1. CS 128/ES 228 - Lecture 13b1 Spatial Analysis – A Case Study Patrick Kish Class project for Resource Management 591 West Virginia University 14 Dec 2001

2. CS 128/ES 228 - Lecture 13b2 Problem Landslides are present in certain areas of West Virginia Question: How much of a determinant is land slope in this matter?

3. CS 128/ES 228 - Lecture 13b3 Where to begin? West Virginia Landslide and Slide Prone Areas map Paper only so scanned in

4. CS 128/ES 228 - Lecture 13b4 What to add? DEMs available at different resolutions 10 meter and 30 meter resolution DEMs imported Also a Geology map and a DOQQ

5. CS 128/ES 228 - Lecture 13b5 Adding relevant data Landslide polygons added through “heads up” digitization Attribute table used for determining area of slides

6. CS 128/ES 228 - Lecture 13b6 Hypothesis Slope has something to do with the prevelance of landslides Literature suggests that 35 degrees is a critical value

7. CS 128/ES 228 - Lecture 13b7 Getting Slope Information ArcMap’s Spatial Analysis was applied to DEMs Slope shown by color – degree values in Table of Contents

8. CS 128/ES 228 - Lecture 13b8 30 meter resolution

9. CS 128/ES 228 - Lecture 13b9 10 meter resolution

10. CS 128/ES 228 - Lecture 13b10 More interesting analysis Intersecting slope map with slide polygons layer allows us to determine average slope of a slide Determined to be 34.81 degrees

11. CS 128/ES 228 - Lecture 13b11 Further filtering – 10 m

12. CS 128/ES 228 - Lecture 13b12 Further filtering – 30 m

13. CS 128/ES 228 - Lecture 13b13 Final product What layers should be included? How should they be arranged?

14. CS 128/ES 228 - Lecture 13b14 A Useful Map?

15. CS 128/ES 228 - Lecture 13b15 Intriguing Questions Why doesn’t 30 m map do “better”? What role does geology play? What about soil type?

16. CS 128/ES 228 - Lecture 13b16 BIBLIOGRAPHY All figures (and details about the study) were taken from: http://www.nrac.wvu.edu/rm493-591/fall2001/students/kish/ The%20Use%20of%2010%20Meter%20and%2030%20Meter%20Digital%20Elevation%20Models% 20for%20Determining%20Areas%20Susceptible%20to%20Landsliding%20in%20the%20Morganto wn%20N.htm http://www.nrac.wvu.edu/rm493-591/fall2001/students/kish/ The%20Use%20of%2010%20Meter%20and%2030%20Meter%20Digital%20Elevation%20Models% 20for%20Determining%20Areas%20Susceptible%20to%20Landsliding%20in%20the%20Morganto wn%20N.htm Alas, as with so much data on the Internet, this has proven transitory. A Google search will find this URL for you, but the only remaining record is a Master’s thesis on the subject which is only available from on the WVU campus.