what determines the speed of a tsunami
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- The deeper the water, the greater the speed of tsunami waves will be. For example, at the deepest ocean depths the tsunami wave speed will be as much as 800 km/h, about the same as that of a jet aircraft. Since the average depth of the Pacific ocean is 4000 m (14,000 feet) , tsunami wave speed will average about 200 m/s or over 700 km/h (500 mph).
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- 1 Working together to sustain energy. 2  Wave speed. 3  The speed of a swell or a wave train can be calculated by multiplying the swell period times 1.5. 4  For example, a swell or a wave train with a period of 20 seconds will be traveling at 30 knots in deep water.
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Tsunami Frequently Asked Questions The most common cause of tsunamis is an undersea earthquake that results in a sudden rise or fall of a section of the earth's crust under or near the ocean. This earthquake creates an explosive vertical motion that can displace the overlying water column, creating a rise or fall in the level of the ocean above. This rise or fall in sea level is the initial impulse that generates a tsunami wave. What type of earthquake generates a tsunami?
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Tsunamis: the effects The effects of a tsunami depend on the characteristics of the seismic event that generated the tsunami, the distance from its point of origin, its size (magnitude) and, at last, the configuration of the bathymetry (that is the depth of water in oceans) along the coast that the tsunami is approaching.
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Tsunamis: the effects The effects of a tsunami depend on the characteristics of the seismic event that generated the tsunami, the distance from its point of origin, its size (magnitude) and, at last, the configuration of the bathymetry (that is the depth of water in oceans) along the coast that the tsunami is approaching.hey are very often too far away from land or they are too small to have any effect when they hit the shore. When a small tsunami comes to the shoreline it is often seen as a strong and fast-moving tide. Tsunamis have long periods and can overcome obstacles such as gulfs, bays and islands.
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How Tsunamis Work Other waves can follow anywhere from five to 90 minutes after the initial strike. The tsunami wave train, after traveling as a series of waves over a long distance, crashes into the shore. Tsunamis typically result in staggering body counts. This is especially true when they strike without 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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How Rogue Waves Work So, unlike normal waves that are caused by wind forces, the driving energy of a tsunami moves through the water, not on top of it. Therefore, as the tsunami travels through deep water -- at up to 500 or 600 miles per hour -- it's barely evident above water.
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- Fort Ross Windmill-The first windmill built in California Fort Ross Windmill on the cover of Old Mill News Fort Ross Windmill made the cover of the 40th anniversary issue of Old Mill News, the publication of the Society for the Preservation of Old Mills (SPOOM).ort Ross Windmill-The first windmill built in California Fort Ross Windmill on the cover of Old Mill News Fort Ross Windmill made the cover of the 40th anniversary issue of Old Mill News, the publication of the Society for the Preservation of Old Mills (SPOOM).
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Tsunami Frequently Asked Questions A tsunami is a 'series' of waves. A tsunami generally consists of a series of waves. The amount of time between successive waves is known as the wave period. Waves can be a few minutes or over two hours apart.
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How do seismograms recorded during earthquakes help scientists learn about the composition on earth? The speed of seismic waves depends on the density of the material the seismic wave is traveling in. We know, for example, that the core of Earth is liquid, because S waves do not travel through the center of Earth.
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- A tsunami is a very long-wavelength wave of water that is generated by sudden displacement of the seafloor or disruption of any body of standing water. Tsunami are sometimes called seismic sea waves, although they can be generated by mechanisms other than earthquakes. Wave velocity is the speed of the wave. 2  Velocities of normal ocean waves are about 90 km/hr while tsunami have velocities up to 950 km/hr (about as fast as jet airplanes), and thus move much more rapidly across ocean basins. 3  The velocity of any wave is equal to the wavelength divided by the wave period.
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Tsunami 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. The wave speed depends upon wavelength and the depth of the water for tsunamis at sea.
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Chapter 6: Tsunamis Now once a tsunami is generated, it will travel outward in a circular radius from the tsunami epicenter at speeds of 500 mph! But the height of each wave crest in the deep ocean is only 2-3 feet, thus large ships never feel tsunamis in the deep ocean. It's important to stop here and briefly discuss the physics of energy traveling through water. First, a wave of water is called a wave-that was easy!
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The Deadliest Tsunami in History? Once a tsunami reaches shallow water near the coast it is slowed down. The top of the wave moves faster than the bottom, causing the sea to rise dramatically. The Indian Ocean tsunami caused waves as high as 50 feet (15 meters) in some places, according to news reports.
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What is a Tsunami? 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.n 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.
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- I heard it was at least 500 mph while it was happening. Another Answer: 500 MPH is the commonly accepted speed of the energy wave in a tsunami in the open ocean. In this state … , it typically only has an amplitude of a couple of feet. Most boats in the ocean will not even notice a tsunami as it goes past them. As it approachs land, however, it slows down and gains amplitude. This change depends on the topography of the ocean floor, but a typical approach speed is about 50 MPH with an amplitude closer to 30 to 60 feet, depending on the energy.
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- 1 Wave velocity is the speed of the wave. 2  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. 3  The velocity of any wave is equal to the wavelength divided by the wave period.
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Tsunami Facts and Information where g is the acceleration due to gravity (= 9.8 m/s2) and H is the depth of water. In the deep ocean, the typical water depth is around 4000 m, so a tsunami will therefore travel at around 200 m/s, or more than 700 km/h. For tsunamis that are generated by underwater earthquakes, the amplitude of the tsunami is determined by the amount by which the sea-floor is displaced.
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- A tsunami is caused by any large displacement of the sea level, and a tidal wave is caused by the gravity of the moon and the sun. The wavelengths of a tsunami differ from 5 minutes to an hour, and the wavelengths of a tidal wave differ from 12-24 hours.
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Tsunami Geology - What Causes a Tsunami? What causes a tsunami?... A tsunami is a large ocean wave that is caused by sudden motion on the ocean floor. This sudden motion could be an earthquake, a powerful volcanic eruption, or an underwater landslide. The impact of a large meteorite could also cause a tsunami.
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Tsunami Questions A seismograph is an instrument used for recording the intensity and duration of an earthquake. Click Here to calculate the strength of earthquakes! What is a tsunami? A tsunami is a large ocean wave usually caused by an underwater earthquake or a volcanic explosion. Tsunamis are NOT tidal waves. Tidal waves are caused by the forces of the moon, sun, and planets upon the tides, as well as the wind as it moves over the water.
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- Different kinds of events can produce a tsunami. The least probable, but still possible, cause is the impact of an asteroid or a meteorite in the sea, while the more frequent causes are underwater disturbances: a volcanic collapse, a landslide or an earthquake. Earthquakes can be generated by movements along fault zones associated with plate boundaries.
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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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FAQ Tsunami ('soo-nar-me') is a Japanese word; 'tsu' meaning harbour and 'nami' meaning wave. Tsunamis are sometimes incorrectly called tidal waves but have nothing to do with tides. Tsunamis can travel up to 950 kilometres per hour - as fast as a passenger jet! Tsunami waves move outwards, away from their source. One or more waves can be created per event.