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Probabilistic prediction of rupture length, slip and
Probabilistic prediction of rupture length, slip and

... relationship between seismic slip and rupture length. We find that the larger the present slip amplitude Dp , the higher is the probability for the continuation of a rupture and the evolution into a ‘Big One’, that is, a long remaining rupture length Lr (Yamada 2007). We also find that the Dp –Lr re ...
Landslides, earthquakes, and erosion
Landslides, earthquakes, and erosion

determination of fault plane orientations from rupture directivity of
determination of fault plane orientations from rupture directivity of

... Earth. Since their discovery, the cause of intermediate and deep-focus earthquakes has remained a fundamental problem in seismology. While several physical mechanisms have been theorized to explain the occurrence of deep earthquakes, the mechanism may be constrained by determining the fault plane or ...
Radon as an Earthquake Precursor – Methods
Radon as an Earthquake Precursor – Methods

... promotes intense degassing fluxes, which causes higher soil gas radon concentrations on the ground surface above active fault zones. Although several measurements, experiments and models have been performed, the understanding of the mechanism of radon anomalies and their connection to earthquakes is ...
Operational Earthquake Forecasting
Operational Earthquake Forecasting

... earthquake damage, because they guide earthquake safety provisions of building codes, performance-based seismic design, and other risk-reducing engineering practices, such as retrofitting to correct design flaws in older buildings. Short-term forecasting of aftershocks is practiced by several countr ...
Subducted seafloor relief stops rupture in South American great
Subducted seafloor relief stops rupture in South American great

... segmentation, the statistical significance of these observations had hitherto not been ...
Balance of seismic moment in the Songpan
Balance of seismic moment in the Songpan

Canterbury Earthquakes – Impact on the Ministry
Canterbury Earthquakes – Impact on the Ministry

A BENEFIT/COST ANALYSIS FOR THE SEISMIC REHABILITATION
A BENEFIT/COST ANALYSIS FOR THE SEISMIC REHABILITATION

... losses throughout history. Although much improvement in earthquake resistant design has been achieved, people still suffer from the consequences of such a disaster even in the developed countries. The 1994 Northridge and 1995 Kobe earthquakes clearly proved that mother nature is still superior to ma ...
Chapter 5: EARTHQUAKE RISK
Chapter 5: EARTHQUAKE RISK

... experienced significant seismic activity during the settled history of Western Australia (WA). In this chapter the earthquake risk posed to the Perth metropolitan area is quantified by considering the seismic context of the city that contributes to its hazard and the vulnerability of its building st ...
102_2012_Wang_et_al_.. - Description
102_2012_Wang_et_al_.. - Description

... crustal deformation, and has been repeatedly struck by catastrophic earthquakes. The Chi-Chi earthquake in 1999 was the recent catastrophic event that caused thousands of casualties and countless loss in economy. Local researchers have spent lots of efforts on a variety of earthquake-related studies ...
Central US earthquake catalog for hazard maps of Memphis
Central US earthquake catalog for hazard maps of Memphis

KeyGraph as Risk Explorer in Earthquake-Sequence
KeyGraph as Risk Explorer in Earthquake-Sequence

... detecting hidden causalities among land crust movements and activities of faults. Hereafter, we call our system Fatal Fault Finder or F3 in short. F3 finds risky faults by applying KeyGraph, which was originally presented as a document-indexing algorithm (Ohsawa, 1998), not to a document but to a se ...
Mapping spatial variability of the frequency
Mapping spatial variability of the frequency

... Often, catalogs are reasonably homogeneous, starting when the network was improved to its modern state. This allows us to use the data without modification from ts on. In cases where simple magnitude shifts are detected, without changes in average b-value, one may be able to introduce corrections o ...
P from the 2011 Tohoku-Oki earthquake Masatoshi Miyazawa
P from the 2011 Tohoku-Oki earthquake Masatoshi Miyazawa

Recipe for Predicting Strong Ground Motion from Crustal
Recipe for Predicting Strong Ground Motion from Crustal

... coincide with the asperity areas. Based on the scaling relationships, the deductive source model for the prediction of strong ground motions is characterized by three kinds of parameters: outer, inner, and extra fault parameters. The outer fault parameters are defined as entire rupture area and tota ...
Anomalous soil radon fluctuations – signal of earthquakes in Nepal
Anomalous soil radon fluctuations – signal of earthquakes in Nepal

Repeating earthquakes in the Yellowstone volcanic field
Repeating earthquakes in the Yellowstone volcanic field

Are earthquakes predictable? - San Andreas UCLA Seismic
Are earthquakes predictable? - San Andreas UCLA Seismic

... however, two physical scales may be suggested: one connected to the propagation of elastic waves and earthquake rupture, and the other related to the velocity of tectonic deformation. The size of the earthquake focal area or of the zone of intense shaking suggests that the first scale is of the orde ...
The Performance of Earthquake Strengthened URM Buildings in the
The Performance of Earthquake Strengthened URM Buildings in the

... The Performance of Earthquake Strengthened URM Buildings in the Christchurch CBD in the 22 February 2011 Earthquake Expertise associated with the seismic response of unreinforced masonry buildings was developed at the University of Adelaide, in part, through research funded by the Australian Researc ...
report
report

Earthquake Disaster Guidelines - National Disaster Management
Earthquake Disaster Guidelines - National Disaster Management

... vision of moving towards a more proactive pre-disaster preparedness and mitigation-centric approach. These contain all the details that are required by the planners and implementers and will help in the preparation of plans by the central ministries and the states. A national level Earthquake Mitiga ...
Research on the Seismic Activity of the Lower Yangtze River
Research on the Seismic Activity of the Lower Yangtze River

... initially outlines the potential danger zone. ...
natural disasters: earthquakes
natural disasters: earthquakes

... Interpret a range of sources of geographical information, including maps, diagrams, globes, aerial photographs and Geographical Information Systems (GIS) Human and Physical Geography Understand, through the use of detailed place-based exemplars at a variety of scales, the key processes in physical g ...
SOFT-STOREY BEHAVIOUR IN AN EARTHQUAKE and
SOFT-STOREY BEHAVIOUR IN AN EARTHQUAKE and

1 2 3 4 5 ... 16 >

2011 Christchurch earthquake



The February 2011 Christchurch earthquake occurred on 22 February at 12:51pm local time (23:51 21 February UTC) and registered 6.3 on the Richter scale. The earthquake struck the Canterbury Region in New Zealand's South Island and was centred 2 kilometres (1.2 mi) west of the port town of Lyttelton, and 10 kilometres (6 mi) south-east of the centre of Christchurch, at the time New Zealand's second-most populous city. The earthquake caused widespread damage across Christchurch, killing 185 people in the nation's second deadliest natural disaster.Christchurch's central city and eastern suburbs were badly affected, with damage to buildings and infrastructure already weakened by the magnitude 7.1 Canterbury earthquake of 4 September 2010 and its aftershocks. Significant liquefaction affected the eastern suburbs, producing around 400,000 tonnes of silt. The earthquake was felt across the South Island and parts of the lower and central North Island. While the initial quake only lasted for approximately 10 seconds, the damage was severe because of the location and shallowness of the earthquake's epicentre in relation to Christchurch and previous quake damage. Subsequent population loss saw the Christchurch main urban area fall behind the Wellington equivalent to decrease from second to third most populous area in New Zealand.
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