Liquefaction occurs in saturated soils, that is, soils in which the space between individual particles is completely filled with water. One person died from a heart attack, possibly caused by the shock of the earthquake, but there wer… It is believed that the Christchurch area was first settled in 1250 by tribes hunting the now-extinct … Feb 4, 2014 - Explore Angela Turra's board "Earthquake", followed by 898 people on Pinterest. Aftershocks have generally been occurring at the expected rate following the main Canterbury shock. The 2010 Canterbury earthquake (also known as the Darfield earthquake) struck the South Island of New Zealand with a moment magnitude of 7.1 at 4:35 a.m. local time on 4 September, and had a maximum perceived intensity of X (Extreme) on the Mercalli intensity scale. A state of emergency was declared by Civil Defence for Christchurch and the Selwyn District. 1 earthquake within a radius of 150km of central Christchurch over 24 hours. The scale quantifies the intensity of ground-shaking and destructiveness of an earthquake from MM1 (smallest) to MM12 (cataclysmic). The Darfield earthquake At 4.35 a.m. on Saturday 4 September 2010, Canterbury was rocked by a magnitude 7.1 earthquake centred near Darfield. Thousands of people were made homeless. The 2010 earthquake was centred about 80–90 km to the southeast of the plate boundary through the island, probably on one of a network of smaller faults linked to the main faults that mark the plate boundary itself. You can get involved by voting in elections, contacting an MP,  making a submission or petitioning Parliament. The quake caused damage to historic buildings in Lyttelton, near Christchurch, including a church and parts of a hotel. Geonet - http://www.geonet.org.nz/about/index.html - is a joint project between GNS and the Earthquake Commission. On June 17 another strong earthquake impacted Osaka Japan, resulting in insured losses of at least $935 million. The 2010 Canterbury earthquake measured 7.1 on the Richter Scale and struck the South Island of New Zealand at 4:35 am on the 4th of September 2010. Tension builds up as they scrape over, under or past each other. The quake struck the city of 350,000 people and the surrounding Canterbury region at 4:35am. 161-179 Victoria Street.JPG 4,000 × 3,000; 4.28 MB GNS Science. The Canterbury quake caused extensive damage to certain buildings in Christchurch, in addition landslides occurred in the Rakaia Gorge and flooding where the Hororata River had burst its banks. It acts as a gateway to central and local government resources, news and services. The facade of the Repertory Theatre was extensively damaged. Luck played a part-the quake occurred at … Canterburyearthquake.govt.nz - http://www.canterburyearthquake.govt.nz/ - is a New Zealand government website. Most (though not all) earthquakes occur at faults, which are breaks extending deep within the earth, caused by the movement of these plates. World. (2010, September 7). Liquefaction is a phenomenon in which the strength and stiffness of a soil is reduced by extreme shaking. Earthquake christchurch today. (This is 23:51 21 February UTC). The Canterbury earthquakes are not the largest earthquakes in New Zealand's history, but the February quake has lead to more costly damage than for any other natural disaster in New Zealand. In the South Island, these plates mainly slide past each other horizontally, producing earthquakes along fault lines such as the Alpine fault. Aftershocks are caused by movement along a fault, and at the tips of the fault, in areas that did not rupture during the main earthquake. Canterbury fault had not ruptured for at least 16,000 years. New Zealand sits on the boundary between the Australian and Pacific plates. However, earthquake shaking can cause the water pressure to increase to the point where the soil particles can readily move with respect to each other and the soil behaves as a liquid. It was centred 40 km west of Christchurch, near the town of Darfield, at a depth of 10 km. 230,000 people died, 300,000 had been injured and 1,000,000 made homeless. No one died, but buildings in Christchurch were damaged. The website provides free access to a wide range of resources. The point under the ground where the earthquake actually begins is called the hypocentre or focus, while the place directly above it on the surface is known as the epicentre. The 2010 Canterbury earthquake (also known as the Darfield earthquake) struck the South Island of New Zealand with a moment magnitude of 7.1 at 4:35 a.m. local time on 4 September, and had a maximum perceived intensity of X (Extreme) on the Mercalli intensity scale. The Canterbury earthquake has been given a MM9 rating. Understanding what causes earthquakes, where and why they happen, is essential in being prepared for further emergencies. This water exerts a pressure on the soil particles that influences how tightly the particles themselves are packed together. (2010, September 6). Facts From the Christchurch NZ EarthQuake 4th Sept 2010 This post was taken from Wikipedia, the free encyclopedia. On the 4th of September 2010 at 4.35 am the people of Christchurch, the Canterbury area and many other parts of New Zealand were jolted awake by a 7.1 magnitude earthquake. In contrast the Fiordland earthquake on 15 July 2009 of magnitude 7.8, was given an intensity measurement of MM7 because it occurred in an isolated area and there was only a small amount of damage to buildings reported in Invercargill. The severest of those events were the earthquake (magnitude from … Media in category "Buildings damaged by the 2010 Canterbury earthquake" The following 31 files are in this category, out of 31 total. [1] The 2010-2011 Canterbury earthquake sequence The Darfield earthquake occurred at 4:35 am (New Zealand Standard Time, NZST) on 4 September 2010, causing no fatalities and few injuries. 