The area has recorded more than 7,000 earthquakes since a magnitude. Several aftershocks were reported, some registering at a 5. The earthquakes have had a devastating effect on the central city and the people of christchurch and surrounding areas. In the ten minutes after it hit, there were 10 aftershocks of magnitude 4 or more. Poor christchurch just cant seem to catch a seismic break this year. 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. Seismologists believe that the 22 february quake was itself an aftershock of the magnitude 7.
Geonet, which monitors seismic activity in new zealand, said. New 2011 christchurch earthquake and aftershock see more. New zealands gns science has stated that the earthquake was part of the aftershock sequence that has been occurring since the september magnitude7. The 2010 canterbury earthquake also known as the darfield earthquake struck the south island of new zealand with a moment magnitude of 7. Timelapse visualisation of todays earthquakes in christchurch and canterbury, new zealand.
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. Aftershocks, triggered earthquakes, and christchurchs seismic. The tremor struck 10km south of christchurch and 10km west of lyttelton at a depth of 5km, geonet. 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. Earthquake data from the portable instruments are used in conjunction with data from permanent geonet monitoring stations and portable instruments that had remained deployed following the m7. 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. An earthquake has hit christchurch, with residents reporting a significant shake. It occurred nearly six months after the 4 september 2010. Canterbury quake recent events natural hazards and risks our. The earthquake epicentre was near lyttelton, just 10 kilometres southeast of christchurchs central business district.
Millions of products all with free shipping new zealand wide. Focal mechanisms or fault plane solutions show the fault and direction of slip. The map indicates many events over the past 6 months, but not the thousands reported elsewhere. 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. Christchurch quake was aftershock from 2010, scientists. The map below courtesy of geonet shows that these smaller aftershocks the green circles do encompass the area containing the fault which. Feb 22, 2011 geonet staff deployed portable earthquake recorders to collect information on the rich aftershock sequence of the earthquake. Geonet staff deployed portable earthquake recorders to collect information on the rich aftershock sequence of the earthquake. The tremor struck 10km south of christchurch and 10km west of lyttelton at a depth of 5km, geonet reported. Focal mechanisms of the darfield earthquake and nearly a months worth of aftershocks are shown in fig. Christchurch and surrounding areas have experienced major earthquakes since a 7. 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. February 2011 christchurch earthquake february 2011. The earthquake struck the canterbury region in new zealands south island and was centred 6.
Christchurch earthquake kills 185 nzhistory, new zealand. Canterbury earthquake facts and figures new zealand parliament. Though smaller than the first quake, and technically part of its aftershock sequence, the february earthquake was more destructive. Christchurch aftershocks part of normal sequence, geonet says. I felt the next christchurch quake 22 february while at work, and a few aftershocks as well. It struck the canterbury region of the island and caused a lot of damage and many deaths in christchurch, new zealands second largest city. The 2011 christchurch earthquake te ara encyclopedia of new. In the later christchurch earthquake in february 2011 the building was severely damaged, and it is planned by heritage new zealand for it to be dismantled, with the possibility of reconstruction. Christchurch and canterbury earthquakes christchurch city. The fire service says it has had no reports of damage, nzn reports. Fault under christchurch sparks up and generates citys largest. Although similar aftershock sequences have historically occurred around the world, such. The yellow focal mechanisms are for the main shock as derived by geonet top and usgs bottom.
Water pipes, roads, bridges, power lines, cell phone towers and ordinary phone lines were broken or damaged. The city of christchurch experienced a major earthquake centred south of the city. The valley inn tavern in heathcote, built in 1877, survived the initial quake, but had to be torn down after the large 5. Christchurch earthquake, new zealand 2011 disasters. The focal mechanisms of both shocks indicate mostly pure strikeslip motion, probably dextral strikeslip along. Five years of rebuilding christchurch, as seen from the. This was the second major earthquake to hit the city. Some damaging aftershocks followed the main event, the strongest of which was a magnitude 6.
