In that 2021 study, the research team suggested that the megaripples, which have an average height of 52 feet (16 meters) and an average wavelength (from one crest of a wave to the next) of 1,970 feet ...

A tsunami is different from normal waves because it has long wavelengths. It carries more destructive power than waves with short wavelengths. A tsunami only 10 centimeters high can sweep you off ...