Fault movement. This meant the ground could no longer support the foundations of many buildings, causing them to subside. Golf ball hail rained down on the people of Christchurch. New zealand and the christchurch earthquake 2 1. In the CBD the Christchurch earthquake was 3 times more powerful and destructive than on land in Japan. Compulsory The events around Canterbury are examples of common geological phenomena associated with earthquakes. Early on 4 September 2010, a magnitude 7.1 earthquake occurred on an unrecorded fault near Darfield, 40 km west of Christchurch and just 10 km below the surface. It caused extensive damage to property, and aftershocks also caused injury and loss of life as well as lasting social upheaval. Seconds later, the Greendale Fault just to the south ruptured. Earn Transferable Credit & Get your Degree, Get access to this video and our entire Q&A library. The 22nd February earthquake in Christchurch triggered extensive landslides and rockfalls in the Port Hills area to the east of the city. Photos of Christchurch Electrical Storm - Sept 2012 All rights reserved. Earthquake intensity map The peak ground acceleration (PGA) in central Christchurch exceeded 1.8 g (i.e. answer! Underground infrastructure, such as water and sewage pipes, was also destroyed. Create your account. Its magnitude was 6.3, and it was felt in many areas of the island. EQRNet is a dense network of more than 150 ground-based accelerometers which allows the council to better manage its earthquake response using real-time information. New Zealand and the Christchurch Earthquake 2. How long was the fault? - Definition & Explanation, Working Scholars® Bringing Tuition-Free College to the Community. Curious Minds is a Government initiative jointly led by the Ministry of Business, Innovation and Employment, the Ministry of Education and the Office of the Prime Minister’s Chief Science Advisor. Q. Interference between waves amplified the ground acceleration in some places and reduced it in others. It was a relatively shallow earthquake – about 10 kilometres below the surface of the Canterbury Plains. The most severe shaking in the February earthquake only lasted a few seconds but in places reached a PGA of 2.2 g. This was unusually high, especially for an earthquake of ‘only’ magnitude 6.3. That’s four times as much of a shake as they’re designed for. A GNS scientist explains rockfalls and his research after the Christchurch earthquake. In February most of the city was without power. - Definition and Components, What Are Cyclones? On Tuesday 22nd of February 2011 there was a 6.3 magnitude earthquake at 12:51 pm. There was a great deal of ground movement in the Christchurch earthquake, resulting in the damage of many buildings and the loss of 183 lives.... See full answer below. The Christchurch earthquake was a 6.3, and the real hard volcanic rock from the old volcano accelerated the movement, so we had more than two times the force of gravity shaking the city. Q. The 2010 shallow event took place ~45 km west of Christchurch at 4:35 AM local time. Q.When did this particular fault last move,and how can scientists decide this? The earthquake occurred on New Zealand’s South Island, 10km west of Christchurch, at 12.51pm on 22nd February 2011 and lasted just 10 seconds. Along 24 km of this fault, ground on either side shifted horizontally up to 5 m and vertically up to 1.3 m. Aftershocks were concentrated at the east end of the fault towards Christchurch as rock distorted by the original earthquake adjusted to new stresses. Scientists from many countries work with New Zealand researchers to study the Alpine Fault and the Canterbury earthquakes, and their information is shared around the world. Become a Study.com member to unlock this At 12.51 p.m. on Tuesday 22 February 2011, a magnitude 6.3 earthquake caused severe damage in Christchurch and Lyttelton, killing 185 people and injuring several thousand. Along 24 km of this fault, ground on either side shifted horizontally up to 5 m and vertically up to 1.3 m. Update: 5/9/10 More useful links: An earthquake near Christchurch in September 2010 started a chain of events still being felt over 2 years later. Peak ground acceleration (PGA) is a measure of movement compared to the acceleration of gravity, which is 1 g (9.8 m/s2). Photos of damaged buildings and roads in and around Christchurch. What is the history of earthquakes in Haiti? © copyright 2003-2021 Study.com. Shaking in the centre of Christchurch, which caused a lot of damage, was much stronger than in the 4 September 2010 earthquake, partly because it was much closer to the epicentre. The earthquake was accompanied by a large surface rupture. Electricity to 75 per cent of the city was cut in the September quake. Shaking caused damaging landslides and rockfalls on steep slopes and cliffs, especially in Lyttelton, Sumner