PART III: PROTOTYPE DATA 



23. Field mt jsurement data required for model calibrations and verifi- 

 cation vere taken from existing data bases. No new collection e^'forts were 

 undertaken during the course of this study. The following is a :-ummary of the 

 prototype data used in the investigation and its sources. 



Tidal Data 



2^. A hydrau'' ic model study to detprmino effects of Oregon Inlet 

 stabilization by jetties was conducted at WES and reported by Hollyfield, 

 McCoy, and Sea'uergh (1983). Representatives ot the National Ocean Survey 

 (NOS) , U. S. Army Engineer District, Wilmington (SAVJ), and WES lormiilated a 

 data collection program. Field surveys were carried out in tlie spring and 

 summer of 1975. Efforts included collecting tide and current data, primarily 

 in the vicinity of Oregon Inlet, ana prototype hydrography/topography data 

 within the area reproduced in the hydraulic model. The tide data were sub- 

 sequently analyzed for their tidal constituents. Constituent data form allows 

 for isolating the astronomical event and was useu both to force the WIFTI model 

 and for comparison with model results. Tide elevation data outside the Oregon 

 Inlet area were obtained (in constituent form) from NOS. Figure 7 (pag3 24) 

 shows locations of field stations in the offshcre grid region. Since the M„ 

 constituent contains about 90 percent of the tidal energy in the Pamlico Sound 

 area, calibration computations were simplified by considering only an M_ tide. 

 Table 1 delineates the M. amplitude and epoch (relative to Greenwich) for each 

 field station. 



Storm Surg e Data 



25. Two historical storms were modeled in this study: Hurricane Donna 

 in 1960 and the extratropical March 1962 storm. Meteorological data for 

 Hurricane Donna were obtained from NOS. These included a list of storm param- 

 eters, track definition, and surface windfield analysis. Table 2 presents a 

 time variation of these storm parameters. The coincident predicted astro- 

 nomical tide was reconstructed from constituent tidal data (particularly at 

 Capes Fear, Lookout, Hatteras, and Henry) ob':alred from NOS. Comparison 



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