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Task 3. Under the DAEDALUS subdirectory, there are two image files aerial.jpg and thermal.jpg. These two images were acquired in November 1976 over Brookhaven National Laboratory on Long Island, New York. The panchromatic aerial photograph aerial.jpg includes an overlay of buried steam and condensate lines and manholes that was provided by the Brookhaven maintenance staff. The night thermal image thermal.jpg was acquired in the spectral band 8-14 μm by Daedalus Enterprises, Inc. Visually interpret the thermal images and answer the following questions: Question 12. What features are located in the regions H and F? Explain why these regions appear bright in the nighttime thermal image. Question 13. Some light spots can be seen on the rooftops of buildings D and E. What are these features? Explain why they appear light on the thermal image. Question 14. What do the pavement (G) and the lawn grass look like in the nighttime thermal image? Question 15. Can you observe the buried heating lines and manholes on the nighttime thermal image? Question 16. The Brookhaven maintenance staff suspects that the steam lines were leaking the heat because pipe insulation had deteriorated. Visually interpret the thermal image and identify the possible locations for major leaks. Please print out a hardcopy map and identify possible leaks using the annotation tool - 8 -
Task 4. Under the ATLAS subdirectory, there are two thermal atlanta0.jpg and atlanta1.jpg. They are ATLAS channel 13 imagery (9.6-10.2 μm) with 10m spatial resolution (original images) over Atlanta central business district (CBD), one during the day and one at night. Both images are oriented with north at the top. Visually interpret the images and answer the following questions: Question 17. Which image is the daytime thermal image and which is the nighttime image? Explain why? Question 18. Why do the lakes appear dark in the daytime thermal infrared image and light in the nighttime thermal infrared image? Question 19. Can you observe the shadows from tall building on the daytime thermal image? Explain why the Georgia Dome (round shaped object) appears dark in both images? Question 20. Several objects appear very dark in the nighttime image while are relatively bright in the daytime image. What are these objects? II. Lab Report The lab report must be typed, as hand-written work will not be accepted. You should put your name and lab session number on the cover page. The lab report should contain: 1) Short answers to each question in your own words; and 2) The required maps. - 9 -
Page 1 and 2: -1- Lab Exercise GEOG 361/651 Dr. A
Page 3 and 4: The L MINs and L MAXs are the spect
Page 5 and 6: III. Instructions Task 1: The therm
Page 7: Tips Much of what is required here

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