Tsunami is a series of waves caused by earthquakes or undersea volcanic eruptions. The most common cause is a seafloor earthquake. 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. Other triggers are undersea landslides, undersea volcanic eruptions, and meteorite impact. Out in the depths of the ocean, tsunami waves do not dramatically increase in height. As a tsunami approaches a coastline, though, things begin to change dramatically. As it approaches shallow waters, an effect known as wave shoaling compresses and slows the wave to below 50 miles per hour.
How are tsunamis formed?
Tsunamis arise from the sudden displacement of gigantic water masses due to earthquakes on the seabed. A tsunami is a series of waves generated in an ocean or another body of water by a disturbance such as an earthquake, landslide, volcanic eruption, or meteorite impact. Undersea earthquakes, which typically occur at boundaries between Earth’s tectonic plates, cause the water above to be moved up or down. Tsunamis usually begin with an earthquake under or near the ocean. They can also be caused by volcanic eruptions, nuclear explosions and in very rare cases, by meteors hitting the ocean’s surface. The most common type is caused by earthquakes. A tsunami alert has been issued after a magnitude 7.9 earthquake struck off the coast of Alaska. Warnings are in place for the coasts of Alaska, British Columbia, and most of the US west coast remains on high alert.
Effects of the tsunami:
The effects of a tsunami are devastating. They are one of the world’s worst natural disasters that can hit a country. Tsunami damage is first caused by the immense force of the tidal wave hitting the shoreline. The effects of a tsunami on a coastline can range from unnoticeable to devastating. … However, when tsunami waves become extremely large in height, they savagely attack coastlines, causing devastating property damage and loss of life. Tsunami damage is first caused by the immense force of the tidal wave hitting the shoreline. Tsunami flooding then continues to cause damage for several more weeks. A tsunami is a powerful series of waves that result due to an abrupt disturbance, such as an earthquake. Tsunamis are giant waves caused by underwater earthquakes or volcanic eruptions. When a tsunami is triggered by such an event, the wave can move at great speeds underwater but result in a very small wave. The majority of deaths associated with tsunamis are related to drownings, but traumatic injuries are also a primary concern. Injuries such as broken limbs and head injuries are caused by the physical impact of people being washed into debris such as houses, trees, and other stationary items.
Facts of the tsunami:
- Only on few occasions, a tsunami is caused by a giant meteor in the ocean.
- An underwater earthquake, a volcano eruption or a landslide mostly causes a tsunami.
- Tsunami waves are larger in 100 feet
- About 80% of the tsunamis occur in the Pacific ring of fire.
- Tsunami is also commonly known as killer wants.
- A tsunami can be less than 30 centimeters in height an can pass of unnoticed.