This is the most devastating earthquake to occur in Japan since the 1995 Kobe earthquake caused over 5,500 deaths and The earthquake was so strong that it shifted Earth on its axis. For the aftershock that occurred on 7 April, see April 2011 Miyagi earthquake. On March 11, 2011, a magnitude 8.9 earthquake struck off the east coast of Honshu, Japan, about 130 kilometers (80 miles) east of Sendai. Omissions? Tōhoku Earthquake Massacre The Tohoku earthquake shook northern-eastern Japan on March 11th in 2011. John Rafferty, associate editor of Earth sciences at Encyclopædia Britannica, discussing tsunamis. Damaging tsunami waves struck the coasts of Iwate prefecture, just north of Miyagi prefecture, and Fukushima, Ibaraki, and Chiba, the prefectures extending along the Pacific coast south of Miyagi. He holds an M.A. The epicentre was located130 km east of the city Sendai, and affected countries around the world. More than 5,000 aftershocks hit Japan in the year after the earthquake, the largest a magnitude 7.9. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. The tsunami also instigated a major nuclear accident at a power station along the coast. 2011 Tōhoku earthquake and tsunami 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 9.0–9.1 (Mw) undersea megathrust earthquake off the coast of Japan that occurred at 14:46 JST (05:46 UTC ) … The magnitude-9.0 earthquake struck at 2:46 pm. The earthquake and tsunami. The sudden horizontal and vertical thrusting of the Pacific Plate, which has been slowly advancing under the Eurasian Plate near Japan, displaced the water above and spawned a series of highly destructive tsunami waves. Aftershocks continued, many exceeding magnitude-7.0. Finally, some 18 hours after the quake, waves roughly 1 foot (0.3 metre) high reached the coast of Antarctica and caused a portion of the Sulzberger Ice Shelf to break off its outer edge. 3.ōhoku_earthquake_and_tsunami How it Began. Large stretches of land were left submerged under seawater, particularly in lower-lying areas. The Tōhoku Earthquake was a magnitude-nine earthquake that struck the northeastern coast of Japan. This magnitude 9.1 earthquake only released about 3 per cent of the energy of a theoretical magnitude 10 quake. It generated waves 11 to 12 feet (3.3 to 3.6 metres) high along the coasts of Kauai and Hawaii in the Hawaiian Islands chain and 5-foot (1.5-metre) waves along the island of Shemya in the Aleutian Islands chain. Days before, a 7.2 magnitude earthquake with 6.0 magnitude The seismic events shown took place on that same day, between 01h41 and 23h59 (GMT). the deadliest tsunami since the 1993 Hokkaido earthquake generated a tsunami which was responsible for over 200 Hundreds of aftershocks, dozens of magnitude 6.0 or greater and two of magnitude 7.0 or greater, followed in the days and weeks after the main quake. The Fukushima Daiichi Nuclear Power Plant cooling system was damaged, raising fears of a meltdown. More than 127,000 buildings collapsed and almost 16,000 people died. Ring in the new year with a Britannica Membership. The epicenter was detected 64 miles off of the Sendai coast and was estimated to be only 18.6 miles below the surface. As the floodwaters retreated back to the sea, they carried with them enormous quantities of debris, as well as thousands of victims caught in the deluge. The earthquake caused a tsunami with waves that exceeded over 120 feet in height which in turn caused nuclear accidents at the Fukushima nuclear power plant. Let us know if you have suggestions to improve this article (requires login). The 2011 Tōhoku earthquake off the coast of Japan created a tidal wave 40m high and shifted the entire main island of Honshu east by 2.4m. … 2 (4), p. 305-323, DOI:10.1080/19475705.2011.632443 (Paula Dunbar, Heather McCullough, George Mungov, Jesse Varner, and Kelly Stroker), Majority of the deaths and missing are within the Iwate, Miyagi and Fukushima prefectures, Tohoku earthquake and tsunami data available from NOAA/NGDC, IOC/UNESCO Bulletin on Tohoku Earthquake and Tsunami Deaths, International Tsunami Information Center, Tohoku Tsunami, PMEL National Center for Tsunami Research, Tohoku Tsunami. This movie shows the seismic wave field in the Earth for two hours after the Tohoku Magnitude 9.0 earthquake on March 11, 2011. The first two sequences are filtered to emphasize surface waves and the second two filtered to emphasize body waves. (Some geologists argue that this portion of the Eurasian Plate is actually a fragment of the North American Plate called the Okhotsk microplate.) Here’s a look at the earthquake and tsunami that struck Japan in March of 2011.. March 11, 2011 - At 2:46 p.m., a 9.1 magnitude earthquake takes place 231 … 2011 Tōhoku Earthquake and Tsunami In 2011 Japan experienced an earthquake of the magnitude 9.1 which was the most powerful earthquake to ever hit the nation and the world’s fourth most powerful ever recorded in history. The earthquake was caused by the rupture of a stretch of the subduction zone associated with the Japan Trench, which separates the Eurasian Plate from the subducting Pacific Plate. This is a list of foreshocks and aftershocks of the 2011 Tōhoku earthquake.Japan had experienced 900 aftershocks after the M9.1 earthquake on March 11, 2011 with about 60 aftershocks being over magnitude 6.0 and three over magnitude 7.0. I would suggest adding a section on earthquake magnitude at Fukishima, which was apparently 6.8 and i woud add a section on damage at Fukishima 2 Daiini which went unstable but is back in control now.-- Patbahn 00:12, 19 March 2011 (UTC) Transport - Kesennuma Line. A part of the subduction zone measuring approximately 190 miles (300 km) long by 95 miles (150 km) wide lurched as much as 164 feet (50 metres) to the east-southeast and thrust upward about 33 feet (10 metres). The 9.1 magnitude (Mw) undersea megathrust earthquake occurred on 11 March 2011 at 14:46 JST (05:46 UTC) in the north-western Pacific Ocean at a relatively shallow depth of 32 km (20 mi), with its epicenter approximately 72 km (45 mi) east of the Oshika Peninsula of Tōhoku, Japan, lasting approximately six minutes. Unlike the recent M 9.0 earthquake, the 1933 earthquake did not occur as the result of thrust faulting on the subduction zone plate interface, but rather within the Pacific plate just seaward of the Japan Trench. in the world and the largest in Japan since instrumental recordings began in 1900. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. Impact Summary; Technical Summary; USGS Audio CoreCast Interview with Evelyn Roeloffs - Effect on Water Levels in … Contact Your Close Friends and Loved Ones THE 2011 JAPAN TSUNAMI The 2011 earthquake off the Pacific coast of Tōhoku was a magnitude 9.0–9.1 (M w) undersea megathrust off the coast of Japan that occurred at 14:46 JST (05:46 UTC) on Friday 11 March 2011, with the epicentre approximately 70 kilometres (43 mi) east of the Oshika Peninsula of Tōhoku and the hypocenter at an underwater depth … If the initial estimate is confirmed, it will be the fifth largest earthquake in recorded history. The event began with a powerful earthquake off the northeastern coast of Honshu, Japan’s main island, which caused widespread damage on land and initiated a series of large tsunami waves that devastated many coastal areas of the country, most notably in the Tōhoku region (northeastern Honshu). Tsunami source and water heights over a tsunami travel time (TTT) map (data current as of 10/10/2011).

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