Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/13014
Title: Index and bulk parameters for frequency-direction spectra measured at CERC field research facility
Authors: Long, Charles E. (Charles Edward)
Keywords: Frequency-direction spectra
Wave climate
Wave database
Wind waves
Publisher: Coastal Engineering Research Center (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Miscellaneous paper (U.S. Army Engineer Waterways Experiment Station) ; CERC-91-6.
Description: Miscellaneous paper
Abstract: 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 Observed spectra have been archived on magnetic tape and can be provided to a user on request.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.
Rights: Approved for public release; distribution is unlimited.
URI: http://hdl.handle.net/11681/13014
Appears in Collections:Miscellaneous Paper

Files in This Item:
File Description SizeFormat 
MP-CERC-91-6.pdf3.19 MBAdobe PDFThumbnail
View/Open