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A seismogram recorded in Massachusetts, United States. The magnitude 9.1 (M w) 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), [9] [56] with its epicenter approximately 72 km (45 mi) east of the Oshika Peninsula of Tōhoku, Japan, lasting approximately six minutes.
The massive Dec. 26, 2004, tsunami was triggered by a magnitude 9.1 earthquake off Sumatra island. The giant wall of water killed about 230,000 people in a dozen countries as far away as East Africa.
The Aleutian Trench, of the southern coast of Alaska and the Aleutian Islands, where the North American plate overrides the Pacific plate, has generated many major earthquakes throughout history, several of which generated Pacific-wide tsunamis, [22] including the 1964 Alaska earthquake; at magnitude 9.1–9.2, it remains the largest recorded ...
A magnitude 5.6 earthquake struck Erzurum Province on March 26 at the depth of 10 km (6.2 mi). 10 people were killed and 46 were injured. A magnitude 5.6 earthquake struck Erzurum Province on March 28 at the depth of 5 km (3.1 mi). 12 people were injured and 50 buildings were damaged in 10 villages.
In 1964, a massive 9.2 magnitude earthquake in Alaska resulted in a tsunami in Crescent City, California five hours later. The quake's epicenter was 1,600 miles from the town.
Since 1900, the only earthquakes recorded with a greater magnitude were the 1960 Chile earthquake (magnitude 9.5) and the 1964 Alaska earthquake in Prince William Sound (magnitude 9.2). The only other recorded earthquakes of magnitude 9.0 or greater were off Kamchatka , Russia, on 5 November 1952 (magnitude 9.0) and Tōhoku, Japan (magnitude 9. ...
If the eastern portion of the megathrust did rupture, then a magnitude of M w 9.0–9.1 is more reflective of the event. [17] The tsunami created by the earthquake suggests a (M t 9.0) event. [4] The earthquake was previously assigned magnitude 9.1 and subsequent analysis have revised it to magnitude 8.6. [21]
Magnitude: 9.1–9.3: Depth: 30: Epicenter: ... Sri Lanka was one of the countries struck by the tsunami resulting from the Indian Ocean earthquake on December 26, 2004.