Could a Tsunami Hit The United States?

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The few who saw it coming moved swiftly to save themselves. Most spotted the towering black wave too late to act before getting slammed not once, not twice but multiple times by waves trailing behind. The only survivors were those who made it to higher elevations, the top of a building or a tall tree, or secured a floating object to buoy them to safety. Survivors talked of how they grabbed loose clothing to crawl over someone blocking their climb. Others resorted to biting the heels of feet dangling in their faces to get a person above to move faster. The Indonesia Tsunami of December 26, 2004 took the lives of two hundred thousand and left millions homeless in a part of the world known as the Ring of Fire.

Scientists predict a mega-tsunami could visit the U.S. East Coast and its 30 million inhabitants at any time. They claim it is not a matter of if it might come but when, and warn to expect to be the mother of all tsunamis, destroying everything within 30 miles of shore.

Indonesia is located along a rim where 130 active volcanoes surround the Pacific Ocean, a region where earth’s outer plates suddenly descend beneath an adjacent plate, as though being sucked into the earth’s mantle. As the descending plate bends downward, it creates a large linear depression called an oceanic trench, trenches that form the deepest topographic depressions on the earth’s surface. Deepest of all, the Mariana trench on the western margin of the Ring of Fire dips seven miles below sea level. Called subduction, the process causes a rapid deformation of the sea floor, too often generating a powerful tsunami as did the earthquake on December 26, 2004 that devastated areas around the Indian Ocean, killing 200,000 and leaving millions homeless.

One of the largest, most destructive tsunamis ever recorded took place in Indonesia on August 26, 1883, when an eruption on Krakatoa left 36,417 dead. Ninety percent died not on Krakatoa but rather in the devastation that struck coastal towns and villages in Java and Sumatra hit by 135 foot waves. Entire populations perished not from fire, ash and smoke, but rather by drowning, or when bodies smashed into buildings, boats, or trees.

The tsunami predicted to hit America promises to be the worst ever witnessed in our lifetimes, and it won’t result from such an earthquake. It will begin with a volcanic eruption followed by a 20 unit: domino qq pkv that will end with a mega-tsunami smashing inland along the entire east coast and every continent bordering the Atlantic Ocean.

Why is it predicted to hit the U.S. coastline, and why so horrendous? The answer lays in extraordinary long wave lengths landslide generated tsunamis are capable of producing. Whereas earthquake generated tsunamis run to 10 meters in wavelength producing waves that can reach the top of a five floor skyscraper, mega-tsunamis caused by a landslide of the magnitude predicted in this case, can generate wavelengths up to 100 meters, slamming the shoreline with waves as high as the Empire State Building.

Scientists report that Cumbre Vieja, the most active volcano in the Canary Islands Archipelago, dropped during past eruptions as one solid block of rock a distance of 14 feet (4 meters). The claim is that the next eruption could dispel that solid block, a half-trillion tons of it, into the Atlantic setting off a chain reaction. When a solid object of that size and dimension hits the water, it releases a sudden pulse of energy while displacing the water so fast that it leaves a massive air cavity larger than the rock itself. The initial wave emits a surge of energy, clearing everything in its path for a half mile. The velocity of the waves it generates becomes influenced by the shape and depth of the sea bed, as well as by the distance between wave crests, so that it far exceeds the velocity of an earthquake generated tsunami. The greater the wavelength and the smaller the interval between successive wave crests, the faster a tsunami will travel. A mega-tsunami thus created can cross the ocean with the speed of a jet airplane to 650 mph.

Since the energy in a wave is proportional to wavelength and the square of the height, the wave height keeps increasing as it moves toward shore where the seabed becomes shallower. Another phenomenon occurs as it approaches land, in that the water along the shore recedes, as though sucked up by the growing wave, thus making it even more destructive. This happens because crests lift water from troughs, which are created ahead of the wave, a phenomenon that first occurs far below the surface. When the wave reaches land, friction slows the front end of the wave, while the back end continues at the same high speed, causing the wave to rear up as the two ends merge and continue moving forward. When the wave finally hits land, meeting little or no resistance, it does not immediately break but instead surges far inland before it breaks, often incurring more damage as the water recedes into the ocean. Often trailing waves can hit harder than the one before it with the target area getting hit multiple times.

 

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