Homework for Investigating Time Series of Satellite Imagery
This homework includes questions from the lectures and exercises from both sessions of this webinar. Some questions refer to portions of the exercise that can be best answered as you are completing the steps. Thus, it may be best to record your answers on a sheet of paper or elsewhere before submitting them here. You will not be able to save you answers and come back to complete this form at a later time.

To receive a certificate of completion, you must have attended both live sessions and complete this homework by May 1, 2019. Once you submit the homework, you will receive an email with a copy of your responses.

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Name (First Last) *
Session 1 Lecture Questions
1. Time series analysis can be used to investigate: *
2. Provide two examples of abrupt landscape changes that can be observed from Landsat images. *
3. What is a Dynamic Habitat Index? *
4. The Breaks for Additive Seasonal and Trend Method (BFAST) allows the user to: *
5. Name two datasets available from AppEEARS *
6. Open Google Earth Pro on Desktop. If you don't have Google Earth, you can download it here: https://www.google.com/earth/versions/. In the search bar, type in "Caroebe, Brazil" and select it to zoom to the location. Along the top panel, click on "View", and turn on "Historical Imagery". Move the time slider back and forward in time and examine the landscape. Describe what you observe. *
Session 1 Exercise Questions
7. Go to your Session 1 exercise using AppEEARS. Complete the exercise up to step 19. In the AppEEARS web tool, hover your cursor over the NDVI Time series you created for site B1. What is the NDVI value for June 2005? *
8. Continue with your Session 1 exercise using AppEEARS. Complete the exercise up to step 39. Using your excel graph you created, during what time period do you see a decrease in NDVI values for sites B1, B2, and B3? *
9. Continue until you complete the entire Session 1 exercise using AppEEARS. What is the dominant land cover class for this region? *
10. Name one aspect you liked about AppEEARS one aspect you think could be improved or changed. *
Session 2 Lecture Questions
11. What are the two primary analysis approaches for vegetation disturbance algorithms?   *
12. LandTrendr creates one Landsat mosaic image for each: *
13. Describe "temporal segmentation" in LandTrendr. *
14. Name the three user interface applications of LandTrendr in GEE. *
15. The Vegetation Regeneration and Disturbance Estimates Through Time (VeRDET) algorithm primarily uses which statistical technique? *
16. The Vegetation Change Tracker (VCT) uses which two metrics to analyze change? *
17. Describe a region or landscape you are interested in for your work. Which vegetation disturbance algorithm would you use? Why? *
Session 2 Exercise Questions
18. Go to your Session 2 exercise using LT-GEE. Complete the exercise up to step 12. In the exercise, the pixel chosen had an NBR value of 0.723 in 2013 and a value of  -0.264 in 2014. What are the 2013 and 2014 values from the pixel you choose? *
19. Continue with your Session 2 exercise using LT-GEE to step 25. Hover your cursor over the NDMI time series plot. What is the value for 2013? *
20. Finish your Session 2 exercise using LT-GEE. How does the magnitude of disturbance of the beetle infestation compare to the the magnitude of disturbance of the Rim Fire? *
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