liquefaction new zealand earthquake 2011

New Zealand on Monday marked 10 years since an earthquake struck its South Island city of Christchurch, killing 185 people, injuring thousands and leaving a trail of destruction. 2013 Conference of the New Zealand Society for Earthquake Engineering (NZSEE 2013), 26â28 April, Wellington, New Zealand. These earthquakes were centred near Sumner, approximately 10km south-east of the CBD. New Zealand Earthquakes. However, large-magnitude earthquakes cause damage in â¦ On 23 December 2011â¦ A series of earthquakes followed, with the strongest on February 22, 2011â¦ On 4 September 2010, a magnitude M = 7.1 earthquake struck the Canterbury region on the South Island of New Zealand. New Zealanders showed resilience in the aftermath of the quake that rocked Christchurch in autumn of 2010. Wellington was considered the riskiest city in New Zealand for earthquakes and liquefaction was a well-known issue. Liquefaction has proved to be one of the major geotechnical issues caused by earthquakes. Although the topic has been studied since the 1960s, new questions are emerging. Monitoring Earthquakes . The Darfield earthquake (Mw 7.1; ML 7.2) occurred along a previously unknown strike-slip fault in Canterbury Province, New Zealand on 4 September 2010. As the earthquake struck at a busy time and at the town centre, a busy place more, damage and casualties happened then the previous 7.1 magnitude earthquake in 2010 than the 6.3 magnitude earthquake in 2011â¦ Widespread soil liquefaction, and associated ground deformation (failures) and lateral spreading shattered the lifelines and infrastructure over approximately one third of the city area. Key Words: Christchurch earthquake, earthquake damage, liquefaction, residential buildings, pipe networks INTRODUCTION In the period between September 2010 and December 2011, Christchurch (New Zealand) and its surroundings were hit by a series of strong earthquakes including six significant events, all generated by â¦ damaged by liquefaction during the 2011 Christchurch, New Zealand, earthquake. The magnitude 6.2 22 February 2011 earthquake â¦ Very large to moderate earthquakes in the 2010â2011 Canterbury sequence induced liquefaction in parts of Christchurch city and the surrounding region on the South Island of New Zealand. Yet a far more devastating earthquake â¦ Canterbury earthquake sequence in New Zealandâs central South Island. The epicenter of the earthquake was located near Darfield, about 40 km west of the central business district (CBD) of the city of Christchurch and at a depth of about 10 km. Green, Brendon Bradley, and David Jacobson Abstract The 2010â2011 Canterbury earthquake sequence (CES) caused up to 10 episodes of liquefaction at highly â¦ The publication and distribution of this report were funded by the EERI grant from NSF. Detailed information gathered about this case of recurrent liquefaction offers important lessons for the study of paleoliquefaction features â¦ Bibliography Unsupported source type (Misc) for source Pla14. The waste water system was hit particularly hard, whereas â¦ Here, we use object-based image analysis (OBIA) of aerial photography and light detection and ranging (LiDAR) data to map the occurrence of liquefaction ejecta following the 22 February 2011 earthquake in Christchurch, New Zealand. Because every earthquake is different and groundwater levels move up and down over time, the liquefaction damage from a future earthquake could be different to what occurred during the 2010-2011 â¦ the New Zealand Earthquake Commission (EQC) funded an extensive subsurface character-ization program for Christchurch, with over 10,000 CPT soundings performed to date. In the South Island of New Zealand, a sequence of earth-. Its purpose was to distinguish at a regional scale areas of land that, in the event of strong ground shaking, may be susceptible to damaging liquefaction â¦ The 2010â2011 New Zealand earthquake sequence. The amount of liquefaction damage that occurs in an earthquake depends not only on the soil conditions, but also on the strength of earthquake shaking and the groundwater level at the time. Liquefaction susceptibility has been mapped in most areas of Canterbury to show whether liquefaction is possible, or unlikely, during strong earthquake shaking. Sensitivity of predicted liquefaction-induced lateral displacements from the 2010 Darfield and 2011 Christchurch earthquakes, in Proc. Instinctively, Kiwis knew what they â¦ A series of earthquakes has shaken the New Zealand city of Christchurch, sending residents rushing from buildings and causing minor damage. Earthquake Hazards. Following the damaging 4 Sept 2010 Mw7.1 Darfield Earthquake, the 22 Feb 2011 Christchurch Earthquake and subsequent damaging aftershocks, we completed a liquefaction hazard evaluation for c. 2700 km2 of the coastal Canterbury region. Liquefaction is a well known natural process in Christchurch following the 2010/2011 Canterbury earthquakes. Liquefaction has been reported following upwards of 13 recent and historical earthquakes in New Zealand. Earthquakes. This was a new phenomenon for most New Zealanders, yet it has been a feature during earthquakes â¦ Misko Cubrinovski. Read more about sharing. 