How is the height of a wave measured?

The height of a wave is measured from the crest to the trough. This measurement captures the full vertical distance between the highest point of the wave (the crest) and the lowest point (the trough). By measuring this span, you gain a comprehensive understanding of the wave's size and energy potential, which are critical factors in navigation, marine operations, and understanding sea conditions.

Measuring from the waterline to the crest would only provide the height above the average water level, which does not account for the lowest point of the wave and could give a misleading representation of wave size. Similarly, measuring from the trough to the base does not provide the full scope of the wave's vertical extent. The option that describes measurement from the wave origin to the peak is not standard for defining wave height and can also lead to inconsistency in communication regarding wave characteristics. Thus, measuring the distance from crest to trough offers the most accurate and commonly accepted method for determining wave height.