Tuesday, October 12, 2010

Lab 2: USGS Topographical Maps

Geog 7: Lab #2 USGS Topographic maps

Here are my answers for the questions to the 7.5 minute map:

1. What is the name of the quadrangle?
Beverly Hills Quadrangle

2. What are the names of the adjacent quadrangles?
Adjacent quadrangles starting from due north and going clockwise: Van Nuys, Burbank, Hollywood, Inglewood, Venice, (Open Ocean), Topanga, Canoga Park.

3. When was the quadrangle first created?
The topography was compiled in 1966.

4. What datum was used to create your map?
North American 1927 (NAD 27) was used to create the map & North American 1983 (NAD 83) is shown in dashed lines.

5. What is the scale of the map?
1 : 24 000

6. At the above scale, answer the following:
a) 5 centimeters on the map is equivalent to how many meters on the ground?
5 cm <=> 1200 m

b) 5 inches on the map is equivalent to how many miles on the ground?
5 in <=> 1.894 miles

c) one mile on the ground is equivalent to how many inches on the map?
1 mile <=> 2.64 in

d) three kilometers on the ground is equivalent to how many centimeters on the map?
3 km <=> 12.5 cm

7. What is the contour interval on your map?
Contour interval is 20 ft

8. What are the approximate geographic coordinates in both degrees/minutes/seconds and decimal degrees of:
a) the Public Affairs Building;
DMS: LAT   34° 4' 26.6"     LONG -118° 26' 21"
DD:    LAT 34.07405          LONG -118.43921

b) the tip of Santa Monica pier;
DMS: LAT 34° 0' 27"        LONG -118° 29' 59.7"
DD:    LAT 34.00750        LONG -118.49993

c) the Upper Franklin Canyon Reservoir;
DMS: LAT 34° 6' 11.9"     LONG -118° 24' 48.7"
DD:    LAT 34.10331        LONG -118.41353

9. What is the approximate elevation in both feet and meters of:
a) Greystone Mansion (in Greystone Park);
580 ft or 176.8 m


b) Woodlawn Cemetery;
140 ft or 42.7 m



c) Crestwood Hills Park;
680 ft or 207.3 m


10. What is the UTM zone of the map?
The Universal Transverse Mercator zone of the map is zone 11.

11. What are the UTM coordinates for the lower left corner of your map?
Approximately 361,470 mE by 3,762,970 mN


12. How many square meters are contained within each cell (square) of the UTM gridlines?
Approximately 1,008,560 meters ^ 2


13. Obtain elevation measurements, from west to east along the UTM northing 3771000, where the eastings of the UTM grid intersect the northing. Create an elevation profile using these measurements in Excel (hint: create a line chart). Figure out how to label the elevation values to the two measurements on campus. Insert your elevation profile as a graphic in your blog.
Elevation Profile along UTM northing 3771000:
 





















14. What is the magnetic declination of the map?
The magnetic declination is 14ยบ East.

15. In which direction does water flow in the intermittent stream between the 405 freeway and Stone Canyon Reservoir?
North to South

16. Crop out (i.e., cut and paste) UCLA from the map and include it as a graphic on your blog.
Cropped UCLA from Beverly Hills Quadrangle

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