Geog 12 -- Lab 6
Name
Due: beginning
of lab in week 8
Materials: You will need your Goleta Topo map. You should also use the lab handout on projections for this lab provided by your TA. A very useful projection poster from USGS is available online. We highly recommend printing it out and bringing it to lab as well. An excellent resource is also the ACSM online map projection booklet. Other useful information on map projections can be found at Peter Dana's overview on Map Projections at the Virtual Geography Department Web site. At the Map Maker Web site you can generate your own maps with different projections. You can also do this at the Swiss cartography site called KAPRO. A cool animated projections page is here (check out the Java applet at the bottom of this page!).
You can print Lab 6 directly from this site via your favorite web browser. The completed exercise should be turned in as a hardcopy on the date indicated above. Please do not forget to put your name on the exercise sheet! Please note: unstapled assignments will not be accepted. You will need the maps provided in lab to complete this assignment. They will also be on reserve in the Map and Imagery Library during the week, including the USGS map poster.
Part 1: Equivalence and Conformality. Define each of the following in your own words and describe what the "tests" are for each property using the graticule on a map of an unknown projection.
1) Equivalence
2) Conformality
Part 2: Named Projections. For each of the following listed maps, fill in the table with the projection name and characteristics (draw on the material you were given on projections for this section).
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map name |
projection
name
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equal
area?
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conformal?
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preserves
direction?
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Goleta
Topo
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Map
1
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Map
2
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Map
3
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Part 3: Determination of Projection Properties. Use the rules you have learned to determine whether the following map projections A-J might have any of the three indicated properties listed in the table below. For equivalence and conformality, you should always be able to say either definitely not or might be. In the preserving direction column, indicate with yes which one preserves direction, and for those that do preserve direction, write down if it is either a Mercator, Azimuthal or a Gnonomic projection.
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A
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F  |
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B |
G  |
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C  |
H  |
D  |
I  |
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E  |
J  |
| map | equal
area? |
conformal? |
preserves direction? |
| A |
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| B |
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| C |
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| D |
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| E |
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| F |
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| G |
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| H |
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| I |
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| J |
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Which of the projections A-J above might be azimuthal equidistant, centered on the north pole?
Which would be a cylindrical projection?
Which of these is a perspective projection?
Part 4: Projection Identification.
Identify each of the following projections...
| Name: |
| Name: |
| Name: |