Lab #6 - Assignment - Topographic Profiles & Google Earth(2)
pdf
keyboard_arrow_up
School
Kwantlen Polytechnic University *
*We aren’t endorsed by this school
Course
2400
Subject
Geography
Date
Apr 3, 2024
Type
Pages
5
Uploaded by BarristerPheasantPerson745
1 Name: Lab section: Lab Assignment #6 Topographic Profiles and Google Earth using Google Earth Part A: Vertical Exaggeration (VE) Before answering the VE questions: •
View VIDEO on VE
(beginning of Topographic Profile #7 video). •
Print
handout
: Steps to calculate VE in the Notes/Handouts folder
. This is a step-by-step guide and example of calculating VE. 1)
Convert the vertical scale to a ratio scale
(1:xx
....
format) for each of the following, then calculate the vertical exaggeration (VE) to
1 dp. Show all work.
Vertical Scale Horizontal Scale a)
1 cm to 0.2 km 1:80,000 ratio scale (VS): VE: b)
0.25 cm to 40 m 1 cm = 700m ratio scale (VS): VE:
2 Part B: Topographic Profiles View VIDEOS
demonstrating how to draw a Topographic Profile
. Note:
there are numerous videos, designed to be viewed in steps
, rather than all at once. Create your profile step-by-step
, using the videos and 'Steps to draw a topographic profile' handout to guide you. Print the following
handouts from the Notes/Handouts folder prior to viewing the videos. •
Sample profile
–
provides a sample profile with visual examples of labeling. •
Profile Checklist
–
a written checklist with more-detailed instructions on labeling. •
Steps to calculate VE
–
step-by-step guide and example of calculating VE. MAP SHEET
: Lake Louise, Alberta, Edition 7, 82 N/8, 1: 50,000 2)
What is the contour interval shown on the Lake Louise map? Draw a topographic profile from 11U 5
52
800 mE 57
03
000 mN (1640m) to 11U 5
59
600 mE 57
02
150 mN (2600m). Label the y-axis
of the graph using a vertical scale of 1cm = 200m
(start at 1400m
). Do NOT
use 40m (the contour interval) when labeling the graph. Label the x-axis
with a horizontal scale equivalent to the map scale. Plot every contour line. label the
x-axis (horizontal) and y-axis
(vertical)
of the profile and include the ratio scale for each on the appropriate axis. include a title
.
include the UTM coordinates
and axis orientation
at both ends of the profile. label all landforms
and manmade features.
Record the VE
on the profile. HAND IN
the tick
sheet showing elevations and features. a)
Convert the vertical scale to a ratio scale
(1:xx
....
format). Use the vertical scale given in the assignment (
1cm = 200m
). Label
on the profile’s y-axis. Calculate the profile’s vertical exaggeration
(VE) - record
on the top, right-hand area of the profile. Show all work below. ratio scale (VS) = ___________ VE = ___________
3 Part C: Slope If review of slope is needed, re-watch the slope
VIDEOS
in Lab #5.
3)
Determine the slope in percent and as a degree (to 1 dp
) from 11U 5
60
600 mE 56
86
000 mN (use spot elevation) to 11U 5
67
300 mE 56
85
500 mN. Recall that calculators must be in '
degree
' mode. Show
all work
. Show calculations for UTM
’
s below: Before
calculating the rise & run
, ensure you’ve
found the correct locations
on the map. This is important! Ensure the upper elevation is a spot elevation. It’s very important to learn how to find a location using UTM coordinates. Record the following from the map sheet: Upper elevation = ___________ Lower elevation = ___________ Distance (ruler) = ___________ Rise: Run: Slope = rise/run
Percent: Degree: Slope =
_______________%
_______________ °
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
- Access to all documents
- Unlimited textbook solutions
- 24/7 expert homework help
4 Part D: Google Earth Students need to DOWNLOAD Google Earth Pro onto a home computer or laptop to plot profiles in Google Earth and to answer the questions to follow. (Students have not been successful
using their mobile devices to plot profiles and thereby answer the questions that follow.) Enter 'Chateau Lake Louise, Alberta'
in the 'Search' box. Zoom in and out as required. Close the
'Tour Guide'
box if it appears on the bottom of the screen. 4)
Provide the latitude and longitude
for Chateau Lake Louise
(displayed on the bottom, right-hand side of screen). Since the displayed coordinate changes as one moves the cursor, ensure the cursor is in the correct position prior to recording the coordinate. Show the coordinate in degrees, minutes, and seconds (
whole
numbers, round off). Note:
Remember to use a '0' place-holder if the coordinate includes a single digit number (e.g. '07' instead of '7'). 5)
What is the elevation of Lake Louise (in metres)? m 6)
What is the elevation in feet (whole number, round off)? Show all work for the conversions including units. ft 7)
What is the length of Lake Agnes (in metres to 1 dp)? Use the ruler
tool to measure the length. Click clear
in the ruler box to reset. Select the ruler icon
along the tool bar (or Tools, Ruler
in the Menu bar). The Ruler box will appear; ensure in Line
tab (default). Change units to metres
; drag the ruler box out of the way. Move the cursor to the start-point of the line (zoom in for accuracy) and left click
. A yellow line should appear. Note:
this tool can be finicky –
if a yellow line doesn’t appear, close the ruler box and try again.
Drag the yellow line/cursor to the end-point (zoom in), then left click
. This will create a yellow line between the two locations. The length of the line will be displayed in the Ruler box. What is the length (in metres, whole #)? m 8)
What is the width of Lake Agnes (in metres, whole #)? Measure the widest section. Keep the ruler line perpendicular to the shoreline. m 9)
Use Google Earth to create a topographical profile
of the Pipestone River valley. a)
Use the Ruler
tool to create a line: 11U 5
52
800mE 57
03
000mN to 11U 5
59
600mE 57
02
150 mN.
5 Note:
coordinate system needs to be selected
(lat/long is default).
If using UTM coordinates, select Tools
, then Options
in the Menu Bar (if using a Mac, then Google Earth Pro
, then Preferences
). Ensure in 3D View
tab (default). In the Show Lat/Long
box, select Universal Transverse Mercator
(UTM), then OK. Enter UTM coordinate #1
in the Search
box (white box, blue outline). Enter coordinate in this format: gridzone easting northing. Leave a space between grid zone/easting and between easting/northing. DO NOT
enter mE and mN. (e.g. 11U 552800 5703000). Click on Search
. Alternatively
, the latitude/longitude coordinates can be entered: 51° 28' 33" N 116° 14' 25" W
to
51° 28' 03" N 116° 08' 29" W
. Enter coordinate in this format: latitude longitude. Leave a space between the degree, minute and second. DO NOT
enter the symbols. The hemisphere, N, S, E, or W, must be
included (e.g. 51 28 33 N). Click on Search. Select the ruler icon
. Change the units to km
; drag the ruler box out of the way. Move the cursor to the pin tip of location #1
(zoom in) and left click
. A yellow line should appear. Note:
this tool can be finicky –
if a yellow line doesn’t appear, close the ruler box and try again.
Enter coordinate #2
in the Search
box (the yellow line will follow the cursor to the Search box –
it’s OK)
. Drag the yellow line/cursor to the pin tip of location #2
(zoom in), then left click
. This will create a yellow line between the two locations. The length of the line will be displayed in the Ruler box. What is the length (in km)? km Check to see if the displayed length is approximately the same as the length of your hand-drawn profile. If not, then your yellow line is likely not accurate. Zoom in to view the pin tip before attaching the line. Select Save
in the Ruler box. This will bring up the Google Earth New Path
box –
assign a name (e.g. Lake Louise Profile). Click OK
; the line should turn red. Click on Edit
(in Menu bar)
and select Show Elevation Profile
. Answer the questions that follow while viewing the Google Earth profile. b)
What is the maximum elevation of the profile (read from title bar above profile or off the y-axis)? m c)
What is the minimum elevation? m d)
What is the length of the profile? km Check to see if the displayed length of the profile is approximately the same as your hand-drawn profile. e)
What is the average slope? and . Slope will show as a positive and negative percentage. Positive = uphill; negative = downhill. f)
Does the Google Earth profile look like the one you constructed by hand? Briefly list any differences.