Following the Christchurch earthquake of 22 February 2011 a number of researchers were sent to Christchurch, New Zealand to document the damage to … 185 people were killed in the February earth quake … BGS geologist caught up in Christchurch earthquake; EEFIT mission to Christchurch; The BGS detected a 6.3 Mw earthquake at 23:51 UTC on 21 February 2011 located near Christchurch, South Island, New Zealand.. Reports indicate that at least 154 people have been killed and many are still trapped under rubble as a result of buildings collapsing during the earthquake. - The Southland Times. . This was the second major earthquake to hit the city; the previous quake occurred on 4 September 2010 and registered at a 7.1 magnitude. On 22 February 2011, a 6.3 magnitude earthquake struck Christchurch shortly before 12:50pm at a shallow depth of four kilometres. In this study, we investigate the precision of high-rate GPS displacements and estimate the feasibility of using GPS for seismology study in Taiwan. The 22 February 2011 Mw 6.2 Christchurch (Lyttelton) earthquake was a particularly severe test for both modern seismically designed and existing non-ductile reinforced concrete (RC) buildings. This method uses a reference event to correct for source and propagation … The 22 February 2011 M w 6.2 Christchurch (Lyttelton) earthquake was a particularly severe test for both modern seismically designed and existing non‐ductile reinforced concrete (RC) buildings. The Christchurch earthquakes of 2010 and 2011 had terrible consequences for the city. Some 16.2 % of 833 buildings with RC systems within the Christchurch central business district (CBD) were severely damaged. Introduction [2] Earthquakes displace the ground during rupture and create seismic waves, which induce dynamic displacements that travel around the globe. There are three types of seismic waves, Primary (P waves), Secondary ... liquefaction, tsunamis and damage to buildings depending on where an Earthquake occurs. Saved by Robyn Rae. Christchurch City was made up of approximately 145,000 dwellings at the time of the earthquake, with approximately 10,000 of those listed as unoccupied .According to the 2006 census, 7.4% of residents living in Christchurch considered themselves … ... With resets peaking in mid defaults will probably peak in early Q4 2011; this means foreclosure listings will peak in … The M w 6.0 (M L 6.4) Christchurch earthquake on 13 June 2011 was preceded 1 h 20 min earlier by a M L 5.6 earthquake; these events and related aftershocks were located primarily in southeast Christchurch along a NNW-trending alignment, although some large aftershocks (e.g., 21 June 2011 M L 5.4; Table 1) continued to occur in the gap between the … The fault was practically within ... February 2011 earthquake. Some 16.2 % of 833 buildings with RC systems within the Christchurch central business district (CBD) were severely damaged. Large-amplitude surface waves from the 2011 Tohoku-Oki earthquake triggered many seismic events across Japan, while the smaller amplitude P-wave triggering remains unclear. Darfield earthquake (e.g., Gledhill et al. The damage in Christchurch was far more substantial than the damage caused in the 7.1 earthquake only 5 months before. At the time it was still recovering from the effects of a 7.1-magnitude earthquake on 4 September 2010.Though smaller than the first quake, and technically part of its aftershock sequence, the February earthquake was more destructive. All of the earthquakes occurred on previously unknown faults. Friday, March 4, 2011. The 2011 Tohoku-Oki earthquake (M w 9.0) provided us with an important opportunity to better understand seismic wave velocity changes occurring at shallow and deeper zones in the crust, because seismic waves are recorded by high-density seismic networks in a wide area of NE Japan that is subject to strong motions and large deformations. [DRAFT Article in-process] These images were taken in 2014 when reconstruction efforts in Christchurch included a mix of ongoing demolition and removal of un-safe structures as well as repair, reinforcement, and new construction of replacement buildings. The surface energy of the seismic waves from the earthquake was calculated to be 1.9×10 17 joules, which is nearly double that of the 9.1 M w 2004 Indian Ocean earthquake and tsunami that killed 230,000 people. The 22 February 2011 Christchurch earthquake was caused by a local fault just beneath the Port Hills to the south of Christchurch. Civil defence declared a category 3 … earthquake seismic waves images Seismic waves ; Video about seismic waves and; JazzByTheBay. Lessons from the Christchurch earthquakes 1 Changes in preparedness and earthquake risk perception: Lessons from the 2010 and 2011 Canterbury earthquakes John McClure [1], David Johnston [2], Liv Henrich [3] 1, 3 Victoria University of Wellington 2. Photos of earthquake damage in Christchurch NZ, caused by the 2010 & 2011 earthquakes and their after-shocks. Massey University / GNS(Science), Joint Centre for Disaster Research Report for EQC A spectral method was used to detect seismic events triggered by the first arriving P-waves over Japan. "At M6.2, this earthquake was about the same size as the February 2011 Christchurch earthquake which was very shallow; therefore, you would expect similar results if it was the same depth. The 22 February 2011 M w 6.2 Christchurch (Lyttelton) earthquake was a particularly severe test for both modern seismically designed and existing non‐ductile reinforced concrete (RC) buildings. Earthquake warning system may save lives Earthquake warning system may save lives . 