Pierson-Moskowitz Spectrum Value
One-point PM spectrum S(ω) = α·g²/ω⁵ · exp(−β·(ω_p/ω)⁴). Used for fully-developed seas.
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Formula, assumptions, and limits
| Symbol | Meaning | Unit |
|---|---|---|
| PM constant 8.1e-3 | ||
| PM shape 1.25 | ||
| Peak frequency = 0.879·g/V | rad/s |
Source: Pierson-Moskowitz (1964)
In short
One-point PM spectrum S(\u03c9) = \u03b1\u00b7g\u00b2/\u03c9\u2075 \u00b7 exp(\u2212\u03b2\u00b7(\u03c9_p/\u03c9)\u2074).