Exact asymmetric slope distributions in stochastic Gauss–Lagrange ocean waves |
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Authors: | Georg Lindgren |
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Institution: | aMathematical Statistics, Lund University, Box 118, SE-22100 Lund, Sweden |
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Abstract: | The stochastic Lagrange wave model is a realistic alternative to the Gaussian linear wave model, which has been successfully used in ocean engineering for more than half a century. This paper presents exact slope distributions and other characteristic distributions at level crossings for symmetric and asymmetric Lagrange space and time waves. These distributions are given as expectations in a multivariate normal distribution, and they have to be evaluated by simulation or numerical integration. Interesting characteristic variables are: slopes obtained by asynchronous sampling in space or time, slopes in space or time, and horizontal particle velocity, when waves are observed when the water level crosses a predetermined level. |
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Keywords: | Wave steepness Front– back asymmetry Fourier snapshot |
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