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. The Richter scale has been superseded by the moment magnitude scale, which is calibrated to give generally similar values for medium-sized earthquakes (magnitudes between 3 and 7 on the Richter scale) but measures larger earthquakes with greater accuracy. The 2010 Canterbury earthquake was a powerful 7.1 magnitude earthquake, which struck the South Island of New Zealand at 4:35 am September 4, 2010 local time (16:35 3 September UTC).It was centred 40 km west of Christchurch, near the town of Darfield, at a depth of 10 km. Liquefaction is more likely to occur in loose to moderately saturated granular soils with poor drainage, such as silty sands or sands and gravels containing seams of impermeable sediments. GeoNet operates a modern geological hazard monitoring system in New Zealand. GeoNet. The 2010 Christchurch earthquake that struck the Canterbury region of New Zealand on September 4, 2010 registered 7.1 on the Richter scale and left 2 dead and 100 injured. Scientists from the Institute of Geological and Nuclear Sciences (GNS) think it is the first time this fault has moved in several thousand years, and it is unlikely that it will move again for another few thousand years. During the Canterbury earthquakes of September 2010 and February 2011, liquefaction caused silt and fine sand to boil up and bury streets and gardens and caused buildings and vehicles to sink. The main quake was felt widely across the South … The Canterbury region has had six months of unexpected and extremely difficult challenges as a result of a sequence of damaging and deadly earthquakes and the associated aftershocks. Giv en that such a time frame. Effects of this earthquake included falling buildings and the … Tourism infrastructure in Canterbury and Christchurch is operating as usual. This morning's magnitude 7.1 quake hit at 4.36am. At 4:35 am on 4 September 2010, there was a magnitude 7.1 earthquake. For the severe aftershock of 22 February 2011, see 2011 Christchurch earthquake. Learn 2010 Canterbury earthquake facts for kids. The 1855 Wellington earthquake had an estimated magnitude of 8.2, the Napier earthquake of 1931 was 7.8, and the recent Canterbury earthquake was of magnitude 7.1. The total cost of damages may be as high as NZ$2 billion. Darfield earthquake damages Canterbury. It was centred 9 km southeast of the town of Darfield, 40 km west of Christchurch (all locations mentioned in the text are in Fig. Geotechnical Reconnaissance of the 2010 Darfield (New Zealand) Earthquake, Report. A New Zealand Crown entity investing in natural disaster research, education and providing insurance to residential property owners. Facts Why was the magnitude 6.3 earthquake able to cause so much more destruction in the CBD and Christchurch suburbs than the magnitude 7.1 quake last September? On 4 September 2010 a moment magnitude (M w) 7.1 earthquake occurred near the small town of Darfield in the Canterbury Plains of the South Island of New Zealand (; Fig. Since then, thousands of quakes have rattled the region, the most damaging a magnitude-6.3 on February 22 last year, which claimed 185 lives. 1).While many older brick and masonry buildings were damaged and approximately 100 people were injured in this earthquake, there were no associated deaths. Strong aftershocks were reported, including ones of magnitude 5.3. These plates are in constant motion, travelling at a few centimetres per year. This is largely due to the earthquake taking place in … Home; Starting on: 4 September 2010; 22 February 2011; 13 June 2011; 23 December 2011; Big Quakes; Largest 25; Latest 25; Today; Past week; Other … Businesses in the city centre were closed the day of the quake. During the earthquake, the shaking caused liquefaction of these layers which resulted in soil being discharged to the surface. New Zealand lies on the boundary of the Pacific and Australian tectonic plates. Mercalli was an Italian seismologist (and priest) who developed his scale for measuring quakes in the early 20th century. (2010, September 6). Geotechnical Reconnaissance of the 2010 Darfield (New Zealand) Earthquake, Report This is a list of large earthquakes that have occurred in New Zealand.Only earthquakes with a magnitude of 6.0 or greater are listed, except for a few that had a moderate impact. See our pages for kids on the 4 September 2010 and 22 February 2011 earthquakes. Sampling included organisations proximal and distal to the fault trace, organisations located within central business districts, and organisations from seven diverse industry sectors. Central Kaiapoi suffered major damage; many of the town's buildings had to be bulldozed as a result of the 2010 earthquake and subsequent quake in February 2011. Major fault zones in New Zealand, with the plate boundary and relative motion of the Pacific Plate shown, Building damage in Worcester Street, corner Manchester Street, with Christchurch Cathedral in the background. Around six months later, at 12:51 pm on 22 February 2011, a magnitude 6.3 earthquake hit south-east of Christchurch. Strong aftershocks were reported, including ones of magnitude 5.3. The 2011 Christchurch earthquake was a 6.3 magnitude earthquake which struck the South Island of New Zealand at 12:51 pm on 22 February 2011 NZT. In the first eighty years of European settlement in Christchurch (1850–1930), four earthquakes caused significant damage, the last of these centred at Motunau on the North Canterbury coast in 1922. Tectonic plates are large plates of rock, about 100km in thickness, that make up the foundation of the earth's crust and the shape of the continents (like pieces of a giant jigsaw puzzle). The magnitude-7.1 earthquake struck 11km beneath Darfield at 4.35am on September 4, 2010. It is a previously unknown fault under the Canterbury Plains. It was centred 40 km west of Christchurch, near the town of Darfield, at a depth of 10 km. The size of an earthquake is referred to as its Magnitude (although the Richter scale is often used interchangeably by the non-scientific community). Disclaimer. Parliament's decisions affect all New Zealanders. In the United States, a magnitude 7.0 tremor struck near Anchorage, Alaska on November 30. losses totaled more … It was about 5 km underground. Earthquake Commission and GNS Science. Prior to an earthquake, the water pressure is relatively low. Elisabeth Bowman. The first sign of a quake is often the rumbling sound caused by the ‘P’ (primary or push) waves travelling at about 20,000 kilometers an hour. 2010 Canterbury earthquake Other areas, where the movement is not constant, are prone to stronger quakes separated by longer periods of time. It has been known as the Greendale, Darfield, Rolleston, September or Canterbury Earthquake. The fault that caused the Canterbury earthquake on 4 September 2010 has been named the Greendale Fault. 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