How strong was the earthquake in Fukushima?

How strong was the earthquake in Fukushima?

Early estimates placed the strength of the earthquake at a magnitude of 7.0–7.1, but the United States Geological Survey (USGS) lowered the magnitude to 6.6. The Japan Meteorological Agency (JMA) assessed a magnitude of 7.0 Mj and a depth of 6.4 km (4.0 mi).

When did Japan have a 9.1 earthquake?

March 11, 2011
On March 11, 2011, a magnitude (Mw) 9.1 earthquake struck off the northeast coast of Honshu on the Japan Trench. A tsunami that was generated by the earthquake arrived at the coast within 30 minutes, overtopping seawalls and disabling three nuclear reactors within days.

What happens in a 9.0 earthquake?

Called Cascadia, the magnitude 9.0 quake caused the entire Pacific Northwest coastline to suddenly drop 3 to 6 feet and sent a 33-foot high tsunami across the ocean to Japan. “Japanese sources document this earthquake, which is the earliest documented historical event in Western Washington.

Why did the 2022 Fukushima earthquake happen?

It was on the subduction interface where the 2011 Tōhoku earthquake and tsunami nucleated. That event involved a rupture 220 × 400 km on the subduction zone. The 2022 earthquake coincidentally occurred near the dates of first anniversaries of the February 2021 Fukushima and March 2021 Miyagi earthquakes.

How big was the Fukushima tsunami?

The tsunami, which reached more than 45 feet in height, flooded the emergency power generators in the Fukushima Daiichi nuclear power plant in Okuma, Japan. That led to the meltdown of three of the plant’s six reactors. About 164,000 people were forced to leave the area, and cleanup efforts continue to this day.

What level was the Fukushima earthquake?

The report said poor planning worsened the disaster response, noting that authorities had “grossly underestimated tsunami risks” that followed the magnitude 9.0 earthquake. The 12.1-meter (40 ft) high tsunami that struck the plant was double the height of the highest wave predicted by officials.

Where did the 2022 Fukushima earthquake happen?

On March 16, 2022, at 23:36 JST, a strong earthquake struck off the coast of Fukushima, Japan. The earthquake had a magnitude of 7.4 according to the Japanese Meteorological Agency (JMA), while the United States Geological Survey (USGS) gave a slightly lower estimate of 7.3.

What was Fukushima on the Richter scale?

The Fukushima-Daiichi nuclear incident was caused by a huge earthquake (9.0 on the Richter scale) off the northeast coast of the main Japanese Island of Honshu on March 11, 2011.

What was the magnitude of the Fukushima earthquake in Japan?

^ a b “M 7.1 – 70 km ENE of Namie, Japan”. Retrieved 13 February 2021. ^ a b “Powerful magnitude 7.3 earthquake jolts Fukushima area”. The Japan Times. 13 February 2021.

What is the equivalent of the 2021 Fukushima earthquake?

That event involved a rupture 220 by 400 km on the subduction zone. The most recent similar-sized comparable to the 2021 quake was the 6.9 M w or 7.4 M JMA 2016 Fukushima earthquake, which occurred just southwest of where the February 2021 earthquake took place.

How many people died in the Fukushima earthquake and tsunami?

It swept through the Kantō Plain, destroying towns and cities. The tsunami also caused a series of catastrophic nuclear meltdowns at the Fukushima Daiichi Nuclear Power Plant shortly after. In all, an estimated 20,000 people lost their lives due to both the earthquake and tsunami.

Which prefectures have been most affected by the Fukushima earthquake?

Other prefectures including Ibaraki, Tochigi, Gunma, Saitama, Chiba, and Kanagawa also reported one or more profound or insignificant injuries. On 23 February, ten days after the earthquake, the body of a man in his 50s was discovered by a family member, buried under furniture in his house in Fukushima City.