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The June 2011 Christchurch earthquake was a shallow magnitude 6.0 M w earthquake that occurred on 13 June 2011 at 14:20 NZST (02:20 UTC). It was centred at a depth of 7 km (4.3 mi), [ 1 ] about 5 km (3 mi) south-east of Christchurch , [ 7 ] which had previously been devastated by a magnitude 6.2 M W earthquake in February 2011.
A major earthquake occurred in Christchurch on Tuesday 22 February 2011 at 12:51 p.m. local time (23:51 UTC, 21 February). [2] [10] The M w 6.2 (M L 6.3) earthquake struck the Canterbury region in the South Island, centred 6.7 kilometres (4.2 mi) south-east of the central business district. [11]
Only earthquakes with a magnitude of 6.0 or greater are listed, except for a few that had a moderate impact. Aftershocks are not included, unless they were of great significance or contributed to a death toll, such as the M 6.3 2011 Christchurch earthquake and the M 7.3 aftershock to the 1931 Hawke's Bay earthquake.
Earthquake damage in Christchurch (2011). New Zealand suffers from many natural hazards, including earthquakes and tsunamis, volcanic and hydrothermal eruptions and landslides. The largest earthquake in New Zealand was an M8.2 event in the Wairarapa, in 1855, [35] and the most deaths (261) occurred in a M7.8 earthquake in Hawkes Bay in 1931.
An earthquake occurred in Christchurch on 14 February 2016 at 1:13 p.m. local time (00:13 UTC) and initially recorded as 5.9 [4] on the Richter scale, but subsequently reviewed as 5.7. [5] Often referred to as the Valentine's Day earthquake , it was centred in the sea off New Brighton at a depth of 15 kilometres (9.3 mi). [ 4 ]
Earthquakes are common on the West Coast, with multiple plate boundaries like the San Andreas fault making geologic activity more likely. They are rarer on the East Coast, but they do happen .
This has resulted in a complex splaying of faults, [11] which is associated with large earthquakes adjacent to, but off the Alpine fault itself, such the 1929 Murchison earthquake, 1968 Inangahua earthquake and 1929 Arthur's Pass earthquake. [b] The Alpine Fault has the greatest uplift of the Pacific plate near Aoraki / Mount Cook in its ...
Generally, there are few earthquakes in the Canterbury region. However, the Alpine Fault last ruptured in 1717 CE, and a major earthquake on the Alpine Fault can be expected to occur every 200 to 300 years. Liquefaction of the ground can occur up to 150 km from the epicentre for a large earthquake. Notable earthquakes include: