Accession Number : ADA195872

Title :   Tidal Elevations and Currents at Ponce De Leon Inlet, Florida.

Descriptive Note : Final rept. Sep-Nov 83,

Corporate Author : COASTAL ENGINEERING RESEARCH CENTER VICKSBURG MS

Personal Author(s) : Hemsley, J M ; Briggs, Michael J

PDF Url : ADA195872

Report Date : May 1988

Pagination or Media Count : 180

Abstract : Tidal elevation and current data were measured and analyzed at Ponce de Leon Inlet for use in calibrating model studies that will evaluate alternative improvements to the weir jetty system. Data were successfully obtained from four to six Sea Data TDR-2 pressure sensors and 14 Endeco 174 current meters during the period September to November 1983. Quality of the data was excellent with very few spikes or missing points. Hardware-related problems occurred on the TDR for Gage T7 due to flooding. Two of the Endeco gages at sta 2B lost their impellers due to high sediment and current flows and/or fishing activity in the inlet throat. Tidal harmonic analysis of 56 days of National Ocean Survey (NOS) tide data, using Coastal Engineering Research Center's software, verified the accuracy of the program and provided a reference for tidal elevation and current harmonic analysis results. The root mean square (rms) error was 0.11 ft. Constituent amplitudes and local epochs for 10 constituents agreed quite well with NOS's data for the full calendar year of 1974 from Daytona Beach Pier using 37 constituents. Pressure and surface elevation time series and harmonic analysis plots are presented for tidal elevation data collected in Ranges 3 through 6. For the tidal current data, current roses, vector (stick) plots, current velocity magnitude time-series, current direction time-series, and harmonic analysis plots are presented. Temperature data were remarkably consistent between TDR and Endeco gages, showing the same general trends. Conductivity data were recorded by the Endeco current meters and ranged from approximately 30 to 55 mmho/cm. (fr)

Descriptors :   *TIDAL CURRENTS, *INLETS(WATERWAYS), ACCURACY, AMPLITUDE, CONDUCTIVITY, ELEVATION, FISHES, FLORIDA, FLOW, HARMONIC ANALYSIS, IMPELLERS, INLETS, MEAN, MEASURING INSTRUMENTS, MODELS, OCEANS, PATTERNS, PLOTTING, QUALITY, SEDIMENTS, SPIKES, SURFACES, SURVEYS, TEMPERATURE, THROAT, TIDES, TIME SERIES ANALYSIS

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE