Tsunamis are distinct from normal wind or tide-generated waves in many ways. For one thing, they tend to have a much larger wavelength, a measure from one wave crest to another.

More Articles About Tsunamis: 4. Lituya Bay, Alaska // 490 Feet. ... The landslide remains the largest on record, and the 820-foot tsunami that followed is the third-largest in history.

Hawaii has its own history of mega-tsunamis, most recently about 100,000 years ago. “One block of rock that slid off Oahu is the size of Manhattan,” wrote Becky Oskin in Live Science.

Some of the world’s largest earthquakes and tsunamis have originated from the Cascadia Subduction Zone, a 1,127-kilometer (700-mile) stretch that runs from northern California up to British ...