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Sioux Falls Scientists endorse Mega Disasters: Mega Tsunami
for describing the mega tsunami disaster that wiped early
civilizations off the shores of the Mediterranean.

Mega Disasters: Mega Tsunami

Mega Disasters: Mega Tsunami (2008) - 50 minutes
Mega Disasters: Mega Tsunami at Amazon.com

Eight thousand years before the devastating 2004 Indian Ocean tsunami, waves taller than the Statue of Liberty ravaged the coasts of the Mediterranean Sea, decimating ancient villages and killing untold numbers of people.

In this stunning program from MEGA DISASTERS, watch as experts piece together evidence from this incredible storm, and reveal the face of the ancient tsunami for the first time. For more than eight millennia, the trigger of the mega tsunami remained a mystery; but, in 1996, a group of Italian scientists discovered an incredible clue in the most unlikely of places: two miles up, on the summit of Mt. Etna. Now, using all of their expertise, the scientists set out to prove their theory and shed light on the severity of the tsunami's destruction. Through their work, the team also examines whether a tsunami of this magnitude could happen again and how it would affect people the world over.

Featuring expert interviews, staggering footage from the 2004 Indian Ocean tsunami, and amazing 3-D computer-generated animation, MEGA TSUNAMI recreates the massive waves that may have changed the course of history.

5-12-17 Terrifying 20m-tall 'rogue waves' are actutally real
Terrifying 20m-tall 'rogue waves' are actutally real
For centuries sailors told stories of enormous waves tens of metres tall. They were dismissed as tall tales, but in fact they are alarmingly common. TEN-storey high, near-vertical walls of frothing water. Smashed portholes and flooded cabins on the upper decks. Thirty-metre behemoths that rise up from nowhere to throw ships about like corks, only to slip back beneath the depths moments later. Evocative descriptions of abnormally large "rogue waves" that appear out of the blue have been shared among sailors for centuries. With little or no hard evidence, and the size of the waves often growing with each telling, there is little surprise that scientists long dismissed them as tall tales. Until around half a century ago, this scepticism chimed with the scientific evidence. According to scientists' best understanding of how waves are generated, a 30m wave might be expected once every 30,000 years. Rogue waves could safely be classified alongside mermaids and sea monsters. However, we now know that they are no maritime myths.

12-14-16 'Smart boulders' record huge underwater avalanche
'Smart boulders' record huge underwater avalanche
A submersible feeds images back to the surface of a "smart boulder" on the seafloor. Scientists have had a remarkable close-up encounter with a gigantic underwater avalanche. It is the first time researchers have had instruments in place to monitor so large a flow of sediment as it careered down-slope. The event occurred in Monterey Canyon off the coast of California in January. The mass of sand and rock kept moving for more than 50km, as it slipped from a point less than 300m below the sea surface to a depth of over 1,800m. Speeds during the descent reached over 8m per second. An international team running the Coordinated Canyon Experiment (CCE) is now sitting on a wealth of data. "These flows, called turbidity currents, are some of the most powerful flows on Earth," said Dan Parsons, a professor of process sedimentology, at the University of Hull, UK. "Rivers are the only other mechanism that transports comparable volumes of sediment across the globe. However, although we have hundreds of thousands of measurements from rivers, we only have a small handful of measurements from turbidity currents – often for short periods of time and at only one position within a system."

12-14-16 Atlantic wave biggest ever recorded by buoy
Atlantic wave biggest ever recorded by buoy
The wave was captured not by man, but by a buoy. The highest-ever wave detected by a buoy has been recorded in the North Atlantic ocean. The 19-metre (62.3ft) wave happened between Iceland and the United Kingdom, off the Outer Hebrides, the World Meteorological Organization said. It was created in the aftermath of a very strong cold front with 43.8 knot (50.4mph) winds on 4 February 2013.

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Mega Disasters: Mega Tsunami

Sioux Falls Scientists endorse Mega Disasters: Mega Tsunami
for describing the mega tsunami disaster that wiped early
civilizations off the shores of the Mediterranean.