1. I generally use a sine-wave shape to vary the alpha over time. 2. This will mean there is not a particular wave shape . 3. Their purpose is to change the wave shape by limiting the size for protection. 4. The wave shape for a given wave speed is unique. 5. Other wave shapes require a different calibration factor to relate RMS and average value. 6. Wavelength is the length of the repeating wave shape . 7. Other surf breaks may experience the opposite effect and have better wave shape during high tide. 8. These include wave shape , pitch, tempo, and filtering. 9. 'Multiform'simply describes the variable P wave shapes and is an observation,'multifocal'is an inference about the underlying cause. 10. The lagoon level has a similar sinusoidal wave shape as the tide but reaches its peak slightly later.