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Pacific Plate and Indian-Australian Plate
- The two tectonic plates involved in this destructive 6.3 magnitude earthquake were the Pacific Plate and Indian-Australian Plate. The two plates were on a transform plate boundary, which means the plates rubbed against each other to make friction which causes resistance.
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Christchurch earthquakes of 2010–11, series of tremors that occurred within and near the city of Christchurch, New Zealand, and the Canterbury Plains region from early September 2010 to late December 2011. Learn more about these events, including the resulting damage and death toll.
Aug 10, 2023 · The two tectonic plates involved in this destructive 6.3 magnitude earthquake were the Pacific Plate and Indian-Australian Plate. The two plates were on a transform plate boundary, which means the plates rubbed against each other to make friction which causes resistance.
The acceleration experienced in February 2011 would "totally flatten" most world cities, causing massive loss of life; in Christchurch, New Zealand's stringent building codes limited the disaster.
- 1 Local Geology and Ground Conditions
- 2 Liquefaction Characteristics in The 2010–2011 Earthquakes
- 3 Impacts of Liquefaction on Buildings and Infrastructure
Christchurch is located on deep alluvial soils of the Canterbury Plains, except for its southern edge, which is located on the slopes of the Port Hills of Banks Peninsula. The plains are built of complex inter-layered soils deposited by eastward-flowing rivers from the Southern Alps into the Pacific Ocean. The plains cover an area approximately 50 ...
The 2010–2011 earthquakes caused repeated liquefaction through the suburbs of Christchurch and its Central Business District. The liquefaction was very severe and widespread (covering nearly one third of the city area) causing extensive damage to residential houses/properties, commercial buildings, lifelines and infrastructure. Figure 1.9 indicates...
1.3.3.1 Residential Buildings
Christchurch has a population of about 350,000 (the second largest city in New Zealand) and an urban area that covers approximately 450 km2. It is sparsely developed with approximately 150,000 dwellings, predominantly single-storey houses with a smaller number of two-storey houses spread evenly throughout the city. Typical residential houses in Christchurch are light timber-frame structure with weatherboard (older buildings), unreinforced brick veneer and stucco used as exterior cladding. Fou...
1.3.3.2 CBD Buildings
The shallow alluvial soils vary substantially within short distances, both horizontally and vertically within the CBD. Relatively clean and deep sands dominate the stretch along the Avon River, which was the area most severely affected by liquefaction in the 22 February 2011 earthquake. In this zone, many mid-rise and high-rise commercial buildings on shallow foundations and deep foundations were affected by liquefaction in different ways (Cubrinovski et al. 2011a). Several smaller buildings...
1.3.3.3 Spreading-Induced Damage to Bridges
Starting from the Colombo St Bridge located within the CBD, practically all bridges downstream Avon River were severely impacted by lateral spreading. Rotational movements of abutments, damage to foundation piles, subsidence of approaches to bridges and in some cases structural damage were the most typical spreading-induced damage to bridges. The images of the South Brighton Bridge shown in Fig. 1.16 will be used to illustrate the typical deformation mechanism. As described earlier, the sprea...
- Misko Cubrinovski, Stefano Pampanin, Brendon Bradley
- 2013
Sep 1, 2022 · The tectonic plate boundary New Zealand is situated in is between the Pacific and Australian plates. The fault that forms the boundary of the Pacific and Australian plates is called the Alpine Fault. The length of the Alpine fault is 480km, it is located across the spine of the South Island.
of the Christchurch Earthquakes 1.2.1 Tectonic Summary As depicted in Fig. 1.1, New Zealand resides on the boundary of the Pacific and Australian plates, and its active tectonics are dominated by: (i) oblique subduction of the Pacific plate beneath the Australian plate along the Hikurangi trough in the
Alpine Fault- the tectonic plate boundaries on New Zealand. Greendale Fault (shown in pink & red)- this was the fault that ruptured on September 4th 2010, resulting in a 7.2 magnitude earthquake. Canterbury's Soil & Liquefaction:
