# How fast was the fastest tsunami?

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Last September, an earthquake triggered a deadly tsunami in Indonesia. Scientists now have clocked the speed of rupture at a blistering 9,600 miles per hour.

## How fast can a tsunami go?

Tsunami movement

Once a tsunami forms, its speed depends on the depth of the ocean. In the deep ocean, a tsunami can move as fast as a jet plane, over 500 mph, and its wavelength, the distance from crest to crest, may be hundreds of miles.

## Can tsunamis go over 100 mph?

However, the waves slow down as they approach the shallower waters of the shore, which can result in water piling up to heights exceeding 100 feet. …

## How fast was the 1960 tsunami?

The main tsunami crossed the Pacific Ocean at a speed of several hundred km/h and on May 23, 1960 (about 15 hours after the earthquake) a train of 35-foot waves reached the Hawaiian Islands and crashed into Hilo Bay.

## Can you outrun a tsunami?

Yet a myth persists that a person could outrun a tsunami. That’s just not possible, tsunami safety experts told LiveScience, even for Usain Bolt, one of the world’s quickest sprinters. Getting to high ground or high elevation is the only way to survive the monster waves.

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## What is the farthest a tsunami has Travelled?

Tsunami waves can be very long (as much as 60 miles, or 100 kilometers) and be as far as one hour apart. … The Indian Ocean tsunami traveled as much as 3,000 miles (nearly 5,000 kilometers) to Africa, arriving with sufficient force to kill people and destroy property.

## How long did the 2004 tsunami last?

How long did the Indian Ocean tsunami of 2004 last? The Indian Ocean tsunami of 2004 lasted for seven hours and reached out across the Indian Ocean, devastating coastal areas of Indonesia, Sri Lanka, India, Maldives, and Thailand, and as far away as East Africa.

## How tall is a mega tsunami?

States that “mega-tsunamis are defined in the literature as waves that are more than 300 ft (100 m) high, indeed, some tsunami researchers even consider mega-tsunamis to be waves more than a thousand feet (> 300 m) high.”

## Has the US ever had a tsunami?

Large tsunamis have occurred in the United States and will undoubtedly occur again. … The tsunami generated by the 1964 magnitude 9.2 earthquake in the Gulf of Alaska (Prince William Sound) caused damage and loss of life across the Pacific, including Alaska, Hawaii, California, Oregon, and Washington.

## What was the slowest tsunami ever?

Summary: A ‘slow-motion’ earthquake lasting 32 years – the slowest ever recorded – eventually led to the catastrophic 1861 Sumatra earthquake, researchers have found.

## Is a 10.0 earthquake possible?

No, earthquakes of magnitude 10 or larger cannot happen. The magnitude of an earthquake is related to the length of the fault on which it occurs. … The largest earthquake ever recorded was a magnitude 9.5 on May 22, 1960 in Chile on a fault that is almost 1,000 miles long…a “megaquake” in its own right.

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## What would a 10.0 earthquake do?

A magnitude 10 quake would likely cause ground motions for up to an hour, with tsunami hitting while the shaking was still going on, according to the research. Tsunami would continue for several days, causing damage to several Pacific Rim nations.

## Has there ever been a 9 earthquake?

The 1960 Valdivia earthquake (Spanish: Terremoto de Valdivia) or the Great Chilean earthquake (Gran terremoto de Chile) on 22 May 1960 was the most powerful earthquake ever recorded. Various studies have placed it at 9.4–9.6 on the moment magnitude scale.

## Is it safe to be in a pool during a tsunami?

Being in the water (swimming pool or any other water) is no protection from the huge wave of a tsunami (sometimes more than one). You cannot just hold your breath and wait for the wave to pass over you. It will pick you up like it uproots a palm tree and carry you away.

## Can you surf a tsunami?

You can’t surf a tsunami because it doesn’t have a face. … On the contrary, a tsunami wave approaching land is more like a wall of whitewater. It doesn’t stack up cleanly into a breaking wave; only a portion of the wave is able to stack up tall.

## Can you survive a tsunami in a submarine?

Submarines are relatively unaffected by weather or tsunamis when submerged in deep open waters. Once a submarine is deep enough the conditions on the surface are not felt. However if a submarine has to go shallow or to periscope depth then conditions on the surface become a major concern.