Time Series Analysis Applied to Data from a Single Ocean Wave Gauge.
JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB
Pagination or Media Count:
A method has been developed to analyze the time record of the sea surface elevation that is obtained from a single wave gauge at a fixed location. The method includes the calculation of sea surface amplitude and wave height probability densities, the significant wave height, the zero-crossing wave period, and the elevation power spectral density and autocorrelation function. The ocean wave dispersion relation is used to calculate the sea surface elevation, slope, and curvature power spectral densities as functions of wave number. In addition, the data record is tested for stationarity and normality. It should be noted that this analysis method is applicable to any data in the form of a time series. In the most general case the amplitude probability density, the autocorrelation function, and the power spectral density of any time series may be calculated. Particular mathematical techniques were used to implement this analysis method and a modular PLI computer program was written to execute these techniques on an IBM 36091 computer. The use of this computer program is described in the Appendixes. Author
- Physical and Dynamic Oceanography
- Numerical Mathematics