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Coastal Flooding in Florida’s Big Bend Region with Application to Sea Level Rise Based on Synthetic Storms Analysis

Author(s): Hagen, Scott C.; Peter Bacopoulos


Name of Publisher: Chinese Geoscience Union

Publication Type: Journal Article

Journal Title: Terrestrial, Atmospheric and Oceanic Sciences

Date of Publication: 2012

Reference Information: 23(5):

Extent of Work: pp. 481-500

Keywords: storm surge; waves; floodplain inundation; hurricane scales; climate change

Abstract: Flooding is examined by comparing maximum envelopes of water against the 0.2% (= 1-in-500-year return-period) flooding surface generated as part of revising the Federal Emergency Management Agency’s flood insurance rate maps for Franklin, Wakulla, and Jefferson counties in Florida’s Big Bend Region. The analysis condenses the number of storms to a small fraction of the original 159 used in production. The analysis is performed by assessing which synthetic storms contributed to inundation extent (the extent of inundation into the floodplain), coverage (the overall surface area of the inundated floodplain) and the spatially variable 0.2% flooding surface. The results are interpreted in terms of storm attributes (pressure deficit, radius to maximum winds, translation speed, storm heading, and landfall location) and the physical processes occurring within the natural system (storms surge and waves); both are contextualized against existing and new hurricane scales. The approach identifies what types of storms and storm attributes lead to what types of inundation, as measured in terms of extent and coverage, in Florida’s Big Bend Region and provides a basis in the identification of a select subset of synthetic storms for studying the impact of sea level rise. The sea level rise application provides a clear contrast between a dynamic approach versus that of a static approach.

Availability: Abstract available from publisher

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