will cause a decrease in the velocity of water… …   Wikipedia

• bed roughness —    The roughness of a channel or river bed [16] …   Lexicon of Cave and Karst Terminology

• manning roughness coefficient —   after Robert Manning. A measure of channel resistance which is used as part of a formula to calculate velocity (Manning N). The values vary between 0.02 for smooth channels and 0.10 for very rough channels …   Geography glossary

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