river long profile
TRANSCRIPT
![Page 1: River Long Profile](https://reader031.vdocuments.us/reader031/viewer/2022032221/55b9a132bb61ebeb5b8b45cd/html5/thumbnails/1.jpg)
15 April 2023
River Processes – Long Profile
L.O.To draw a long profile of a river and explain changes in flow, channel shape and channel roughness.
![Page 2: River Long Profile](https://reader031.vdocuments.us/reader031/viewer/2022032221/55b9a132bb61ebeb5b8b45cd/html5/thumbnails/2.jpg)
Upper Course
![Page 3: River Long Profile](https://reader031.vdocuments.us/reader031/viewer/2022032221/55b9a132bb61ebeb5b8b45cd/html5/thumbnails/3.jpg)
Middle Course
![Page 4: River Long Profile](https://reader031.vdocuments.us/reader031/viewer/2022032221/55b9a132bb61ebeb5b8b45cd/html5/thumbnails/4.jpg)
Lower Course
![Page 5: River Long Profile](https://reader031.vdocuments.us/reader031/viewer/2022032221/55b9a132bb61ebeb5b8b45cd/html5/thumbnails/5.jpg)
![Page 6: River Long Profile](https://reader031.vdocuments.us/reader031/viewer/2022032221/55b9a132bb61ebeb5b8b45cd/html5/thumbnails/6.jpg)
![Page 7: River Long Profile](https://reader031.vdocuments.us/reader031/viewer/2022032221/55b9a132bb61ebeb5b8b45cd/html5/thumbnails/7.jpg)
Task…• Draw a sketch of a long profile of a
river.• Add sketch's to show how the
channel cross-section changes. • Annotate to show how the following
change along the profile.– Type of flow– Channel Shape – hydraulic radius/
efficiency– Channel Roughness
![Page 8: River Long Profile](https://reader031.vdocuments.us/reader031/viewer/2022032221/55b9a132bb61ebeb5b8b45cd/html5/thumbnails/8.jpg)
Can you answer the following questions??
1. What conditions cause turbulent flow in a river?2. How do you calculate the hydraulic radius of a
river channel?3. How do you work out the efficiency of a channel?4. What is the efficiency of a channel dependent
on? 5. What impact does channel roughness have on
the flow of water in a channel?6. What does Manning’s formula show and how is it
measured?
![Page 9: River Long Profile](https://reader031.vdocuments.us/reader031/viewer/2022032221/55b9a132bb61ebeb5b8b45cd/html5/thumbnails/9.jpg)
Useful websites….
http://thebritishgeographer.weebly.com/river-processes.html
http://www.acegeography.com/valley-profiles.html