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      A Tsunami Ball Approach to Storm Surge and Inundation: Application to Hurricane Katrina, 2005

      International Journal of Geophysics
      Hindawi Limited

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          Abstract

          Most analyses of storm surge and inundation solve equations of continuity and momentum on fixed finite-difference/finite-element meshes. I develop a completely new approach that uses a momentum equation to accelerate bits or balls of water over variable depth topography. The thickness of the water column at any point equals the volume density of balls there. In addition to being more intuitive than traditional methods, the tsunami ball approach has several advantages. (a) By tracking water balls of fixed volume, the continuity equation is satisfied automatically and the advection term in the momentum equation becomes unnecessary. (b) The procedure is meshless in the finite-difference/finite-element sense. (c) Tsunami balls care little if they find themselves in the ocean or inundating land. (d) Tsunami ball calculations of storm surge can be done on a laptop computer. I demonstrate and calibrate the method by simulating storm surge and inundation around New Orleans, Louisiana caused by Hurricane Katrina in 2005 and by comparing model predictions with field observations. To illustrate the flexibility of the tsunami ball technique, I run two “What If” hurricane scenarios—Katrina over Savannah, Georgia and Katrina over Cape Cod, Massachusetts.

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          An Analytic Model of the Wind and Pressure Profiles in Hurricanes

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            Review of Drag Coefficients over Oceans and Continents

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              Hurricane Katrina storm surge distribution and field observations on the Mississippi Barrier Islands

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                Author and article information

                Journal
                International Journal of Geophysics
                International Journal of Geophysics
                Hindawi Limited
                1687-885X
                1687-8868
                2009
                2009
                : 2009
                :
                : 1-13
                Article
                10.1155/2009/324707
                c671a223-6f4d-43a8-b7e3-c899e871db4e
                © 2009

                http://creativecommons.org/licenses/by/3.0/

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