EXERCISE 1: DATA SHEET
1. What type of river is at location A, and how can you tell?
2. Discuss briefly the processes of erosion and deposition that are occurring in the area around Location A.
3. Is there any evidence of these processes operating in the past along this portion of the Snake River? If so, describe the evidence. If not, describe the evidence you would have expected to see but did not.
4. What type of river is at Location B?
5. How is the Colorado River at Location B similar to the Snake River at Location A? How is it different?
6. What type of river is shown at Location C?
7. What type of river is shown at Location D?
8. How is the river at Location D similar and/or different to the Congo River at Location C?
9. What is the name of the fluvial landform at Location E?
10. In the past, the Mississippi Delta was located at many different positions in the Gulf of Mexico. Knowing this, explain the possible origin of the Mississippi Canyon to the southwest of Location F.
11. What is the feature at Location G called?
12. What is the elevation loss from the top to the bottom of the profile in meters? What is the average slope?
13. What is the elevation of the point "Zone of Erosion"? (Hint: It will be listed at the bottom of the window to the right of the text labeled "elev.")
14. What is the map length of the line you drew from the "Zone of Erosion" to the "Fan Elevation Profile"?
15. What is the ground length of the line in question 14? What do you think causes the difference between the map length and the ground length measurements?
16. What feature is shown at Location H?
EXERCISE 1: POST-LAB QUESTIONS
1. What is the eventual fate of the Oxbow Bend at Location A?
2. Using the Google EarthTM mapping service, follow the Colorado River to its terminus (the mouth of the river where it empties into a body of water). What is the name of this body of water?
3. Is there a delta at the terminus of the Colorado River? If so, is it high-constructive or high destructive. If not, why do you think it is absent?
4. Is the landform at Location E high-destructive or high-constructive? How can you tell?
5. Calculate the average discharge of the Mississippi River at New Orleans (in cubic feet per second) given the following parameters: (show your work)
Average velocity: 2.5 miles per hour Average width: 2,000 feet Average depth: 90 feet
Discharge = velocity (ft/sec) x river width (ft) x river depth (ft)
*Remember, you will need to convert miles-per-hour to feet-per-second to obtain the proper units for discharge (ft3/sec). There are 5,280 feet in a mile.
Attachment:- Assignment.rar