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15:30
mega tsunami
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Mega Tsunami 2012
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published: 16 Jan 2012
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Could A MegaTsunami Happen Soon ?
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Could A MegaTsunami Happen Soon ?
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Mega Tsunami The End Of The World Crashday
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published: 07 Apr 2014
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Tsunami : Documentary on Deadly Tsunamis and Mega Tsunamis
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published: 23 Sep 2013
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National Geographic The Next Mega Tsunami
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published: 30 Dec 2014
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Alaskan Super Wave - Mega Tsunami - BBC
Two survivors of a Mega Tsunami tell their stories of the day the 1/2km high wave hit Litu...
published: 18 Aug 2008
author: BBCWorldwide
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Tsunami wave - HD
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published: 09 Feb 2014
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La Palma Mega Tsunami.mov
This movie shows a physics-based computer simulation of a Mega Tsunami generated by a flan...
published: 22 Jun 2012
author: ingomar200
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5:15
Tsunami Hawaii 2012 by landslide. Mega Tsunami
Tsunami Hawaii 2012 Is it Possible ? Docu National Geographic Channel. Honolulu disaster....
published: 28 Oct 2012
author: fred grauf
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14:50
MEGA Tsunami Caught On TOURISTS CAMERAS FOUND AFTER DISASTER
Actually it wouldn't kill you if you ran INTO the wave. Well there's a high chance you wil...
published: 19 Dec 2013
author: Mehdi k
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6:15
Mega Tsunami Alert to US East Coast (English Version)
Mega Tsunami hitting New York - short compilation from Gareth Edward's "End Day". I do not...
published: 12 Aug 2008
author: disneyfans1
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published: 06 Sep 2014
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8:25
Mega Tsunami - Canary Islands Threat
The Canary Islands pose a *rare* but real mega tsunami threat to the East Coast of North A...
published: 13 Oct 2011
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9:04
MEGA TSUNAMI DE LA PALMA (ISLAS CANARIAS)
En la isla de la palma se va a crear un mega tsunami k va a arrasar varios paises justo lo...
published: 17 Jan 2014
author: Byron Love
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0:43
Mega Tsunami Incredible Footage
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published: 07 Jan 2009
author: Account376
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9:25
Mega Tsunami • La Palma se hunde
La isla de La Palma, en las Canarias, se hunde, pero no se sabe cuándo, y provocaría un gr...
published: 20 Nov 2008
author: Txema Prada
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120:19
Tsunami (Sub-Español) Pelicula Completa
Una cinta que sitúa su acción en uno de los puntos más turísticos de la costa surcoreana y...
published: 11 Aug 2014
author: Cine Asia
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15:00
PREHISTORIC MEGASTORMS - Mega Tsunami Pt.1 of 3
Pt.2 @ http://www.youtube.com/watch?v=f4DYumOWQ_4 FOR ENTERTAINMENT PURPOSES ONLY; THANKS ...
published: 29 Sep 2011
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7:46
MEGATSUNAMI DOCUMENTARY PART 1
This is the award winning documentary on Megatsunami, giant waves that could destroy the E...
published: 24 Jul 2007
author: Thom Goddard
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3:42
Mega-Tsunami: Lake Tahoe.mov
This movie shows a physics-based computer simulation of a Mega Tsunami that occurred in La...
published: 26 Jun 2013
author: ingomar200
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7:37
Mega Tsunami: Vague de 523 Metres!
Une vague de plus de 523 mètres de haut!...
published: 28 Oct 2008
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44:00
Mega Tsunami - La Palma (Canarias)
La isla de La Palma, en las Canarias, se hunde, pero no se sabe cuándo, y provocaría un gr...
published: 31 Oct 2014
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44:50
Could A MegaTsunami Happen Soon ! HD 2015
Could A MegaTsunami Happen Soon ! HD 2015 Mega Tsunami Mega Tsunami The End Of The World C...
published: 08 Feb 2015
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45:59
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published: 21 Mar 2014
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119:51
2015 Disaster - A MegaTsunami | BBC Weather Documentary
In 6000 BC, 8000 years before the 2004 Indian Ocean tsunami, a paleotsunami whose waves re...
published: 05 Mar 2015
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57:21
Alaskan Super Wave - Mega Tsunami - BBC
The film is a true story about survivors in the world's worst natural disaster. First boll...
published: 09 Jan 2015
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81:21
Alaskan Super Wave - Mega Tsunami - BBC
watching tusunami but got bord and decided to play the game i think is called snnake. : ...
published: 09 Feb 2015
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43:52
