how tall is a dangerous tsunami
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Tsunami Hazards Some tsunamis will have a surge in front of them as they approach land. These surges can be very damaging and dangerous. Notice a landslide that falls or slides into the ocean, a large lake, or a river. EVACUATE IMMEDIATELY! if you notice any of these signs or hear a tsunami warning. Tsunami evacuation. Tsunami waves can be 30–100 feet tall or more. If you cannot evacuate to higher ground, go as far inland as possible. If there is a large earthquake, roads and bridges may be damaged.
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The biggest tsunami recorded was 1,720 feet tall and chances are good it will happen again The biggest tsunami recorded was 1,720 feet tall and chances are good it will happen again. The tsunami that hit Japan in March 2011. (Reuters/Miyako City Office/Handout) Fifty years ago this week, the Great Alaska Earthquake ravaged the Pacific Northwest, killing more than 100 people. Nine-tenths of those weren’t caused by the earthquake, though, but by a series of tsunamis that pummeled the coast, one of which towered 219 feet (66 meters) high.
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What is a Tsunami? How fast do tsunami waves travel? In the open ocean, tsunami waves travel at 600kph to 700kph. In the deep ocean, waves from a large tsunami may be as little as 60cm high. They pass ships unnoticed. As they encounter shallow water, they slow down to about 30kph and increase in height. How far inland can a tsunami go? In low-lying coastal areas they can travel a long way inland. In parts of Thailand, the tsunami went 3 km inland destroying almost everything in its path. In Banda Aceh, the tsunami surged 6km inland. Why does the seawater recede a long way out, sometimes hundreds of metres, before coming back in as a tsunami?
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Is a tsunami actually a huge wave? Major tsunamis are indeed huge, but they are huge not in wave height but in volume displaced. In mid-ocean a tsunami may be only a few feet tall, but that is spread out over miles and miles in every direction. And out in mid-ocean that huge wave moves as fast as a jet airliner.
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- The earthquake giving rise to the tsunami occurred at 6,000 feet below sea level 80 miles from northern Japan and 240 miles from Tokyo.
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Tsunamis: Facts About Killer Waves  A tsunami is not a single wave but a series of waves, also known as a wave train. The first wave in a tsunami is not necessarily the most destructive. Tsunamis are not tidal waves. Tsunami waves can be very long (as much as 60 miles, or 100 kilometers) and be as far as one hour apart. They are able to cross entire oceans without great loss of energy.A tsunami is not a single wave but a series of waves, also known as a wave train. The first wave in a tsunami is not necessarily the most destructive. Tsunamis are not tidal waves.
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How high can tsunami waves get? Tsunamis range in size from inches to over a hundred feet. In deep water (greater than 600 feet/180 meters), tsunamis are rarely over 3 feet (1 meter) and will not be noticed by ships due to their long period (time between crests). As tsunamis propagate into shallow water, the wave height can increase by over 10 times.Tsunami heights vary greatly along a coast. As a tsunami leaves the deep water of the open ocean and travels into the shallower water near the coast, it transforms.
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History's Biggest Tsunamis May 22, 1960: The largest recorded earthquake, magnitude 8.6 in Chile, created a tsunami that hit the Chilean coast within 15 minutes. The surge, up to 75 feet (25 meters) high, killed an estimated 1,500 people in Chile and Hawaii.iew full size image. Some of the biggest, most destructive and deadliest tsunamis on record: 8,000 years ago: A volcano caused an avalanche in Sicily 8,000 years ago that crashed into the sea at 200 mph, triggering a devastating tsunami that spread across the entire Mediterranean Sea.
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What Damage Do Tsunamis Cause? The Japanese word tsunami means big wave, and it's the preferred way to refer to the phenomena that used to be known as tidal waves. Tsunamis don't have much to do with ocean tides -- they are created by seismic events, such as earthquakes and landslides on the ocean floor.any tsunamis are too small to notice, but some can have a leading wave as tall as 30 meters or more. As powerful as a wave this size is, however, it's the mass of water behind it that is responsible for most of the physical destruction.
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- First, the quakes have to be sufficiently large. Noticeable tsunamis require earthquakes of about magnitude seven or larger and widely-damaging tsunamis usually require earthquake magnitudes of at least eight or greater. But whereas large-magnitude events are necessary, they alone are not sufficient to cause a tsunami.
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What would be the safest place during 3 mile high tsunamis hitting every coast on earth. no trolls please? Best Answer: Several hundred miles inland. Either that, or on a boat on the open ocean far away from land. Tsunamis are only dangerous when they hit the coast. First off, researchers have found evidence of what they think might be the largest tsunami in the last 3,300 years, and that was 300 ft.
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- Wave heights of 15 m (50 ft) at that site suggest that the tsunami waves may have been unusually high, 15 to 30 m, along the entire 100-km stretch of coast from Kreung Sabe to the northwest tip of the island.
