Mega Tsunami: Wave of Destruction - SMS Tsunami …
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is an extremely rare and destructive phenomenon that strikes the world every few thousand years. Unfortunately, as seen in the documentary above, there is a concrete possibility that it will occur again in the near future. A mega-tsunami has almost unlimited power to cause utter destruction and there's nothing we can do to stop it. Even the most powerful waves, the tidal waves known to science by their Japanese name Tsunami, cannot create such destruction.
Wave of Destruction: Asian Tsunami Disaster - Live Science
Huge earthquake-induced rockslides next to bodies of water can generate mega-tsunamis since the massive amount of water displacement increases the wave size more than a submarine earthquake. Luckily, huge landslides and the mega-tsunamis that they can generate are extremely rare. In most cases, tsunamis caused by rockslides, unlike the ocean-wide tsunamis caused by some underwater earthquakes, dissipate quickly and rarely affect coastlines distant from the source due to the small area of sea affected. However, a massive landslide can give rise to much larger local shock waves (solitons = solitary waves that can travel for long distances without changing their shape or losing energy).
Annie Lennox - Official Website
Over the last fifty years scientists have found in nature enough evidence of a previously unknown natural phenomenon that, although similar to "traditional" Tsunamis, may in fact cause an incomparable level of destruction along the coastlines. Such wave of huge proportions will be probably triggered in the Atlantic Ocean anytime in the next 500 years thus posing a daunting threat for the East Coast of America, North Africa and Europe.
The official Annie Lennox website
By contrast, something massive is needed to create waves with such a great height in the case of a mega-tsunami. So, what kind of event can create a mega-tsunami? Unlike usual tsunamis, mega-tsunamis are caused by giant landslides and other impact events such as volcanic eruptions or huge asteroids crashing into the sea. These phenomena rapidly displace large volumes of water, as energy from falling debris or expansion is transferred to the water.