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No, it increases as there is more water in the channel.
Wiki User
∙ 14y ago
Wiki User
∙ 11y agoBecause there is more water in the channel
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Why does the rivers wetted perimeter increase as we travele downstream?
Because the Width and Depth both increase downstream. This means the wetted perimeter will also increase.
How does bed load influence the wetted perimeter of a river?
The greater the wetted perimeter, the more friction the water encounters with the bed and sides. This reduces the speed of the river.
What is hydraulic mean radius?
Hydraulic Mean Radius = Cross sectional area of conduit divided by the inside (wetted) perimeter.
The explaination of the Bradshaw model?
The Bradshaw model is a geographical model made in 1978, by Proffesor Michel Bradshaw, which describes how a river's characteristics vary between the upper course and lower course of a river. It shows that channel width, channel depth and the wetted perimeter increase downstream. The Bradshaw Model shows how certain elements of a river increase in size or amount in their journey downstream, while some decrease such as the load particle size.
What is hydraulic means?
Hydraulic Mean Radius = Cross sectional area of conduit divided by the inside (wetted) perimeter.
Does a stream's velocity increase or decrease downstream?
increase
Why does volume of load decrease as you go downstream?
erosion :P
Does gradient of a stream increase or decrease downstream?
Decrease. The source of the river is usually in a mountainous area with a steep gradient.
When you cut off a piece from a 2D shape you reduce the area and perimeter?
The area will decrease but the perimeter can increase, stay the same or decrease depending upon how the piece was cut off.
How do you measure the wetted perimeter of a river?
I'm trying to find out too :P But iv'e found this link :) http://www.geographyteachingtoday.org.uk/fieldwork/resource/fieldwork-techniques/rivers/cross-sections/ With wetted perimeter you simple use a measure tape and starting from one bank you run the tape along the sides and base of the channel including any bumps/holes you come across.
Why does load particles decrease downstream?
Fine silt and mud are carried further downstream than heavier rocks and gravel. Which often results in muddy banks at the river mouth.
Hydraulic diameter of eccentric annulus?
The hydraulic diameter for any cross section is: Dh= 4 * A / Wp Where Dh = hydraulic diameter A = cross sectional area Wp = wetted perimeter
