W2023 Fluvial Review
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Grant MacEwan University *
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Course
102
Subject
Geology
Date
Apr 3, 2024
Type
Pages
7
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EASC 102 Fluvial Environments and Gradients Practice Exercises Gradients
Use the Red Deer map sheet. Consider the hill peaking near point A (see annotated map). 1)
Calculate the gradient of the northwest side of the hill, from the top of the hill to point B (at the red x). Show all of your calculations
(Keep two decimal places in all calculations and final results)
____________ m/km 1 in ____________ ___________
%
2)
Now, calculate the gradient of the northeast side of the same hill from the top of the hill to point C (at the red x). Show all of your calculations
(Keep two decimal places in all calculations and final results)
____________ m/km 1 in ____________ ___________% 3)
Based on your results, which side of the hill has the greater slope and therefore the steeper slope?
4)
Scenario: you have joined a climbing expedition to take on Mt. Everest. Your guide tells you that the first day of the climb has a gradient of 1 in 2 (or 1000 m in 2000 m). a)
Draw a triangular sketch of what this gradient would look like (use a scale of 1 cm = 500 m for both the rise and run). Should you plan on using climbing gear on this first leg? The next day, your guide tells you that the climb gradient for the day will be 5 in 1 (or 5000 m in 1000 m). b)
Again, draw a triangular sketch of this gradient using the same scale of 1 cm = 500 m. Again, would you need climbing gear for this leg of the climb?
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Use the Columbia Icefield map sheet. 5)
You are hiking near the mountains and would like to hike up the Saskatchewan Glacier from the terminus of the glacier all the way to Point D (see annotated map). What is the gradient (in m/km) along the glacier for your hike? (Hint: use a straight-line distance on the Columbia Icefield map to determine the “run”). Show all of your calculations.
Types of Drainage Use Google Earth to answer the following questions: 1)
What drainage type is at: 68° 45' 23.75" N, 94° 16' 38.26" E in Siberia (eye altitude at ~320 km)? 2)
What drainage type is at 20° 49' 42.90" N, 156° 54' 37.68" W in Hawaii (eye altitude at ~30 km)? 3)
What drainage type is at 36° 38' 0.15" N, 82° 47' 15.44" W in the Appalachian Mountains (eye altitude at ~8 km)? 4)
What drainage type is at 37° 13' 9.44" N, 112° 55' 0.57" W in Zion National Park, US. (eye altitude at ~8 km)? 5)
What drainage type is at 59° 17' 16.99" N, 110° 9' 19.72" W in Northern Alberta (eye altitude at ~6 km)?
Fluvial Features Use Google Earth to answer the following questions: 1)
What is the fluvial feature at 32° 00' 20.66" N, 91° 13' 14.03" W along the Mississippi River (eye altitude at ~21 km)? 2)
Go to: 34° 33' 45.49" N, 90° 28' 43.11" W (eye altitude at ~28 km). How many generations of meander scars can you spot in this pic? Which is the oldest – on the right or left? 3)
What is the fluvial feature at 34° 50' 35.04" N, 90° 40' 9.53" W. What are these arc shaped features called (eye altitude at ~8 km)? 4)
Go to the Red Deer River at: 52° 12' 28.88" N, 113° 3' 40.47" W (eye altitude at ~2.5 km). a)
What fluvial feature is found at this spot? b)
What is the area around the grey cliffs to the left and across from the previous spot called? c)
Comparing the last two features, where would the water be running the fastest? d)
Where is erosion taking place?
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e)
Where is deposition taking place? 5)
Go to the coordinates: 53° 32' 29.47" N, 113° 28' 48.24" W (eye altitude at ~1.6 km). This is the Louise McKinney Park in Edmonton and it is about 20 meters higher than the river level, but not at the top of the valley. What is this fluvial feature called (tilt the image to get a better view)? 6)
Go to the coordinates: 29° 57' 18.53" N, 90° 3' 7.15" W (eye altitude of ~60m; you could also enter “Street View”). Tilt the image to determine what this human–made structure is; it is found in Gretna, Louisiana. Look a little south of the river at this point. What fluvial feature is the community of Algiers Point located on?