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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.
A potent magnitude 6.6 M w intraplate aftershock occurred at 17:16 JST (08:16 UTC) on 11 April, in the Hamadōri region of Fukushima, Japan.With a shallow focus of 13 km (8.1 mi), the earthquake was centred inland about 36 km (22 mi) west of Iwaki, causing widespread strong to locally severe shaking.
The March 2011 Sanriku earthquake was a foreshock of the 9.1 earthquake 2 days later. — — 10 [27] China, Yunnan: 5.5 10.0 VII The 2011 Yunnan earthquake damaged 12,000 homes, left 26 people dead and 313 injured. 26 313 11 [28] Japan, Tōhoku Region offshore 9.1 29.0 XI [29]
The magnitude 7.1 quake occurred off the country’s northeastern coast late Saturday, local time. Earthquake hits Japan, rocking Fukushima, site of 2011 nuclear disaster Skip to main content
- On March 11, 2011, a 9.0 magnitude earthquake and tsunami struck northeast Japan, killing nearly 20,000 people and causing a meltdown in Fukushima, leading to the world's worst nuclear disaster ...
In Japan, the Shindo scale is commonly used to measure earthquakes by seismic intensity instead of magnitude. This is similar to the Modified Mercalli intensity scale used in the United States or the Liedu scale used in China, meaning that the scale measures the intensity of an earthquake at a given location instead of measuring the energy an earthquake releases at its epicenter (its magnitude ...
Scientists recorded a slow-slip event in 2011 before the magnitude-9 Tohoku earthquake and tsunami in Japan, which killed more than 18,000 people and touched off the Fukushima nuclear disaster.
The Fukushima nuclear accident was a major nuclear accident at the Fukushima Daiichi Nuclear Power Plant in Ōkuma, Fukushima, Japan, which began on 11 March 2011. The proximate cause of the accident was the 2011 Tōhoku earthquake and tsunami, which resulted in electrical grid failure and damaged nearly all of the power plant's backup energy ...