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2/3 of Original Duration (1.5x Faster Forward Speed)

M ODELING OF H URRICANE D URATION ON S URGE H EIGHT IN T HE P ONTCHARTRAIN E STUARY U SING F INITE V OLUME C OASTAL O CEAN M ODEL. Sina Amini, Grecia Teran, Joao Pereira, Tshering Gurung, Alex McCorquodale , Ehab Meselhe, Tracy Chen, Jim Chen.

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2/3 of Original Duration (1.5x Faster Forward Speed)

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  1. MODELING OF HURRICANE DURATION ON SURGE HEIGHT IN THE PONTCHARTRAIN ESTUARY USING FINITE VOLUME COASTAL OCEAN MODEL Sina Amini, Grecia Teran, Joao Pereira, Tshering Gurung, Alex McCorquodale, Ehab Meselhe, Tracy Chen, Jim Chen University of New Orleans, FMI Center for Environmental Modeling, 2045 Lakeshore Drive Suite 318, New Orleans, Louisiana, 70148, U.S.A Abstract: Simulation Paths: FVCOM Pontchartrain Estuary DELFT 3D Gulf of Mexico This poster demonstrates the use of the SIMULOCEAN interface to conduct an experiment to determine the effect of storm duration (Track Speed) on the storm surge in an estuary. Hurricane Isaac in the Pontchartrain Estuary is used as a test case. Forward storm speed (VF) were changed from 1 to 3 times that of Isaac. The surge heights in Lakes Maurepas and Pontchartrain were found to vary by Hmax(1-e-k/VF) where k is a constant and Hmaxis the maximum local surge related to a specific category and storm track. Boundary Conditions Experiments: Boundary Conditions 2/3 of Original Duration (1.5x Faster Forward Speed) FVCOM DELFT 3D Original Duration 1/3 of Original Duration (3x Faster Forward Speed) Current Path Future Path 1/2 of Original Duration (2x Faster Forward Speed) Results: References: Conclusions: • Storm duration is a major factor in the flooding at the western portion of the Estuary during Hurricane Isaac • The surge response to duration is initially linear; however after a certain duration the rate of surge increase diminishes. • After a certain duration, the storm surge will asymptotically reach a maximum value for the particular category and track. Retana, Angel Gabriel, (2008). "Salinity Transport in a Finite-Volume Sigma-Layer Three-Dimensional Model“, University of New Orleans Dissertations. Paper 880. pp 204 United States Army Corp of Engineers, (2013). “Hurricane Isaac with and without 2012 100-year HSDRRS Evaluation” Final Report February 2013. pp 230. Chen,Changsheng; Beardsley, Robert C and Cowles, Geoffrey, (2006) “An Unstructured Grid, Finite-Volume Coastal Ocean Model FVCOM User Manual” University of Massachusetts-Dartmouth, SMAST/UMASSD-06-0602. pp 315. Acknowledgements: • National Science Foundation for funding the research • Dr. Ioannis Georgiou, Dr. Gabriel Retana, Dr. Germana Peggion, and Mr. Edward Holmberg • Louisiana Optical Network Initiative for computational recourses • Dr. Changsheng Chen and FVCOM support group Contacts: S. Amini G. Teran T. Gurung J. F. Pereira J. A. McCorquodale(PI) samini1@uno.edugterango@uno.eduttgurung@uno.edujpereira@thewaterinstitute.orgj mccorqu@uno.edu UNIVERSITY OF NEW ORLEANS, NGCHC CI Strategy 2: Community Modeling Framework

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