what is the 2nd wave in the 5th wave
The 5th Wave (novel) Second wave: Surf's Up: The Others, realizing that roughly 40 percent of Earth's population lives within 60 miles (97Â km) of coastline, drop enormous rods "twice as tall as the Empire State Building and three times as heavy" (45) onto the Earth's fault lines, causing massive tsunamis that wipe out three billion people.
Wind wave Individual waves in deep water break when the wave steepness—the ratio of the wave height H to the wavelength λ—exceeds about 0.17, so for H > 0.17 λ. In shallow water, with the water depth small compared to the wavelength, the individual waves break when their wave height H is larger than 0.8 times the water depth h, that is H > 0.8 h.[17] Waves can also break if the wind grows strong enough to blow the crest off the base of the wave.