Tsunami Essay For Students

Tsunami is a Japanese Word meaning very tall tidal or harbor waves. The tsunami that took place around 6.30 a.m. on 26th December, 2006 was caused by a massive under water earthquake near Sumatra in Indonesia.

The earthquake was measured at 8.9 on the Richter scale and it was one of the most severe quakes to have struck the earth in the last forty years. It jolted the ocean floor tremendously. As a result, a huge mass of rising water rushed at a tremendous speed destroying and devastating whatever came in its way.

The Tsunami caused a wide spread damage and destruction to life and property in coastal areas of Indonesia, Malaysia, Maldives,Thailand, Srilanka, India and few other countries of South-East Asia and Coastal Africa.

A chain of waves of 30 to 40 feet height struck and flattened large areas of coastal Andhra Pradesh, Tamil Nadu, Kerala and Andaman and Nicobar islands. The Tsunami is reported to have killed a staggering number of 1,50,000 people in the affected areas. Thousands of people were wounded, washed away and rendered homeless. Property worth crores of rupees was destroyed. Rescue and relief works were taken up on a war footing in the affected areas. Relief materials were sent from home and abroad.

Category: Essays, Paragraphs and Articles

On the morning of January 23, a magnitude 7.9 earthquake struck the Gulf of Alaska some 175 miles southeast of Kodiak, Alaska. The tremors triggered fears of tsunamis throughout the Pacific, but as of 7:35 a.m. U.S. Eastern, the U.S. Tsunami Warning Center has canceled all tsunami watches and warnings.

A tsunami advisory remains in effect for some portions of southern Alaska and the Alaska Peninsula. Observed tsunami waves have not exceeded heights of 2.3 feet (0.7 meters but nevertheless pose dangers. (Read the advisory.)

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.

What Causes a Tsunami?

These awe-inspiring waves are typically caused by large, undersea earthquakes at tectonic plate boundaries. When the ocean floor at a plate boundary rises or falls suddenly, it displaces the water above it and launches the rolling waves that will become a tsunami.

Most tsunamis–about 80 percent–happen within the Pacific Ocean’s “Ring of Fire,” a geologically active area where tectonic shifts make volcanoes and earthquakes common.

Tsunamis may also be caused by underwater landslides or volcanic eruptions. They may even be launched, as they frequently were in Earth’s ancient past, by the impact of a large meteorite plunging into an ocean.

Tsunamis race across the sea at up to 500 miles (805 kilometers) an hour—about as fast as a jet airplane. At that pace, they can cross the entire expanse of the Pacific Ocean in less than a day. And their long wavelengths mean they lose very little energy along the way.

In deep ocean, tsunami waves may appear only a foot or so high. But as they approach shoreline and enter shallower water they slow down and begin to grow in energy and height. The tops of the waves move faster than their bottoms do, which causes them to rise precipitously.

What Happens When It Hits Land

A tsunami’s trough, the low point beneath the wave’s crest, often reaches shore first. When it does, it produces a vacuum effect that sucks coastal water seaward and exposes harbor and sea floors. This retreating of sea water is an important warning sign of a tsunami, because the wave’s crest and its enormous volume of water typically hit shore five minutes or so later. Recognizing this phenomenon can save lives.

A tsunami is usually composed of a series of waves, called a wave train, so its destructive force may be compounded as successive waves reach shore. People experiencing a tsunami should remember that the danger may not have passed with the first wave and should await official word that it is safe to return to vulnerable locations.

Some tsunamis do not appear on shore as massive breaking waves but instead resemble a quickly surging tide that inundates coastal areas.

The best defense against any tsunami is early warning that allows people to seek higher ground. The Pacific Tsunami Warning System, a coalition of 26 nations headquartered in Hawaii, maintains a web of seismic equipment and water level gauges to identify tsunamis at sea. Similar systems are proposed to protect coastal areas worldwide.

One thought on “Tsunami Essay For Students

Leave a Reply

Your email address will not be published. Required fields are marked *