Mega tsunami - nuove rivelazioni
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published: 24 Dec 2014
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44:35
Documentário_Mega Desastres - Tsunami na Costa Leste
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published: 25 Apr 2013
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32:16
Mega Tsunami Full Movie Text Indonesia
Ridiculous Japanese tsunami Struck in tsunami Surfing a Tsunami - Man surfs 65' killer wav...
published: 02 Feb 2015
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51:30
Mega Tsunami Full Movie Text Indonesia
Ridiculous Japanese tsunami Struck in tsunami Surfing a Tsunami - Man surfs 65' killer wav...
published: 31 Jan 2015
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86:05
A Mega Tsunami 2015 Disaster - BBC Documentary 2015
Disaster A Mega Tsunami 2015 - BBC Documentary tsunami martin garrix tsunami caught on cam...
published: 26 Feb 2015
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27:53
Mega Tsunami Hits and 70 Millions People Die Globally - Efrain Rodriguez
This is the video uploaded by Prophet Efrain Rodriguez Ministry on July 18, 2014. I upload...
published: 25 Jul 2014
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47:54
MegaQuake Could Hit North America - BBC (Full Documentary)
Protect yourself from Tsunamis and Earthquakes. Follow the link below to be alerted by sms...
published: 25 Jul 2012
author: EQReporter
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56:56
Mega Tsunami Documentary
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Thảm Họa Sóng Thần Mega Disaster Tsunami 2006 - HD - Very Hot
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published: 06 Oct 2014
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8 Mega Tsunami Chevrons Of Death Comet
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published: 22 Jan 2015
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44:53
The United States East Coast Mega Tsunami
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published: 18 Jan 2015
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Tsunami : Documentary on Deadly Tsunamis and Mega Tsunamis
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published: 08 Dec 2014
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La Fine del Mondo 21 Dicembre 2012 TSUNAMI L'ONDA ASSASSINA
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published: 01 Dec 2012
author: vesuvio2012
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174:00
Mega Tsunami La Palma (Canarias)
La isla de La Palma, en las Canarias, se hunde, pero no se sabe cuándo, y provocaría un gr...
published: 28 Mar 2015
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Can the asteroid 2014 YB35 hit Earth?
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published: 27 Mar 2015
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mega tsunami japon,palma,india,lo imposible
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published: 25 Mar 2015
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Pode o asteoride 2014 YB35 atingir a Terra?
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published: 25 Mar 2015
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11:37
SOBREVIVA AO APOCALIPSE: DERRETIMENTO DA ANTÁRTIDA — MEGA TSUNAMI
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Japan 4 Years After The 9 0 Mega Quake And Tsunami
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Mega-Tsunami from the Canary Islands? EAST COAST U.S.GET FOOD NOW
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GLOBAL ALERT John Moore - Mega-Tsunami from the Canary Islands!
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GLOBAL ALERT. John Moore. Mega tsunami from the Canary Islands!
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Megatsunami (also known as iminami (斎波?, "purification wave")) is an informal term to describe a tsunami that has initial wave heights that are much larger than normal tsunamis. Unlike usual tsunamis, which originate from tectonic activity and the raising or lowering of the sea floor, known megatsunamis have originated from large scale landslides or impact events.

A megatsunami is meant to refer to a tsunami with an initial wave amplitude (height) measured in several tens, hundreds, or possibly thousands of meters.

Normal tsunamis generated at sea result from movement of the sea floor. They have a small wave height offshore, and a very long wavelength (often hundreds of kilometers long), and generally pass unnoticed at sea, forming only a slight swell usually of the order of 30 cm (12 in) above the normal sea surface. When they reach land the wave height increases dramatically as the base of the wave pushes the water column above it upwards.

By contrast, megatsunamis are caused by giant landslides and other impact events. This could also refer to a meteorite hitting an ocean. Underwater earthquakes or volcanic eruptions do not normally generate such large tsunamis, but landslides next to bodies of water resulting from earthquakes can, since they cause a massive amount of displacement. If the landslide or impact occurs in a limited body of water, as happened at the Vajont Dam (1963) and Lituya Bay (1958) then the water may be unable to disperse and one or more exceedingly large waves may result.




This page contains text from Wikipedia, the Free Encyclopedia - http://en.wikipedia.org/wiki/Megatsunami

This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.