topographic map f23 profile, draw and interpolate
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Mineral Area College *
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2200
Subject
Geography
Date
Dec 6, 2023
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docx
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6
Uploaded by ConstableBravery2938
Name_______________________(Write on the copy from the lab kit and
upload an image of the completed lab in mymac).
The lab may also be
downloaded and printed from the assignment in mymac.
Lab adapted from:
https://pressbooks.bccampus.ca/geolmanual/chapter/exercises-on-
topographic-maps/
A.1. The following topographic map (Figure 6.13) is from a coastal area.
All contour lines are spaced at a 20 m contour interval.
Figu
re 6.13 |
Coastal area topographic map. Source: Karla Panchuk (2020) CC BY-SA 4.0, adapted from
J
oyce M. McBeth (2018) CC BY-SA 4.0
(
view source
) and Brad Deline (2017) CC BY-SA 3.0
(view source).
a) Label the elevation of every contour line on the map.
Remember: Elevations
are measured in meters above sea level. (The Ocean has an elevation of 0)
b) What is the elevation difference between the heavy contour lines?
A.2. Figure 6.14 shows five waypoints (A, B, C, D, and E) on a
topographic map. The dashed lines are contour lines. The slope of the
area is uniform.
a) Write your estimates for the elevation at each waypoint next to the
waypoint.
b) How did you decide on the estimated elevations for points A and E?
Figu
re 6.14
|
Estimating elevations exercise. Note that the double thick line is the edge of the figure, not a part of the topographic map. Source: Joyce
M. McBeth (2018) CC BY-SA 4.0
A.3. Drawing Topographic Contours
Imagine you are a geologist and you are tasked with creating your own
coastal topographic map, so you hike around a coastal area with a GPS
receiver (Global Positioning System) and every so often you record your
position along with the elevation in meters at that point, which results in the
map below (Figure 6.15).
Complete this map by adding in contour lines
using a contour interval of
100 m
. Draw the contour lines so that they are continuous: they will either
continue to the edge of the map or form an enclosed circle. Your contour lines
will generally fall between the GPS points on your map, so you will need to
estimate many of the contour line positions.
Be sure to label your contour
lines.
Figure 6.15 |
Elevation measurements.
Source: Joyce M. McBeth (2019) CC BY-SA 4.0, after Brad Deline (2017) CC BY-SA 3.0
view source
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