The 11 March 2011 magnitude-9.0 Tohoku-Oki earthquake off the eastern coast of Japan was one of the largest recorded earthquakes in history. It is the most powerful earthquake ever recorded in … Several hours later 9-foot (2.7-metre) tsunami waves struck the coasts of California and Oregon in North America. 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. The effects of the earthquake were great devastation for the city of Santai. Five million tons of material and debris from Japan were swept out to the Pacific Ocean by the tsunami. 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 first two sequences are filtered to emphasize surface waves and the second two filtered to emphasize body waves. The 2011 earthquake off the Pacific coast of Tōhoku was a magnitude 9.0–9.1 (M w ) undersea megathrust earthquake off the coast of Japan that occurred at 14:46 JST (05:46 UTC) on Friday 11 March 2011, with the epicentre approximately 70 km east of the Oshika Peninsula of Tōhoku and the hypocenter at an underwater depth of approximately 29 km.wikipedia According to some reports, one wave penetrated some 6 miles (10 km) inland after causing the Natori River, which separates Sendai from the city of Natori to the south, to overflow. This is the fourth largest earthquake 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 … The magnitude-9.0 earthquake struck at 2:46 pm. Map of the northern part of Japan's main island of Honshu depicting the intensity of shaking caused by the earthquake of March 11, 2011. For conciseness, only earthquakes with magnitudes greater than 7.0 or an intensity greater than lower-6 on the shindo scale are listed here. Fore and aftershocks - Scientists estimate that over 800 earthquakes of magnitude 4.5 or more were recorded following the main earthquake. The 1700 Cascadia earthquake occurred along the Cascadia subduction zone on January 26, 1700 with an estimated moment magnitude of 8.7–9.2. More than 127,000 buildings collapsed and almost 16,000 people died. 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 damages from the earthquake was dramatic. Wikipedia 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. It was preceded by several foreshocks, including a magnitude-7.2 event centred approximately 25 miles (40 km) away from the epicentre of the main quake. … The March 11, 2011, earthquake was the strongest to strike the region since the beginning of record keeping in the late 19th century, and it is considered one of the most powerful earthquakes ever recorded. The earthquake shifted Earth on its axis of rotation by redistributing mass, like putting a dent in a spinning top. This is the fourth largest earthquake in the world and the largest in Japan since instrumental recordings began in 1900. … If the initial estimate is confirmed, it will be the fifth largest earthquake in recorded history. This is because the magnitude of the earthquake was small, and the source area, which was estimated from the aftershock distribution and seismic waves, didn't cover the whole expected source region. The megathrust earthquake involved the Juan de Fuca Plate from mid-Vancouver Island, south along the Pacific Northwest coast as far as northern California.The length of the fault rupture was about 1,000 kilometers (620 miles), with an average slip … This magnitude 9.1 earthquake only released about 3 per cent of the energy of a theoretical magnitude 10 quake. The 2010 magnitude-8.8 Chile earthquake shortened the day by about 1.26 µs and shifted earth’s figure axis by about 8 cm. 1. More than 5,000 aftershocks hit Japan in the year after the earthquake, the largest a magnitude 7.9. 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. Although, the recent event ruptured a part of the focal region of the expected earthquake." The M 8.6 earthquake of March 2, 1933, produced tsunami waves as high as 29 m on the Sanriku Coast and caused more than 3,000 fatalities. (The early estimate of magnitude 8.9 was later revised upward.) Let us know if you have suggestions to improve this article (requires login). Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Image of the Day for March 12, 2011. Summary Poster. the deadliest tsunami since the 1993 Hokkaido earthquake generated a tsunami which was responsible for over 200 The sounds are real seismic data taken from 8 seismometers on a great circle around the globe, and sped up into the sonic range. View Historic Article Explorer Profile: Navakanesh M Batmanathan, Earthquake Geologist What if you could do something to help people who live in areas that are prone to earthquakes? Image credit: NASA › Full resolution jpeg (180 Kb) › Learn more. The quake caused no injuries and little damage.) With a magnitude of 9.1 making it the most powerful recorded earthquake to ever hit Japan. Here are some of the amazing facts about the Japan earthquake and tsunami. The March 11 temblor was felt as far away as Petropavlovsk-Kamchatsky, Russia; Kao-hsiung, Taiwan; and Beijing, China. The temblor also shortened the length of a day by about a microsecond. 2. Omissions? https://www.britannica.com/event/Japan-earthquake-and-tsunami-of-2011, LiveScience - Japan Earthquake and Tsunami of 2011: Facts and Information, National Geographic - Tohoku Earthquake and Tsunami, NOAA National Center for Environmental Information - Japan Earthquake and Tsunami, Japan earthquake and tsunami of 2011 - Student Encyclopedia (Ages 11 and up). This is the deadliest tsunami The earthquake and tsunami. More than 127,000 buildings collapsed and almost 16,000 people died. The tsunami also instigated a major nuclear accident at a power station along the coast. 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. On May 22, 1960, the largest earthquake in recorded history—magnitude 9.5—struck southern Chile. Image of the Day Land Water Human Presence Earthquakes. The earthquake triggered tsunami warnings throughout the Pacific basin. Tsunami waves smashed the coast, causing massive damage and flooding. Sendai was the nearest major ci… Image of the Day Land Water Human Presence Earthquakes For the aftershock that occurred on 7 April, see April 2011 Miyagi earthquake. 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. It was measured at 8.4 on the JMA seismic intensity scale The earthquake happened 130 kilometres (81 mi) off Sendai, Miyagi Prefecture, on the east coast of the Tōhoku of Japan, on March 11, 2011 at 05:46:23 UTC.It was at a depth of 24.4 km (15.2 miles). 2. Japan's 2011 earthquake struck close to the Japan Trench off the coast of Tōhoku at magnitude 9 on March 11. 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