Answered: 13. What do profiles A and B suggest…

Applications and Investigations in Earth Science (9th Edition)

9th Edition

ISBN:9780134746241

Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Chapter1: The Study Of Minerals

Section: Chapter Questions

Problem 1LR

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Transcribed Image Text:To protect the city from future storms, the U.S. Army Corps of Engineers built a 17-foot-high seawall, raised the level of the island behind it 9 feet by using sand from the mainland, and later raised the seawall to 21 feet. The seawall protects only the northeastern third of the island. On August 18, 1983, Hurricane Alicia crossed Galveston Island. Although Alicia was not the strongest storm to strike Galveston since 1900, it was the most destructive in terms of property damage. Question Set 2: Natural Shoreline Change, Galveston, Texas The graphs above show surveyed profiles at two locations, A and B, along the unprotected beach as shown in map of Galveston Island. At each location, the February, 1980, prehurricane profile is shown, as are the profiles immediately following the storm in August, 1983, and the profile a year later in August, 1984. 11. Inspect the graphs and describe how the storm altered the pre-storm profiles. Profile B 12. Again, by inspection of the graphs, describe the nature of the changes in the beaches between the hurricane, August 1983, and a survey a year later, August, 1984. 13. What do profiles A and B suggest concerning recovery time? For the seaward section of the beach? a. b. For the frontal dune? 4 4

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