Canterbury earthquake activity pretty standard and. Feb 24, 2011 aftershock a few minutes after initial earthquake outside christchurch convention centre. Aftershocks, 22 february 2011 to 11 february 2012 historic. 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. The probability of one or more earthquakes of magnitude 5. Christchurchs strongest local earthquake in more than a year may have been. Feb 22, 2011 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 surface fault trace is shown as red line segments. The earthquake occurred more than five months after the 4 september 2010 earthquake, but is considered to be an aftershock of the earlier quake. The science behind the new zealand quake live science. This earthquake unsettled many people and that is perfectly normal. The death toll is expected to climb after major destruction in the new zealand city. 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. The earthquakes epicentre was near lyttelton, just 10 km southeast of christchurchs central business district.
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. 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. With this in mind ive reused the framework from another mapping project im working on, and put together a time lapse video displaying. 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. The fault that caused the canterbury earthquake on 4 september 2010. 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.
As at this morning, nearly 8000 people had reported feeling the 9. In september 2010, christchurch was shaken by the magnitude 7. 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. Christchurch and canterbury earthquakes christchurch. How communities in christchurch have been coping with. Use features like bookmarks, note taking and highlighting while reading the insurance aftershock. Christchurch earthquakes of 201011 new zealand britannica. 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. New zealands christchurch hit by series of earthquakes. 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 was felt from christchurch through to auckland, according to geonet.
Geonet data centre manager explains seismic waves and whats been observed in. The focal mechanisms of both shocks indicate mostly pure strikeslip motion, probably dextral strikeslip along a northeastsouthwest oriented. It will take decades for canterbury to return to pre2010 quake levels. About 10 hours after the huge quake hit, geonet had recorded 232 aftershock events. At the time it was still recovering from the effects of a 7. We forecast aftershock probabilities for the area in the red box on the map below. All earthquakes in the christchurch region since september 2010. Five years of rebuilding christchurch, as seen from the sky.
Two days after an earthquake levelled central christchurch, the disaster was documented from the sky. Large earthquakes strike southeast of christchurch. Monday 28 september the new zealand response to the 22. How communities in christchurch have been coping with their earthquake article pdf available in new zealand journal of psychology 404. The severest of those events were the earthquake magnitude from 7. 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. Airbridge logistics an airbridge is the route and means of delivering material from one place to another by an airlift. Nasa has published a map linking the september 2010 7. Canterbury earthquake and associated aftershock epicentres source. While geonet monitors geohazards 247 we do not monitor this facebook page 247 please read more info below. Gns science and geonet developed aftershock forecasts based on the. But, given its location, it was more widely felt and more damaging. The june 2011 christchurch earthquake was a shallow magnitude 6. Dec 22, 2011 christchurch is still recovering from the earthquake in february that killed 182 people and destroyed much of the downtown area.
The earthquakes that have struck near cheviot in canterbury over the last day are part of a common aftershock pattern, according to geonet. Timelapse visualisation of the june 2011 earthquake and its aftershocks in christchurch and canterbury, new zealand. Aftershocks, triggered earthquakes, and christchurchs. Christchurch city mayor, bob parker, now refers to the 2010 darfield earthquake as just the warm up event. Hidden fault canterbury quake recent events natural. Just another reminder that the christchurch aftershock sequence is still ongoing. Download it once and read it on your kindle device, pc, phones or tablets. 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. Christchurch quake was aftershock from 2010, scientists say.
All we have now is the cleanup of sewerage and damage and the endless hagglingbickeringbitching over saving heritage buildings. The quake was centred 10km southeast of the city at a depth of 5km. The death toll is expected to climb after major destruction in the new zealand city from a 6. The hidden fault that caused the february 2011 christchurch earthquake more information.
An aftershock is a smaller earthquake that occurs after a previous large earthquake, in the same area of the main shock. Christchurch is still recovering from the earthquake in february that killed 182 people and destroyed much of the downtown area. Five years on, updated aerial imagery taken earlier this year gives a stark view of the. Christchurch quake map earthquakes since june 2011.835 1364 917 118 210 398 1072 1333 397 1425 176 217 597 471 525 774 1325 81 1303 191 276 281 269 1454 1042 1474 343 870 968 208 1341 937 995 404 478 103