Wednesday, October 26, 2016

PBS Nova: Surviving The Tsunami HD (History\Nature Documentary)

Remember, the North American Tectonic Plate is riding up over the (subducting) leading Pacific Tectonic Plates: (53:03 minute YouTube Video)
PBS Nova: Surviving The Tsunami HD (History\Nature Documentary)
This video, filmed by NHK is of The 2011 earthquake off the Pacific coast of Tōhoku (東北地方太平洋沖地震 Tōhoku-chihō Taiheiyō Oki Jishin?) was a magnitude 9.0 (Mw) undersea megathrust earthquake off the coast of Japan that occurred at 14:46 JST (05:46 UTC) on Friday 11 March 2011,[2][3][8] with the epicentre approximately 70 kilometres (43 mi) east of the Oshika Peninsula of Tōhoku and the hypocenter at an underwater depth of approximately 30 km (19 mi).[2][9] The earthquake is also often referred to in Japan as the Great East Japan earthquake (東日本大震災 Higashi nihon daishinsai?)[10][11][12][fn 1] and also known as the 2011 Tōhoku earthquake,[26] and the 3.11 (IE: March 11) earthquake. It was the most powerful earthquake ever recorded to have hit Japan, and the fourth most powerful earthquake in the world since modern record-keeping began in 1900.[8][27][28] The earthquake triggered powerful tsunami waves that reached heights of up to 40.5 metres (133 ft) in Miyako in Tōhoku's Iwate Prefecture,[29][30] and which, in the Sendai area, traveled up to 10 km (6 mi) inland.[31] The earthquake moved Honshu (the main island of Japan) 2.4 m (8 ft) east, shifted the Earth on its axis by estimates of between 10 cm (4 in) and 25 cm (10 in),[32][33][34] and generated infrasound waves detected in perturbations of the low-orbiting GOCE satellite.[35] (53:03 minute YouTube Video)
Published on Feb 1, 2016
National Geographic, The History Channel, Nat Geo Wild, PBS Nova

Of course there have been Tsunamis with higher run-ups than that. List of historical tsunamis - From Wikipedia, the free encyclopedia

World's Tallest Tsunami (in current historical record, as of November 26, 2016): 1958 Lituya Bay megatsunami
A tsunami with a record run-up height of 524 meters (1720 feet) occurred in Lituya Bay, Alaska
On the night of July 9, 1958, an earthquake along the Fairweather Fault in the Alaska Panhandle loosened about 40 million cubic yards (30.6 million cubic meters) of rock high above the northeastern shore of Lituya Bay. This mass of rock plunged from an altitude of approximately 3000 feet (914 meters) down into the waters of Gilbert Inlet (see map below). The impact generated a local tsunami that crashed against the southwest shoreline of Gilbert Inlet. The wave hit with such power that it swept completely over the spur of land that separates Gilbert Inlet from the main body of Lituya Bay. The wave then continued down the entire length of Lituya Bay, over La Chaussee Spit and into the Gulf of Alaska. The force of the wave removed all trees and vegetation from elevations as high as 524 meters (1720 feet) above sea level. Millions of trees were uprooted and swept away by the wave. This is the highest wave that has ever been known.