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| | Hurricane Ivan Impact Studies (Site not responding. Last check: 2007-10-29) |
 | | On Friday September 17, 2004, scientists from the U.S. Geological Survey (USGS) conducted an aerial photographic survey of the barrier islands in Alabama and Florida that were impacted by Hurricane Ivan. |
 | | The barrier islands exposed to Ivan's strongest winds, for example, the communities of Gulf Shores and Orange Beach, AL, are, in places, low lying, their dunes rising up only several meters, which is insufficient to have contained Ivan's storm surge. |
 | | Compare the pilings in the pre and post-photos of the house adjacent to the multi-story structure to determine the scale of vertical erosion of the dune. |
| coastal.er.usgs.gov /hurricanes/ivan/photos (444 words) |
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