The directional distribution of wind-wave energy is an intuitively and demonstrably important aspect of sea state definition in coastal engineering design. Historically, there has been a shortage of high-resolution observations upon which to base engineering guidance. To remedy this, a multiyear series of measurements has been undertaken at the Field Research Facility of the Coastal Engineering Research Center, US Army Engineer Waterways Experiment Station. Cross-spectra of surface-corrected signals from a linear array of nine bottom-mounted pressure sensors have been used in conjunction with an iterative maximum likelihood algorithm to estimate frequency-direction spectra. The array was located in about 8 m of water, approximately 900 m offshore. This report provides an index of and describes a means of access to 1,046 frequency-direction spectral observations obtained from September 1986 August 1987. This period represents the first year of data collection. The data set includes observations from the SUPERDUCK experiment of September and October 1986. In addition to a list of data collection start times is a set of bulk parameters that can be used to characterize the observations. These parameters include characteristic wave height, spectral peak frequency and corresponding peak period, peak wave direction, and directional spread. Time series graphs of these parameters as well as local winds and currents illustrate some of the salient climatology. Observed spectra have been archived on magnetic tape and can be provided to a user on request. This report describes the structure, format, and naming scheme of the data files and lists a FORTRAN program that can be used to read them.


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    Title :

    Index and Bulk Parameters for Frequency-Direction Spectra Measured at CERC Field Research Facility September 1986 to August 1987


    Contributors:

    Published in:

    Publication date :

    1991


    Size :

    3266953


    Type of media :

    Report


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :


    Index and Bulk Parameters for Frequency-Direction Spectra Measured at CERC Field Research Facility, September 1987 to August 1988

    Long, Charles Edward | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 1991

    Free access

    Index and Bulk Parameters for Frequency-Direction Spectra Measured at CERC Field Research Facility, September 1989 to August 1990

    Long, Charles Edward / Smith, Wendy L. | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 1994

    Free access

    Index and Bulk Parameters for Frequency-Direction Spectra Measured at CERC Field Research Facility, September 1993 to August 1993

    Long, Charles Edward / Roughton, Judy H. | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 1994

    Free access

    Index and Bulk Parameters for Frequency-Direction Spectra Measured at CERC Field Research Facility, September 1988 to August 1989

    Long, Charles Edward / Smith, Wendy L. | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 1999

    Free access

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

    Long, Charles Edward / Pemberton, Janna L. | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 1994

    Free access