WETMAAP Skill 1
Fort Clatsop: Element 23

Skill 1: Map Use
Element 23: Use of the 2001 Landsat 7 Thematic Mapper Satellite Image

Materials:

            2001 (3) Landsat 7 Thematic Mapper (TM) Satellite Images
            2000 Black and White  (B/W) Aerial Photograph   
            1981 Color Infrared  (CIR) Aerial Photograph
            1:24,000 scale Warrenton -Astoria Topographic Quadrangle           
            1:100,000 scale  Fort Clatsop Topographic Quadrangle
            magnifying glass  

Exercises:

Part 1:

1. Using the 1:24,000 scale Warrenton -Astoria Topographic Quadrangle and the 2000 aerial photograph locate:

                  a. Astoria

                  b. Lewis and Clark River

                  c. Fort Clatsop National Memorial

2. Using the 1:100,000 scale Fort Clatsop Topographic Quadrangle and the 2000 aerial photograph locate:

                  a. Astoria

                  b. Lewis and Clark River

                  c. Fort Clatsop National Memorial

3. Using the July 2001 Landsat 7 TM Satellite Images and the 1:100,000 scale Fort Clatsop Topographic Quadrangle locate:

                  a. Astoria

                  b.Lewis and Clark River

                  c.  Fort Clatsop National Memorial

4. Using the July 2001 Landsat 7 TM Satellite Images and the 2000 aerial photograph locate:

                  a. Individual Buildings in Astoria

                  b. Large blimp hangar at airport

                  c. Fort Clatsop National Memorial

5. What would you suggest about the information that you are able to visualize between the various maps, the 2000 aerial photograph, and the satellite images:

                  which shows the greatest detail?             _______________________

                  which shows the least detail?              _________________________

                  which is the smallest scale image?          ________________________

6. What is the scale of the satellite image?  __________________________________           

Part II:

The 1981 aerial photograph is a Color Infrared (CIR) Image.

1.      What does “color infrared” mean?

                  ____________________________________________________________

2.      Which Landsat 7 TM  satellite image approximates a color infrared image?

                  ____________________________________________________________

3.      What does “Natural Color” mean?

                  ____________________________________________________________

4.      Which Landsat 7 TM satellite image approximates a Natural Color (NC) image?

                  ____________________________________________________________

5.      What is the other Landsat 7 TM satellite image?

                  ____________________________________________________________

6.      Compare the 2001 Landsat 7 TM, CIR, NC, and B&W images.  The following features are best represented in which of the three images.