The earthquake epicentre was near lyttelton, just 10 kilometres southeast of christchurchs central business district. This earthquake produced a visible rent across the landscape that allowed scientists to directly measure the movement of the longest fault segment, the greendale fault. Christchurch is still recovering from the earthquake in february that killed 182 people and destroyed much of the downtown area. Water pipes, roads, bridges, power lines, cell phone towers and ordinary phone lines were broken or damaged. Aftershocks, triggered earthquakes, and christchurchs seismic future posted on february 26, 2011 by chris rowan as more scientific information becomes available regarding last weeks magnitude 6. Pdf how communities in christchurch have been coping with. Earthquakes from the last 365 days that may have caused shaking weak or greater in new zealand. Aftershocks, 22 february 2011 to 11 february 2012 historic. Aftershocks, triggered earthquakes, and christchurchs seismic. The 2010 canterbury earthquake also known as the darfield earthquake struck the south island of new zealand with a moment magnitude of 7. New zealands christchurch hit by series of earthquakes.
Feb 22, 2011 the earthquake that brought death and destruction to christchurch on tuesday was almost certainly an aftershock of a larger quake that rocked new zealand on 3 september last year but while last. With this in mind ive reused the framework from another mapping project im working on, and put together a time lapse video displaying. Five years of rebuilding christchurch, as seen from the sky. The severest of those events were the earthquake magnitude from 7. Looking at all the seismic activity in the aftershock area of the september 2010 darfield canterbury earthquake the expected numbers of earthquakes continue to drop. It occurred nearly six months after the 4 september 2010. The yellow focal mechanisms are for the main shock as derived by geonet top and usgs bottom. Geonet combines magnitudes into a summary magnitude, m, which consists of a weighted average of the individual magnitudes and attempts to be a best possible compromise between all magnitudes for a range of earthquake sizes. Focal mechanisms or fault plane solutions show the fault and direction of slip. Timelapse visualisation of todays earthquakes in christchurch and canterbury, new zealand. The earthquake occurred more than five months after the 4 september 2010 earthquake, but is considered to be an aftershock of the earlier quake. Geonet staff deployed portable earthquake recorders to collect information on the rich aftershock sequence of the earthquake. This was the second major earthquake to hit the city.
Christchurch quake was aftershock from 2010, scientists. It will take decades for canterbury to return to pre2010 quake levels. Rescue and recovery efforts are under way in new zealand after a powerful earthquake shook the city of christchurch tuesday, killing at least 32 people and injuring dozens more. The death toll is expected to climb after major destruction in the new zealand city. The june 2011 christchurch earthquake was a shallow magnitude 6. The tremor struck 10km south of christchurch and 10km west of lyttelton at a depth of 5km, geonet reported. Although similar aftershock sequences have historically occurred around the world, such.
February 2011 christchurch earthquake february 2011. Monday 28 september the new zealand response to the 22. The earthquakes that have struck near cheviot in canterbury over the last day are part of a common aftershock pattern, according to geonet. At the time it was still recovering from the effects of a 7. Christchurch and canterbury earthquakes christchurch. The city of christchurch experienced a major earthquake centred south of the city. Use features like bookmarks, note taking and highlighting while reading the insurance aftershock. Aftershocks, triggered earthquakes, and christchurchs.
Christchurch and surrounding areas have experienced major earthquakes since a 7. The surface fault trace is shown as red line segments. Canterbury earthquake activity pretty standard and. The probability of one or more earthquakes of magnitude 5. Timelapse visualisation of the june 2011 earthquake and its aftershocks in christchurch and canterbury, new zealand. Epicenter was at 30 km east of darfield and near the original epicenter of the massive 7. The hidden fault that caused the february 2011 christchurch.
We forecast aftershock probabilities for the area in the red box on the map below. Last septembers darfield earthquake was centred 40 km to the west of christchurch, but the epicentres of the aftershocks in the months that followed gradually migrated east towards the city. Two days after an earthquake levelled central christchurch, the disaster was documented from the sky. How communities in christchurch have been coping with. Large earthquakes strike southeast of christchurch. The map below courtesy of geonet shows that these smaller aftershocks the green circles do encompass the area containing the fault which. Christchurch earthquake, new zealand 2011 disasters.
Nasa has published a map linking the september 2010 7. Christchurch aftershocks part of normal sequence, geonet says. Christchurch earthquake kills 185 nzhistory, new zealand. Christchurch earthquakes of 201011, series of tremors that occurred within and near the city of christchurch, new zealand, and the canterbury plains region from early september 2010 to late december 2011. Millions of products all with free shipping new zealand wide. New 2011 christchurch earthquake and aftershock see more. The death toll is expected to climb after major destruction in the new zealand city from a 6. As at this morning, nearly 8000 people had reported feeling the 9. Several aftershocks were reported, some registering at a 5. Five years on, updated aerial imagery taken earlier this year gives a stark view of the.
