Accession Number : ADA280455


Title :   Index and Bulk Parameters for Frequency-Direction Spectra Measured at CERC Field Research Facility, September 1991 to August 1992


Descriptive Note : Final rept.


Corporate Author : COASTAL ENGINEERING RESEARCH CENTER VICKSBURG MS


Personal Author(s) : Long, Charles E. ; Pemberton, Janna L.


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA280455


Report Date : MAY 1994


Pagination or Media Count : 116


Abstract : A multiyear series of wind wave frequency-direction spectral measurements has been undertaken at the Field Research Facility of the Coastal Engineering Research Center, U.S. Army Engineer Waterways Experiment Station. Cross-spectra of surface-corrected signals from a spatial array of 15 bottom- mounted pressure sensors have been used in conjunction with an iterative maximum likelihood algorithm to estimate frequency-direction spectra in about 8 m of water, approximately 900 m offshore. This report provides an index of an describes a means of access to 2,779 spectral observations obtained from September 1991 to August 1992. This period represents the sixth year of data collection. In addition to a list of data collection start times, bulk parameters are provided to characterize the observations. Included are characteristic wave height, spectral peak frequency and corresponding peak period, peak wave direction, directional spread, and reflection coefficient. Time series graphs of these parameters, as well as local winds and currents, illustrate some of the salient climatology.


Descriptors :   *OCEAN WAVES , *WIND , *AIR WATER INTERACTIONS , DATA BASES , ALGORITHMS , OCEAN SURFACE , RESEARCH FACILITIES , BATHYMETRY , SIGNALS , COASTAL ENGINEERING , OFFSHORE , WATERWAYS , OCEAN BOTTOM , HEIGHT , CLIMATOLOGY , PRESSURE , SPECTRA , REFLECTION , GRAPHS , MAXIMUM LIKELIHOOD ESTIMATION , FREQUENCY , DATA PROCESSING


Subject Categories : METEOROLOGY
      PHYSICAL AND DYNAMIC OCEANOGRAPHY


Distribution Statement : APPROVED FOR PUBLIC RELEASE