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 Earthquake Seismic waves are energy that travel through the earth's layers, and are caused by the release of energy from the earthquake. 2012) that resulted in 185 fatalities. However, the violent magnitude 6.3 earthquake that devastated Christchurch on 22 February 2011 was caused by movement along a fault that does not appear to have broken the surface. The seismic moment (M 0), which represents a … At 12.51 p.m. on 22 February 2011, the Canterbury region was struck by a magnitude 6.3 earthquake. If harnessed, the seismic energy from this earthquake would power a city the size of Los Angeles for an entire year. 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. Most earthquakes occur on fault lines which are cracks in Earth’s crust and travel in seismic waves. Case study: Christchurch 2011 (HIC) Causes. In the case of the Christchurch earthquakes, ... February 22nd 2011. The earthquake struck the city of Christchurch in New Zealand on 22 February 2011. The critical lessons learned from the September 2010 M 7.0 Darfield earthquake—and its major aftershock, the February 2011 M6.2 Christchurch earthquake—and the November 2016 M7.8 Kaikoura earthquake, as well as worldwide earthquakes such as the 2011 M9.0 Tohoku, Japan, earthquake, have served to inform AIR’s views of seismic risk in New … By studying the causes and impact of the earthquakes, scientists now understand more about the processes involved. Several aftershocks were reported, some registering at a 5.6 magnitude. Charles ... the research said.The research involved analysing the seismic waves … On Tuesday 22nd of February 2011 there was a 6.3 magnitude earthquake at 12:51pm. Christchurch earthquake: Deadly tremors rebounded on city 24 Feb, 2011 04:30 PM 3 minutes to read The Timeball Station, on the hill above Lyttelton, was badly damaged. However, due … One hertz observations of 210 continuous GPS Nearly six months later on 22 February 2011 at 12:52pm, the city of Christchurch was ... which stayed in place until 30 April 2011. The main city in the region is Christchurch, with approximately 370,000 people living there prior to the earthquake sequence. Christchurch Earthquake Feb 2011. [1] Surface waves generated by the 2011 Mw 9.0 Tohoku, Japan earthquake were recorded by both the high-rate GPS and broadband seismic stations in Taiwan. This release of energy causes the crust to move, rip, and tear causing a lot of damage if close to the surface. 2011) and three subsequent earthquakes of Mw ≥ 5.9, most notably the 22 February 2011 Mw6.2 Christchurch earthquake (e.g., Kaiser et al. More destruction was caused by the February 2011 earthquake rather than the larger magnitude September 2010 for several reasons. Sensors detect early-stage waves from an earthquake before more damaging seismic waves propagate. The epicentre of the February quake was located only 10km to the south-east of Christchurch and only 5km deep, therefore, causing more intense shaking as compared to the epicentre of the September quake which was located 40km west of the city … The unusually strong shaking might have been made worse by seismic lensing, with seismic waves being reflected off the hard basalt rocks of the Port Hills. Some 16.2 % of 833 buildings with RC systems within the Christchurch central business district (CBD) were severely damaged. Within the last decade, high‐rate kinematic Global Positioning System (GPS) methods [Larson et al., 2003] have been developed to provide ground displacements complementary to seismic records.. Canterbury earthquakes were highly unusual. It was the fourth-largest seismic event ever recorded, outranked only by the 2004 Indonesian and 1964 Alaskan earthquakes (both 9.2) and the enormous but less well-known 1960 Chilean earthquake… Christchurch earthquake: Trial quake warning system gives vital seconds to get clear 9 Mar, 2011 04:30 PM 3 minutes to read Warnings can only be sent to smartphones and computers. Christchurch Earthquake 2011. As seismic waves propagate through the softer alluvial soils, from the basement rock 1. 06-05 01:41 AM. This new understanding will help them to forecast similar events in the future. Christchurch. Saved by Robyn Rae. 4 ... Christchurch Earthquake Feb 2011. Struck the city of seismic waves christchurch earthquake 2011 in New Zealand on 22 February 2011 earthquake were... More about the processes involved forecast similar events in the case of the earthquakes, scientists understand... 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