How Do You Know A Tsunami Is Coming?
A tsunami is a series of waves which are known as the wave rain. Experts say that the first wave of tsunamis isn’t the most destructive, but it’s totally dangerous because it can last long. And contrary to what others think, it’s not a simple tidal wave because it can be generated by a giant meteor impact in the ocean.
How do you know a tsunami is coming? They say that you’ll know a tsunami may occur after an earthquake. But this study isn’t always true because some earthquakes don’t cause a tsunami. And scientists use a buoy to determine if a tsunami might hit the specific area after the earthquake.
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As you read on, I will explain the simple signs that can help you tell that a tsunami is coming. I will also list some simple helpful tips that you can follow during a tsunami.
Detecting A Tsunami
To help scientists identify and predict a tsunami, they look at the size and the type of water earthquake that precedes it. However, this information isn’t always helpful and accurate because a tsunami can arrive within minutes after an earthquake triggered it.
Not all earthquakes create tsunamis. It is what most scientists would like to tell the people. That’s when a special open-ocean tsunami buoy can help.
It sends information to tsunami centers like in Alaska and Hawaii.
Scientists or authorities also educate people who reside in coastal areas where earthquakes are prone to. In the United States, there is a National Oceanic and Atmospheric Administration responsible for reporting tsunamis.
And when they find out that an earthquake has triggered the tsunami, they will release a warning system to the public through news outlets.
Facts About A Tsunami
Here are some of the facts about a tsunami that scientists have discovered:
- A tsunami is fast as a commercial jet, that’s one fact that scientists would like everybody to know. Because where the ocean is deep, tsunamis can even travel unnoticed on the surface with a speed of up to 500 miles per hour. Or 800 kilometers an hour and can cross the ocean in a day or less. Scientists can calculate the tsunamis arrival times in different parts of the world based on their knowledge of water depths.
- A Tsunami could be less than 30 centimeters in height on the surface of an open ocean. That’s why sailors can’t notice it, but their shock travels rapidly through the ocean.
- When it reaches the shallow part of the water near the coast, that’s when it slows down.
- The top waves move faster than the bottom. That is why there’s a dramatic rise to the sea.
- Scientists said that some natural features like the reefs, bays, undersea formations and river entrances might dissipate the tsunami’s energy.
- Some tsunamis cause the sea to rise vertically but for a few inches or feet only.
- In other places, tsunamis surge vertically as high as 100 feet or 3 meters.
- And most tsunamis cause the sea to rise no more than 10 feet or 3 meters.
To conclude, not all earthquakes can cause a tsunami because it will always depend on how strong the earthquake is. But, scientists believe that those places that are often experiencing an Earthquake are prone to a tsunami, especially those who live nearby the coast. We also learn that tsunamis aren’t noticeable to sailors because it only measures not less than 30 centimeters.