It usually happens with soil that is saturated with water and then shaken.ĭuring earthquakes, the shaking can not only loosen the soil but also cause water to rise up from deeper down, making liquefaction more likely. Soil liquefaction can happen when soil is shaken up, and the tension it can normally hold – which is often enough to hold up roads and buildings – is reduced to nearly zero. There have been reports of widespread liquefaction of soil, particularly on reclaimed land around the Wellington waterfront and the Picton foreshore. The US Geological Survey said the quake measured 5. New Zealands capital Wellington was swayed by a strong earthquake on Wednesday, with residents reporting feeling a sudden jolt and buildings quivering. What is this ‘liquefaction’ people are talking about? An earthquake shook Wellington on Wednesday. Scientists from New Zealand’s GNS Science have said they’re not sure yet which faults were involved. James Goff from the University of New South Wales says: “Yet again, New Zealand’s earthquakes are proving to be anything but easy to understand.” (File) Wellington: The US Geological Survey on Wednesday reported a 6.2-magnitude earthquake off New Zealand's southern coast, near the. They say the plate boundaries have such a complex structure that, with the strain that builds up being applied to many different structures, there may have been more than one fault that caused the earthquake sequence.ĭr Behzad Fatahi from the University of Technology Sydney says: “The complexity of fault lines and tectonic activities is due to the fact that tectonic plates in some locations such as east of the North Island move toward each (creating compressive stresses), and in some other regions such as South Island slide past each other (generating shear stresses), both creating shallow earthquakes.” There are no reports of damage on the New Zealand mainland. Subduction occurs when one plate is pushed down under another plate.īut according to the US Geological Survey, scientists didn’t think that there was any subduction happening where this earthquake occurred. Was it one quake or two?Īccording to the US Geological Survey, the size, depth and direction of the fault points towards a kind of fault called a “subduction zone”, which can cause very large quakes. How New Zealand responds in the week following a large Alpine Fault earthquake is mapped out in a scenario developed by Caroline, the AF8 group, multiple agencies and governments. In very general terms, that movement is causing the two plates to collide, creating tension which is released in earthquakes. To aid this work the University of Auckland has constructed a major new structures test hall on the Newmarket Campus with one of the largest seismic testing walls in Australasia.At the location of the quake, the Pacific plate is moving roughly west at about 40mm a year relative to the Australian plate. Pair who corruptly tried to profit from the Christchurch quake rebuild sentenced Radio New Zealand 07:03 6-Jul-23. WELLINGTON, Feb 15 (Reuters) - A magnitude 6.1 earthquake struck New Zealand near Wellington on Wednesday at a depth of 48 km (30 miles. Former Canterbury Earthquake Recovery Authority workers sentenced to home detention for fraud New Zealand Herald 07:35 6-Jul-23. February 14, 202311:20 PM PSTUpdated 5 months ago. Researchers at the University are examining ways of minimising loss and damage, and speeding recovery, after major earthquakes. Moderate 4.3 quake hits near Nelson, Nelson City, New Zealand Volcano Discovery 09:00 6-Jul-23. We know from Christchurch that they perform particularly badly in a large earthquake. Among buildings of this type, churches are particularly vulnerable to earthquakes because they are tall structures with large spaces and few or no internal walls. More than 20,000 people reported feeling a shake in the areas nearby, including Hamilton, Tauranga, Auckland, and Rotorua. The 5.1 magnitude quake hit at a depth of 7km about 5km south of Te Aroha in the Waikato region at 5.39am. They are found in main streets all over the country and are generally the oldest in any community, the most valuable to the community and the most dangerous in an earthquake. The northern part of New Zealand has been shaken by a strong earthquake this morning. One of the main causes of death and injury in the Christchurch earthquakes was unreinforced masonry buildings. The total cost of the rebuild has been put at over $40 billion and it is estimated that it will take the economy 50 to 100 years to recover completely. Almost all the city’s internationally recognised heritage buildings were lost. Some 1,240 buildings in the central city, from old to just-built, have had to be demolished. ![]() ![]() A maximum of 100 earthquakes are displayed. 185 people from 20 countries were killed. Earthquakes from the last 365 days that may have caused shaking intensity of Weak or greater in Aotearoa New Zealand. The February 2011 Christchurch earthquake was New Zealand’s second deadliest natural disaster, surpassed only by the 1931 earthquake in Hawke’s Bay.
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