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Earthquakes - 2001-2015 Next, it will show only those earthquakes greater than magnitude 6.5, the smallest earthquake size known to make a tsunami. Finally it will only show those earthquakes with magnitudes of magnitude 8.0 or larger, the great earthquakes most likely to pose a tsunami threat when they occur under the ocean or near a coastline and when they are shallow within the earth (less than 100 km or 60 mi. deep).
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World's Tallest Tsunami Home » Records » Tallest Tsunami. World's Tallest Tsunami A tsunami with a record run-up height of 1720 feet occurred in Lituya Bay, Alaska On the night of July 9, 1958, an earthquake along the Fairweather Fault in the Alaska Panhandle loosened about 40 million cubic yards (30.6 million cubic meters) of rock high above the northeastern shore of Lituya Bay.
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Tsunami Hazards A tsunami is a series of waves or surges most commonly caused by an earthquake beneath the sea floor. Tsunamis can cause great loss of life and property damage in coastal areas. Very large tsunamis can cause damage to coastal regions thousands of miles away from the earthquake that caused them.OUNT how long the earthquake lasts. If you feel more than 20 seconds of very strong ground shaking and are in a tsunami hazard zone, evacuate as soon as it is safe to do so. If you are on the beach or in a harbor and feel an earthquake-no matter how small-immediately move inland or to high ground. GO ON FOOT.
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- You cannot define the strongest tsunami, since tsunami's are the  result of earthquakes which have their own ranking. You can however  rank the biggest tsunami's, the bigges … t tsunami ever recorded  happened in 1958 in Lituya Bay, Alaska. The wave was approximately  1720 feet tall.ou cannot define the strongest tsunami, since tsunami's are the  result of earthquakes which have their own ranking. You can however  rank the biggest tsunami's, the bigges … t tsunami ever recorded  happened in 1958 in Lituya Bay, Alaska. The wave was approximately  1720 feet tall.
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Chapter 11: Earthquakes Tsunami are only serious threats to coastal areas near an earthquake epicenter because the waves have lost most of their energy after moving across 100 miles of open water.
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What Damage Do Tsunamis Cause? This tsunami, caused by a massive earthquake that measured 9.0 on the Richter scale, reached a maximum height of 40.5 meters (133 feet), traveled as much as 10 kilometers (6.2 miles) inland and was responsible for 20,000 deaths, as well as the widespread release of radiation.any tsunamis are too small to notice, but some can have a leading wave as tall as 30 meters or more. As powerful as a wave this size is, however, it's the mass of water behind it that is responsible for most of the physical destruction.
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- Where are some safe places on Earth to take refuge if a giant tsunami were to hit? Can you believe how many people are waiting for the Tsunami to hit like fools instead of going to a safer->? If a tsunami 2 miles high hit the coast how far inland will it go?
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- In the open ocean tsunamis may appear very small with a height of less than 1 meter (3 feet). Tsunamis will sometimes go undetected until they approach shallow waters along a coast. These waves have a very large wavelength (up to several hundred miles) that is a function of the depth of the water where they were formed.
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- A: With wave speeds that can reach as much as 435 miles per hour, a tsunami can travel as far inland as 10 miles, depending on the slope and the shape of the shoreline that it is traveling across. Ships...
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What is a Tsunami? In low-lying coastal areas they can travel a long way inland. In parts of Thailand, the tsunami went 3 km inland destroying almost everything in its path. In Banda Aceh, the tsunami surged 6km inland.
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Japan tsunami is small compared to five of world's biggest tsunamis World Global Issues. A tsunami triggered by a 8.9-magnitude earthquake swamped Japan 's northeast coast Friday, picking up cars, ships and houses as it surged as much as three miles inland. The wave generated by the quake, whose epicenter was 80 miles offshore of Sendai, was as high as 30 feet in some spots. There is no official death toll yet, but Japanese officials reported that as many as 300 people have been killed in the city of Sendai alone.
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Tsunami As they reach the shallow waters of the coast, the waves slow down and the water can pile up into a wall of destruction tens of meters (30 ft) or more in height. The effect can be amplified where a bay, harbor or lagoon funnels the wave as it moves inland. Large tsunamis have been known to rise over 30 meters (100 ft).
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The Deadliest Tsunami in History? A tsunami is a series of waves, and the first wave may not be the most dangerous. A tsunami wave train may come as surges five minutes to an hour apart. The cycle may be marked by repeated retreat and advance of the ocean.Some people did not know this on December 26. tsunami is a series of waves, and the first wave may not be the most dangerous. A tsunami wave train may come as surges five minutes to an hour apart. The cycle may be marked by repeated retreat and advance of the ocean.
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Tsunami Facts: How They Form, Warning Signs, and Safety Tips Most tsunamis cause the sea to rise no more than 10 feet (3 meters). The Indian Ocean tsunami caused waves as high as 30 feet (9 meters) in some places, according to news reports. In other places witnesses described a rapid surging of the ocean. Flooding can extend inland by a thousand feet (300 meters) or more.