GEOG 1114 Fieldtrip Exercises and Questions
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GEOG 1114 Fieldtrip Exercises and Questions
Fall 2023
Name: _____________________________________________
Section:______________
Lab TA: _______________ Day & Time: _______________
Note: When you are done, save this Word document as Field exercises_Lastname_First name (e.g.,
Travelogue_Smith_Austin) and upload it to Canvas.
STOP 1 Gloss Mountains State Park (a.k.a. Glass Mountains.
Answer the questions and the exercise after you watch the movie posted for this locality.
Questions:
1. In what geological period did the rocks of Glass Mountain form?
2. Why do locals call it Glass Mountains?
3. What is the type of gypsum of the caprock?
4. What type of landform are the Gloss (Glass) Mountains?
STOP 2 Cimarron River crossing
Answer the questions and the exercise after you watch the movie posted for this locality.
You may need to consult the lab handbook to answer some questions. You may also consult the appendix
at the end of this document.
Exercise 1
On Google Earth, go to the circle marking this stop. From there, trace a 1-mile
path upstream (use the Path tool). Then calculate the stream gradient, as
indicated in Figure 10.4, page 84 of the lab handbook. Consult appendix 1 at the
end of this document.
Answer:
1
Questions:
5. Based on what you saw in the movie and what you obtained in the exercise, what
sediment particle size do you expect to find in this channel?
6. What type of stream channel is this one?
STOP 3 Little Sahara Dunes State Park
Answer the questions and the exercise after you watch the movie posted for this locality.
For some of the answers you may have to consult your lab handbook
Questions:
7. Where did the sand of these dunes originate?
.
8. The Oklahoma Geological Survey reports that the sand size in the dunes varies
mainly within the range of 0.08-0.5 mm. So, what size of sands are we seeing here?
(See the table of page 75 in the handbook to answer this question).
9. Which of the curves in the diagram of Figure 9.3, page 76 in the lab handbook would
be closest to the particle size distribution of the sands of these dunes?
10. Zoom out on Google Earth and observe the dunes. What type of dunes are the ones
here? To answer the question, use the diagram below.
2
Exercise 2
Locate Reference Places 1A and 1B on Google Earth. 1A marks the northern
fence of the dune field, which is the park's boundary. Using the historical image
on the top menu, go back to 1990.
Evidently, as you see in the picture below, the dunes are migrating and going
over the park's fence.
3
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To the right of the figure is the sand rose, indicating the resulting drift direction
(RDD) of the moving sand.
Using the direction indicated by the RDD, and the yearly rate at which the dunes
moved between 1990 and 2017, estimate the years it will take for the migrating
dunes to move from Point 1B to the road (use the white road of the 2017 image).
Show your work.
Answer:
STOP 4 Crossroads Windfarm
14. Why is wind energy known as a form of clean energy?
15. Try to locate this wind farm in the map of wind energy potential (Figure 17 in the
Fieldtrip guide). You may use Figure 1 in the same guide for reference to county
borders. Then, answer the question:
What wind power class does this locality fall in?
Exercise 3
The blades move much faster than you think. Let's calculate blade speed.
Since you cannot be present at this site, you will do the exercise with the turbine
shown in this video:
https://youtu.be/Gwe8KZKOiQs
4
Please focus on the tip of one blade and count the number of
revolutions it makes during
30 seconds
anywhere during the video. You
can time it with your phone clock or the seconds at the bottom of the
video.
Now in this exercise, you will calculate the speed at which the blade tip
moves in miles per hour. Follow the steps below, and
always
show your
work!
1.
Calculate the revolutions per second. To get it, divide the number of
revolutions by 30.
Revolutions per second: ____________________
2.
Now, using the formula below, calculate the blade tip speed.
Blade tip speed = s
x
c
Where
s
is the revolutions per second and
c
is the circumference of the
rotation area (Refer to the figure below.
5
Blade tip speed: _________ meters/second
3.
Now, you will change this to miles per hour.
(1 mile = 1609.34 meters)
(1 hour = 3600 seconds)
Your answer is:
_________ miles per hour.
General exercises and questions
Mark with an x the box if the ecological attributes in the columns apply to the plant
species listed.
Plant
species
Typical of
tallgrass
Prairie
Typical of
mixed-grass
prairie
Typical of
shortgras
s prairie
Sand dune
colonizer
Shrub
spread due
to fire
suppression
Adapted
to saline
soils
Bouteloua
gracilis
Prosopis
glandulosa
Juniperus
virginiana
Distichlis
spicata
Tamarix
ramosissima
Andropogon
gerardii
6
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Schizachyriu
m scoparium
Bouteloua
curtipendula
Yucca
angustifolia
Artemisia
filifolia
Final questions:
16. How much did the annual precipitation change in Stillwater and the Glass
Mountains?
17. The field trip took place mainly within the _______________ biome.
18. What climate type characterized areas covered during the fieldtrip?
Questions: 0.5 points each (x18=9 points)
Exercises 1 and 2: 2 points each (x3=4 points)
Exercise 3: 3 points
Vegetation table: 2 points
7
APPENDIX 1
Another essential concept in stream studies is
stream gradient
, which is the longitudinal slope of the
channel.
Stream gradient affects water velocity and movement of sediments.
The stream gradient is
calculated by measuring the length of a segment (A-B) divided by the elevation difference between points
x and y (See Figure below).
Using Google Earth, you can also obtain elevations and measure the length
of a channel.
Note: If using Google Earth, you will obtain the difference in feet by positioning the cursor on the x and y,
as shown in the following figure, to obtain the elevation in feet.
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