2010-2011 CHRISTCHURCH (NEW ZEALAND) EARTHQUAKES. Both earthquakes caused extensive liquefactionâ¦ of strong local earthquakes that hit Canterbury, new Zealand, in 2010-2011. Earthquake - What to do? Recurrent liquefaction in Christchurch, New Zealand, during the Canterbury earthquake sequence Mark C. Quigley1, Sarah Bastin1, and Brendon A. Bradley2 1Department of Geological Sciences, University of Canterbury, Christchurch 8014, New Zealand 2Department of Civil and Natural Resources Engineering, University of Canterbury, Christchurch 8014, New Zealand â¦ In this extreme example, sand covered the road due to ground-surface subsidence and sand blows. Most earthquake damage is caused by ground shaking. The RMS® New Zealand Earthquake HD Model incorporates important lessons learned from the 2010-2011 Canterbury Earthquake Sequence (CES). Abstract. New Zealands Largest Fault. These earthquakes caused further damage in Christchurch and localised areas outside the city. The earthquakes produced strong ground motions, and were very damaging. New Zealanders are used to earthquakes - children learn safety drills in schools - but engineers estimated this level of damage was a one in 2500-year event. The Canterbury earthquake of 2011 in New Zealand caused extensive liquefaction damage to residential areas, and became the fourth most costly earthquake for insurers worldwide. The OBIA achieved an 81.8 % overall accuracy for an initial classification that identified the presence or absence of liquefaction â¦ Evidence of liquefaction in Christchurch, New Zealand . Gallery. Extensive damage was inflicted on lifelines and residential houses due to widespread liquefaction â¦ Despite aftershocks, the prevailing attitude was positive and people were eager to pick up the pieces and get on with their lives. Earthquakes at a Plate Boundary. Lesson Plans. The 2010-2011 Canterbury earthquake sequence included a number of events that triggered recurrent soil liquefaction at many locations in Christchurch, New Zealand. In response to that, the Canterbury's Earthquake Commission (EQC) undertook a research program aiming at identifying cost effective and practical ground improvement methods to strengthen the prone to liquefaction â¦ Major Faults in New Zealand. quakes during 2010â2011, starting with the 4 September 2010. At 12:51 p.m. on Feb. 22, 2011, the 6.3 magnitude earthquake struck close to Christchurch city at a depth of 5 km. Earthquakes and Faults. Liquefaction â¦ Links. Introduction At 12:51 pm local time on February 22, 2011, an M 6.3 earthquake shook the city of Christchurch, New Zealand â¦ Videos. M. w7.1 Darfield earthquake and including the most damaging. This was the liquefaction coming up.â The 2011 earthquake which shook Christchurch claimed 185 lives. The combination of well-documented liquefaction response during multiple events, den-sely recorded ground motions for the events, and â¦ Google Scholar Evidence of Plate Tec Tonic Theory . The second (Christchurch) earthquake (Mw = 6.2) on 22 February 2011, caused by a thrust fault, affected the same region. It is one of the most costly phenomena and has affected several cities around the world. Air New Zealand generously provided reduced fares for EERI team members. The CES started as a magnitude (M) 7.1 earthquake on September 4, 2010, some 40 kilometers west of Christchurch. 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 maps are mainly based on the underlying geology (for example, rock, old river gravels, relatively young estuary silts) and on borehole and groundwater â¦ ASTRONOMY 161. The earthquakes of Chile in 2010, New Zealand in 2010 and 2011, and Japan in 2011 â¦ University of Canterbury Christchurch 8140, New Zealand ABSTRACT A series of strong local earthquakes hit the city of Christchurch (New Zealand) in the period between September 2010 and December 2011. Virtual Tours. 3 000 buildings in total were inspected, of that total 45% were deemed unsafe and were given a yellow or red sticker. Liquefaction is a process that temporarily turns firm ground into a liquid. Two significant earthquakes, of M W 5.6 and M W 6.0 respectively, occurred in the Christchurch area on 13 June 2011. Although not as â¦ Collating reports outlining the extents of liquefaction manifestation following these events provides insights into the distributions of sediments with low cyclic resistances to liquefaction, and enables liquefaction â¦ Image courtesy of Mark Lincoln. 22 February 2011 M. w6.2 Christchurch earthquake (Fig. The M 6.3 Christchurch, New Zealand, Earthquake of February 22, 2011 Technology, and the U.S. Geological Survey. Understanding liquefaction vulnerability helps guide decisions about future land use and designing infrastructure and â¦ Liquefaction during the 2010â2011 Canterbury Earthquake Sequence, New Zealand by Sarah H. Bastin, Kari Bassett, Mark C. Quigley,* Brett Maurer, Russell A. Home / Learning / Science Topics / Earthquakes / Gallery / Liquefaction Damage, Christchurch, February 2011. On four occasions, 4 Sept 2010; 22 Feb, th13 June and 23 Dec 2011 (as at 28 of March 2012), large earthquakes induced widespread liquefaction phenomena across the Christchurch urban area that resulted in widespread ejection of silt and fine sand, â¦ Credit: AP.