and Redcliffs. These mass movements resulted in at least five fatalities, and many homes were damaged. The Canterbury earthquakes did not dislodge enough rock underwater to cause any tsunamis off the South Island. MetService meteorologist Dan Corbett described the event as a "one-in-10-year event or may be even rarer". Sciences, Culinary Arts and Personal Between the September 2010 earthquake and mid-July 2012, the Canterbury region experienced: The vertical acceleration of the ground during the 22 February 2011 earthquake was the highest ever recorded in New Zealand and one of the highest in the world. We are also interested in determining whether time-varying stresses following the Dusky Sound earthquake could have altered the stress state in Canterbury in such a way … Effects in Christchurch. 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. This helps scientists build models of plate movement, seismic activity and mountain building. At Fukushima, ground acceleration was .35 gravity. International agencies also came to the aid of Christchurch. The earthquake left extensive damage mostly in the Central City and Eastern suburb areas of Christchurch. Although it was relatively powerful—6.3 magnitude—it was still weaker than … This fell into Tasman Lake and created waves up to 3.5 m high. A case study of an earthquake in a HIC.. What caused the Christchurch earthquake? A GNS scientist explains P and S waves, especially in relation to the Christchurch earthquakes. Facts – ChristchurchEarthquake • When – 22nd Feb 2011 – 12.51pm • Magnitude – 6.3 • Centred – 10km South East of the city at a depth of 5km • (Believed to be an aftershock of initial quake on the 4th Sept 2010 which was a 7.1 Magnitude) The Christchurch earthquake occurred in Christchurch, New Zealand on February 22, 2011. Which plate boundary and movement commonly create... What is a sudden ground movement caused by sudden... An earthquake was measured to have a magnitude of... What was the impact of the 1964 Earthquake in... Are there any earthquakes on the Indo-Australian... A magnitude 7 earthquake suggests higher ground... Can an earthquake trigger a disease outbreak? Christchurch CDB it was 1.1 gravity. 1.8 times the acceleration of gravity), with the highest recording 2.2 g, at Heathcote Valley Primary School, a shaking intensity equivalent to MM X+. Damaged brick building on Victoria Street in Christchurch - Photo by Ian Chan The fault plane extends a few kilometres offshore, but not much fault movement occurred beneath the ocean. Why was the Great Kanto Earthquake so powerful? The earthquake … There’s some fairly significant ground movements on display here. A reason to why there was so much damage done was because that the land, infrastructure and roads were still either damaged or weak due to the 2010 Christchurch earthquake which had a magnitude of 7.1. many building which were made of stone and brick … Measuring 6.3 on the Richter Scale and, at 4.99 km deep, the earthquake was very shallow. On Tuesday 22nd of February 2011 there was a 6.3 magnitude earthquake at 12:51pm. In July 2018, the Smart Christchurch programme at Christchurch City Council initiated a three-year trial of EQRNet with local company Canterbury Seismic Instruments (CSI). This is due to the deck restraining and increase of the pile bending resistance. The MetService said there were 140 lightning strikes from "cloud to ground" within 150 kilometres of Cathedral Square. That calculation is energy/hectare. How much ground movement was there in the Christchurch earthquake? 185 people were killed in the February earth quake and thousands more were injured. This survey will open in a new tab and you can fill it out after your visit to the site. PGS reached about 30% g and intensities were in the order of VIII at the epicentre, in Christchurch only VI-VII. In Heathcote Valley it got up to 2.1 gravity. ES AT1 2017 Case Study: Christchurch Earthquake Part A: Analysis of Event Analysis of the tectonic movement or process involved The Christchurch earthquake in 2011 was a result of a transform boundary. How much ground movement has there been? Q. In the Christchurch CBD, the ground accelerations produced by the September magnitude 6.3 earthquake were 3-4 times greater than during the 7.1 earthquake; in … Thus, the main damage of the bridge is attributed to the first earthquake. Which state is the MOST "earthquake-prone,"... What is an Earthquake? The damage in Christchurch was far more substantial than the damage caused in the 7.1 earthquake only 5 months before. In September 2010, Christchurch was shaken by the magnitude 7.1 Darfield earthquake, caused by movement along faults west of the city on the Canterbury Plains. Some rocks shaken loose from high on the Port Hills bounced down hundreds of metres onto buildings below. 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