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The Impact of 2004 Hurricane Season on Beach Erosion in Volusia County, Florida

The Impact of 2004 Hurricane Season on Beach Erosion in Volusia County, Florida. Valentina David Bethune-Cookman College Daytona Beach, FL 32114 NASA Summer Faculty Research Opportunities June 6 – August 12, 2005 DeNeice Guest Science Systems And Applications, Inc. Significance of Beach.

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The Impact of 2004 Hurricane Season on Beach Erosion in Volusia County, Florida

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  1. The Impact of 2004 Hurricane Season on Beach Erosion in Volusia County, Florida Valentina David Bethune-Cookman College Daytona Beach, FL 32114 NASA Summer Faculty Research Opportunities June 6 – August 12, 2005 DeNeice Guest Science Systems And Applications, Inc.

  2. Significance of Beach • Revenue source • Tourist attraction • Economic growth • Coastal habitat • Exotic vegetation • Turtle nesting

  3. Tourism in Volusia county, Revenue • 9.5 million tourists • Spent $3.7 billion ($435/person) • Tourist Tax is $4,536,520 • Convention tax is $6,908,644 • Economic impact of events is $612 million • Events are Speed week, bike week, Spring break, Independence day. • http://floridabusiness.org/impact.htm

  4. Outline • 2004 hurricane season • Study area description • Methodology • Change detection analysis • Quantification of beach loss • Conclusion

  5. 2004 Hurricane Season • 16 Storms • 8 Hurricanes • 4 Hitting Florida • 3 Cross over Volusia County • Charley • Frances • Jeanne • $42 million dollars in damages

  6. Hurricane Charley August 9-14, 2004

  7. Hurricane FrancisAugust 25-September 10, 2004

  8. Hurricane JeanneSeptember 13-27, 2004

  9. Methodology • Acquire Landsat TM 30m data, 1999 and 2004 • Erdas Imagine 8.7 • Define study area using county vector map • Subset imagery • DOQQ for Volusia County 2000, 2004 • Unsupervised classification • Break out mixed clusters • Supervised classification • Majority filter • Final recode for classification map • Accuracy Assessment • Change detection

  10. Study Area

  11. Study Area

  12. Erosion Examples

  13. Erosion Examples

  14. Erosion Examples

  15. Target Class for evaluation Beach, from back shore to foreshore

  16. Accuracy Assessment

  17. Change Detection Ponce Inlet, New Smyrna

  18. Change Detection

  19. Conclusion • Landsat TM data was successful in identifying beach erosion in Volusia County, Florida • Net loss of beach was 1.83 mi2 • Cost to the county, in beach replenishment was $6 – 8 millions for 800,000yd3 in 6 miles of beach • This information can be used by Volusia County Managers in a Decision Support System to determine the most effective area for beach replenishment • In future Remote Sensing technique may be useful for a quick beach erosion assessment

  20. Ground truthing Meet with Volusia County managers to discuss the results Acquire Landsat image for 2005 for continuation of beach erosion study Involve students from Bethune-Cookman College in the studies Completed Collaboration is continued Not yet, need grant or financial support One Physics major student is doing senior research project. Future Plans

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