Final answer:
Vertical Water Speed is significant in surf analysis for understanding wave formation and can be expected during events like storm surges or significant wave interactions with the seabed.
Step-by-step explanation:
When discussing surf analysis charts, the term Vertical WS likely refers to Vertical Water Speed, a factor that can be observed when analyzing water column data in terms of oceanographic studies or surf forecasting. Vertical water speeds can be expected to be significant in regions of strong wave action or where there is vertical circulation in the ocean due to phenomena like upwelling, which can be brought about by factors such as wind patterns, earth rotation (Coriolis effect), and coastal topography.
In surf analysis, you can expect to see Vertical WS in conditions that include storm surges, significant wave events, or when waves interact with the seabed, causing turbulent kinetic energy to be transmitted downwards. Predicting the vertical movements of water is crucial for surfers, sailors, and researchers as it affects wave formation and behavior. Thus, looking for Vertical WS on surf analysis charts is essential for understanding how incoming swells will transform into the breaking waves surfers ride and for ensuring maritime safety.