20 miles per hour
The largest recorded tsunami was a wave 1720 feet tall in Lituya Bay, Alaska.
As a tsunami wave approaches the shore, its speed decreases due to the wave energy being compressed into a smaller space. This leads to an increase in wave height and impact force when the tsunami hits the coastline.
Yes the speed of a wave does depend on the source.
The largest tsunami wave of around 100 meters was formed in Lituya Bay, Alaska, on July 9, 1958. This mega-tsunami was triggered by a massive landslide into the bay and caused widespread destruction along the coast.
The rogue wave that overran an island in Alaska is known as the "Lituya Bay megatsunami." It occurred in 1958 when an earthquake triggered a landslide into the bay, creating a wave that reached a height of 1,720 feet (524 meters) and completely wiped out vegetation on the island.
800 kmh
50,000 people per hour.
The highest recorded tsunami was the 1958 Lituya Bay megatsunami in Alaska, with a wave height of 1,720 feet (524 meters). This tsunami was triggered by a massive landslide into the bay, causing the towering wave.
The wave would slow down as it approaches the shore.
Huge.
23 mph
The biggest tsunami on record occurred in 1958 in Lituya Bay, Alaska, with a wave height of approximately 1,720 feet (524 meters).