how far inland does a tsunami travel when it reaches shore
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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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Japan Earthquake & Tsunami of 2011: Facts and Information Less than an hour after the earthquake, the first of many tsunami waves hit Japan's coastline. The tsunami waves reached run-up heights (how far the wave surges inland above sea level) of up to 128 feet (39 meters) at Miyako city and traveled inland as far as 6 miles (10 km) in Sendai.
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Earthquake and average wave speed? An earthquake on the ocean floor in the Gulf of Alaska produces a tsunami (sometimes incorrectly called a tidal wave) that reaches Hilo, Hawaii, 4,450 km away, in a time interval of 9 h 30 min. Tsunamis have enormous wavelengths (100 to 200 km), and the propagation speed for these waves is shown below ,... show more An earthquake on the ocean floor in the Gulf of Alaska produces a tsunami (sometimes incorrectly called a tidal wave) that reaches Hilo, Hawaii, 4,450 km away, in ...
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Tsunami Facts: How They Form, Warning Signs, and Safety Tips A tsunami may be less than a foot (30 centimeters) in height on the surface of the open ocean, which is why they are not noticed by sailors. But the powerful shock wave of energy travels rapidly through the ocean as fast as a commercial jet. Once a tsunami reaches shallow water near the coast it is slowed down.
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How Does a Tsunami Work? It can spread its water arms 1 mile (1.6 kilometers) or more across—depending on the features found underwater and onshore, which can help squeeze or widen the wave—and reach more than 1,000 feet (300 meters) inland, smashing buildings and hurling boats, cars, boulders, and other objects with ease.
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- If the tsunami is generated from a large earthquake over a large area, its initial wavelength and period will be greater. If the tsunami is caused by a local landslide, both its initial wavelength and period will be shorter. The period of the tsunami waves may range from 5 to 90 minutes.
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- The wave speeds for tsunamis are very high in deep water. The tsunami of December 26, 2004 traveled from near the island of Sumatra to the east coast of Africa in just over seven hours. It was initiated by an earthquake of magnitude 9 off the western coast of northern Sumatra.
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- Top Tips. 1  To escape a tsunami, go as high and as far as you can – ideally to a spot 100 feet above sea level or 2 miles away. 2  Every foot inland or upward may make a difference! 3  If you can see the wave, you are too close for safety.
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FAQ About Tsunamis A tsunami can travel across the open ocean at about 500-miles per hour, the speed of a jet airliner. As the wave approaches land and as the ocean shallows, the wave slows down to about 30 miles-per-hour and grows significantly in height (amplitude).
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How far inland did japan's 2011 tsunami go? The definition of a tsunami is, a long high sea wave caused by an earthquake, submarine landslide, or other disturbance, so, depending on the magni … tude of one of those events occurring, will then determine how far inland it will go.
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Tsunamis A tsunami is a series of ocean waves that sends surges of water, sometimes reaching heights of over 100 feet (30.5 meters), onto land. These walls of water can cause widespread destruction when they crash ashore.
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What would be the safest place during 3 mile high tsunamis hitting every coast on earth. no trolls please? The wave intensity also depends on the magnitude of the originating force. The 3 mile wave could have the potential to travel far inland. The best place to be is far inland away from the sea and on high ground, as high as possible. A mountain or high terrain would be your best bet.
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- Wave velocity is the speed of the wave. Velocities of normal ocean waves are about 90 km/hr while tsunamis have velocities up to 950 km/hr (about as fast as jet airplanes), and thus move much more rapidly across ocean basins. The velocity of any wave is equal to the wavelength divided by the wave period.
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Tsunamis: Facts About Killer Waves 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.
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Journal: News & Comment The shape, slope, and composition of the land itself where the tsunami hit (a cliff would be very different than a gentle shore slope) and how far that shape, slope, and composition reach inland (a steep slope that ends in a wall wouldn't let the tsunami get far; a shallow slope that extends a long way would).
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What Is a Tsunami? On average, a tsunami lasts about 12 minutes--six minutes of run up during which the water may flow inland for a considerable distance, followed by six minutes of drawback as the water recedes. However, it is not uncommon for several tsunamis to hit over a period of several hours.
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- ZetaTalk: How Far Inland. Written April 4, 2010. When the tsunami hits Ireland and the UK, approx what speed will it hit the coast line at, and approx how far in land will the tsunami go as Ireland and the UK will be the first and I am assuming worst hit?
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Disaster Management Information System Shallow-water waves move at a speed that is equal to the square root of the product of the acceleration of gravity (9.8 m/s/s) and the water depth-let's see what this implies: In the Pacific Ocean, where the typical water depth is about 4000 m, a tsunami travels at about 200 m/s, or over 700 km/hr.ote the vastness of the area across which the tsunami travels-Japan, which is over 17,000 km away from the tsunami's source off the coast of Chile, lost 200 lives to this tsunami. Also note how the wave crests bend as the tsunami travels-this is called refraction.
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In 73 articles, indigenous and non-indigenous scholars and On deep oceans it can hit 500 mph. Near the land it slows down to 20 or 30 mph. http://www.publicaffairs.noaa.gov/grounders/tsunamis.html It is … important to note that the 500 mph is simply a theory, there is no method to truly measure the speed of the wave.
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Greater tsunami risk from Southern California quake, study finds “The real idea from this paper is to start a discussion on doing a more comprehensive analysis of this region,” Ryan said. Studying how far tsunami waves could travel inland in California is a fairly new subject in the state. It was only about six years ago that the state published maps of areas that could be flooded by tsunami.
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Past Tsunami Events The largest tsunami impacts have been recorded along the northwest coast of Western Australia: 1  In 1977 a tsunami travelled inland to a point six metres above sea level at Cape Leveque, WA. 2  In 1994 a tsunami travelled 300 metres inland in the Onslow-Exmouth region of WA.
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Tsunami Frequently Asked Questions Tsunamis can occur any time of year, day or night. Top Tips. To escape a tsunami, go as high and as far as you can – ideally to a spot 100 feet above sea level or 2 miles away. Every foot inland or upward may make a difference! If you can see the wave, you are too close for safety. Know the difference! A Tsunami WARNING means a tsunami may have been generated and could be close to your area.
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Tsunami Dates and History A locally generated tsunami may reach a nearby shore in less than ten minutes. There may not be sufficient time for tsunami warning centers, such as the Pacific Tsunami Warning Center, or for local authorities to issue a warning.
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- - Simulations show the initial tsunami wave from the 1700 event reached the coast in 20 to 30 minutes - so time is limited. Geologic history showed waves with this event were as high as 30 feet. So you must get at least that high above sea level.
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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. Seismic waves (sound traveling through … the solid crust of the earth below the ocean floor) move at around 14,000 KM/hr or about 8,300 miles/hr.
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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?