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The first one was at least 7.4 but got down graded to 7.1.

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14y ago

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What was the size of the Christchurch earthquake 2011?

The Christchurch earthquake that struck New Zealand on February 22, 2011, had a magnitude of 6.3 on the Richter scale.


What was the magnitude of the earthquake in Christchruch?

The magnitude of the 2011 earthquake in Christchurch, New Zealand, was 6.3 on the Richter scale.


How big was the first earthquake on the 4th September 2010?

The earthquake that occurred on September 4, 2010 ( the Christchurch Earthquake) was a 7.0


Was the Christchurch earthquake a deep earthquake or not?

The earthquake in Christchurch, NZ on the 22nd of February, 2011 was located just 4 or 5km underground. To put this in perspective, the quake in September, located near Christchurch was twice the depth, 10km below ground. So although the quake may have been 6.3 on the Richter Scale, it was a lot shallower than the one in September (7.3 on the Richter Scale), did a lot more damage and took many, many more lives. Hope this helps.


How big was Christchurch earthquake?

The Christchurch earthquake that occurred on February 22, 2011, had a magnitude of 6.3. It caused significant damage to buildings and infrastructure in the city, resulting in 185 fatalities and numerous injuries.


What date was the christchurch earthquake?

The date of the Christchurch Earthquake was September 4, 2010. The earthquake hit at 4:35am.


What got destroyed in the christchurch earthquake?

the Christchurch cathedral


How big is Christchurch city?

The Canterbury earthquake was 7.1 on the Richter scale, and unusually shallow at 10 km. It is expected that the largest aftershock could be up to 6 on the Richter scale, and they are expected to last for many months. This particular fault line, previously unknown, has been quiet for at least 16 000 years - before the current glacial and gravel outwashes created the Canterbury Plains.


How many times more powerful was the Japan earthquake than the Christchurch earthquake?

The 2010 Christchurch earthquake was of magnitude 7.1. The 2011 Christchurch earthquake was of magnitude 6.3. The 2011 Japan earthquake was of magnitude 9.0. The formula for comparing the energy released by two earthquakes using the moment magnitude scale (which is what I assume those numbers are in, since it's the most common scale for large earthquakes) is D=103*(m1 - m2)/2 So compared to the more recent Christchurch earthquake, we get that the Japan earthquake was about 103*(9.0-6.3)/2 = 103*2.7/2 = 104.05 which we can tell even without actually doing the calculations is a bit over 10,000 times more powerful in terms of total energy released. (this does not, however, mean 10,000 times more damage).


What day did the Christchurch earthquake happen in 2011?

The Christchurch earthquake happened on February 22, 2011. It was a devastating earthquake that caused significant damage and loss of life in the city of Christchurch, New Zealand.


What was the earthquake in Christchurch?

7.4


What was the population in Christchurch before the earthquake?

Before the 2011 earthquake, the population of Christchurch was around 370,000 people.