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The last tsunami warning in the San Francisco Bay Area followed a 9.1 earthquake in Tohoku, Japan that sparked a major nuclear accident at the Fukushima-Daiichi nuclear power plant in March 2011 ...
The Japan Meteorological Agency (JMA) officially named this earthquake the 2024 Noto Peninsula earthquake (Japanese: 令和6年能登半島地震, Hepburn: Reiwa 6-nen Noto-hantō Jishin). [6] It led to Japan's first major tsunami warning since the 2011 Tōhoku earthquake , [ 7 ] and a tsunami of 7.45 m (24 ft) was measured along the Sea of ...
Megathrust earthquakes occur at convergent plate boundaries, where one tectonic plate is forced underneath another. The earthquakes are caused by slip along the thrust fault that forms the contact between the two plates. These interplate earthquakes are the planet's most powerful, with moment magnitudes (M w) that can exceed 9.0.
The earthquake [62]) was a powerful magnitude 6.6 earthquake [63] [64] that occurred 10:13 a.m. local time (01:13 UTC) on July 16, 2007, in the northwest Niigata region of Japan. [63] Eleven deaths and at least 1,000 injuries have been reported, and 342 buildings were completely destroyed, mostly older wooden structures.
As a result, earthquakes previously rated as intensity 4 might now be rated as intensity 5 or 6, and quakes that would not have been recorded might now be recorded as intensity 3 or 4. This indicates a lighter "weight" in the current intensity scale, leading to a significant increase in earthquake reports and generally higher intensity readings.
Today, Japan has more than 270 buildings higher than 150 meters (492 feet), the fifth most in the world, according to data from the Council on Tall Buildings and Urban Habitat.
The 2011 Tohoku earthquake was the largest earthquake ever recorded in Japan, and is the fourth largest earthquake in recorded history, a tsunami up to 40.5 m (133 ft) high caused 19,745 deaths with 6,242 people injured, and 2,556 people missing.
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.