FINITE SPECTRUM ANALYSES OF WAVE RECORDS

This report shows that the shape of the wave spectrum is sensitive to the precise manner in which the spectrum is computed. A higher degree of frequency separation can be obtained by using a direct Fourier transform and Parseval's theorem than by using the lag product approach first suggested. Frequency resolution is also enhanced by using a suitable data window such as the cosine bell, and by using the longest practical length of record. Wave spectra should not be considered from the outset as representing the linear superpositions of a large number of infinitesimal waves.

• Supplemental Notes:
  • Availability: Pub. in Proceedings of the International Symposium on Ocean Wave Measurement and Analysis, p107-124, ASCE, New Orleans, La., 9-11 Sep 74.
• Corporate Authors:

  Coastal Engineering Research Center

  Vicksburg, MI  United States 
• Authors:
  • Harris, D L
• Publication Date: 1974

Media Info

• Pagination: 19 p.

Subject/Index Terms

• TRT Terms: Electromagnetic spectrum; Ocean waves; Spectrum analysis; Technology; Wave measurement
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00084854
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: CERC-Reprint-6-74
• Files: TRIS
• Created Date: May 19 1975 12:00AM