Institute of geological and nuclear sciences soil liquefaction liquefaction is a phenomenon in which the strength and stiffness of a soil is reduced by extreme shaking. Focal mechanisms of the darfield earthquake and nearly a months worth of aftershocks are shown in fig. Download it once and read it on your kindle device, pc, phones or tablets. I felt the next christchurch quake 22 february while at work, and a few aftershocks as well. The fatal aftershock after several large aftershocks including a m6 on boxing day, and a textbook aftershock sequence, the probability of another large m6 aftershock in 2011 was looking very unlikely. Christchurch and canterbury earthquakes christchurch city. About 10 hours after the huge quake hit, geonet had recorded 232 aftershock events. While geonet monitors geohazards 247 we do not monitor this facebook page 247 please read more info below. Canterbury earthquake facts and figures new zealand parliament. Five years of rebuilding christchurch, as seen from the. An aftershock is a smaller earthquake that occurs after a previous large earthquake, in the same area of the main shock.
All we have now is the cleanup of sewerage and damage and the endless hagglingbickeringbitching over saving heritage buildings. The focal mechanisms of both shocks indicate mostly pure strikeslip motion, probably dextral strikeslip along. The map indicates many events over the past 6 months, but not the thousands reported elsewhere. Fault under christchurch sparks up and generates citys largest. The area has recorded more than 7,000 earthquakes since a magnitude. Dec 22, 2011 christchurch is still recovering from the earthquake in february that killed 182 people and destroyed much of the downtown area. The focal mechanisms of both shocks indicate mostly pure strikeslip motion, probably dextral strikeslip along a northeastsouthwest oriented. When i woke up to feel the first christchurch earthquake 4 september 2010 my first thought after wtf was whether it was the big one expected some time on the alpine fault. It struck the canterbury region of the island and caused a lot of damage and many deaths in christchurch, new zealands second largest city. Just another reminder that the christchurch aftershock sequence is still ongoing. But, given its location, it was more widely felt and more damaging. In september 2010, christchurch was shaken by the magnitude 7. New zealands civil defence declared a state of emergency for the kaikoura region, centred on a tourist town about 150 km 90 miles northeast of christchurch, soon after mondays large aftershock.
Christchurch quake was aftershock from 2010, scientists say. It struck the canterbury region of the island and caused a lot of damage and many deaths in christchurch, new zealands second largest city it was the largest. The tremor struck 10km south of christchurch and 10km west of lyttelton at a depth of 5km, geonet. The fire service says it has had no reports of damage, nzn reports.
The science behind the new zealand quake live science. Feb 22, 2011 geonet staff deployed portable earthquake recorders to collect information on the rich aftershock sequence of the earthquake. New zealands gns science has stated that the earthquake was part of the aftershock sequence that has been occurring since the september magnitude7. Gns science and geonet developed aftershock forecasts based on the.
Christchurch quake map earthquakes since june 2011. Christchurchs strongest local earthquake in more than a year may have been. The earthquakes have had a devastating effect on the central city and the people of christchurch and surrounding areas. Canterbury quake recent events natural hazards and risks our. Though smaller than the first quake, and technically part of its aftershock sequence, the february earthquake was more destructive. In the ten minutes after it hit, there were 10 aftershocks of magnitude 4 or more. How communities in christchurch have been coping with their earthquake article pdf available in new zealand journal of psychology 404. Hidden fault canterbury quake recent events natural. Poor christchurch just cant seem to catch a seismic break this year. Just as christchurch was beginning to recover from the huge impact of the 4 september 2010 earthquake, a massive aftershock delivered an even more deadly and destructive blow to the city. The fault that caused the canterbury earthquake on 4 september 2010. Feb 24, 2011 aftershock a few minutes after initial earthquake outside christchurch convention centre. Geonet data centre manager explains seismic waves and whats been observed in. An earthquake has hit christchurch, with residents reporting a significant shake.
Canterbury earthquake and associated aftershock epicentres source. This earthquake unsettled many people and that is perfectly normal. Christchurch earthquakes of 201011 new zealand britannica. It was felt from christchurch through to auckland, according to geonet. All earthquakes in the christchurch region since september 2010.
Geonet, which monitors seismic activity in new zealand, said. The hidden fault that caused the february 2011 christchurch earthquake more information. Some damaging aftershocks followed the main event, the strongest of which was a magnitude 6. The earthquakes epicentre was near lyttelton, just 10 km southeast of christchurchs central business district. Airbridge logistics an airbridge is the route and means of delivering material from one place to another by an airlift. The earthquake that brought death and destruction to christchurch on tuesday was almost certainly an aftershock of a larger quake that rocked new zealand on 3 september last year but while last.
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