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|Title:||ADCIRC : an advanced three-dimensional circulation model for shelves, coasts, and estuaries. Report 4, Hurricane storm surge modeling using large domains|
|Authors:||University of Notre Dame. Department of Civil Engineering and Geological Sciences.|
University of North Carolina at Chapel Hill. Institute of Marine Sciences.
Dredging Research Program (U.S.)
Blain, Cheryl A.
Westerink, Joannes J.
Luettich, Richard A. (Richard Albert), 1957-
Scheffner, Norman W.
Finite element method
Hurricane surge model
Storm surge model
|Publisher:||Coastal Engineering Research Center (U.S.)|
Engineer Research and Development Center (U.S.)
Abstract: This report investigates the use of large domains in modeling hurricane storm surge. The hydrodynamic model used in this study is the ADCIRC-2DDI code, which is based on a two-dimensional, depth-integrated, finite element formulation. Hurricane wind stress and pressure forcing from Hurricane Kate are produced by the HURWIN code, a vertically averaged planetary boundary layer wind model. Storm surge predictions are conducted over three computational domains, which have varying sizes. The smallest domain covers the continental shelf, another domain includes the Gulf of Mexico, and the final domain is quite large and extends into the deep ocean. Domains over the continental shelf and the Gulf of Mexico are shown to be inadequate for modeling hurricane storm surge. On the contrary, a large domain, which includes the Western North Atlantic Ocean, the Caribbean Sea, and the Gulf of Mexico, is optimal for use with storm surge models. The influence of an inverted barometer condition applied at the open boundary is examined for each computational domain. Finally, storm surge simulations resulting from an application of wind, pressure, and tidal forcing over the large domain are compared to measured data. Five tidal constituents are forced both on the interior of the domain and along the open ocean boundaries. Initially, computed tidal elevations are compared with measured tidal data at 77 stations located throughout the domain with excellent results. For the storm surge predictions, an inverted barometer condition is also implemented along the open boundary. The resulting storm surge elevations predicted at eight stations along the Florida coast correlate well with measured storm surge elevations.
|Appears in Collections:||Technical Report|