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Analysis of liquefaction characteristics at Christchurch strong motion sta…
Research papers, University of Canterbury Library
The city of Christchurch and its surrounds experienced widespread damage due to soil liquefaction induced by seismic shaking during the Canterbury earthquake sequence that began in September 2010 with the Mw7.1 Darfield earthquake. Prior to the start of this sequence, the city had a large network of strong motion stations (SMSs) installed, which were able to record a vast database of strong ground motions. This paper uses this database of strong ground motion recordings, observations of liquefaction manifestation at the ground surface, and data from a recently completed extensive geotechnical site investigation program at each SMS to assess a range of liquefaction evaluation procedures at the four SMSs in the Christchurch Central Business District (CBD). In general, the characteristics of the accelerograms recorded at each SMS correlated well with the liquefaction evaluation procedures, with low liquefaction factors of safety predicted at sites with clear liquefaction identifiers in the ground motions. However, at sites that likely liquefied at depth (as indicated by evaluation procedures and/or inferred from the characteristics of the recorded surface accelerograms), the presence of a non-liquefiable crust layer at many of the SMS locations prevented the manifestation of any surface effects. Because of this, there was not a good correlation between surface manifestation and two surface manifestation indices, the Liquefaction Potential Index (LPI) and the Liquefaction Severity Number (LSN).
BeckerFraserPhotos February 2013 photograph 053
Images, UC QuakeStudies
Messages are written on stones and laid in a circle with flowers at the CTV building site on the anniversary of the 22 February 2011 earthquake.
BeckerFraserPhotos February 2013 photograph 054
Images, UC QuakeStudies
Messages are written on stones and laid in a circle with flowers at the CTV building site on the anniversary of the 22 February 2011 earthquake.
BeckerFraserPhotos February 2013 photograph 052
Images, UC QuakeStudies
Messages are written on stones and laid in a circle with flowers at the CTV building site on the anniversary of the 22 February 2011 earthquake.
We're under way!
Audio, Radio New Zealand
Professor Andrew Barrie discusses an exhibition that comes up with ways to keep Christchurch communities together after the loss of so many earthquake damaged parish churches.
Concerns highlighted about high costs of dumping quake rubble
Audio, Radio New Zealand
Record fines for two companies and a director who illegally dumped contaminated demolition material has highlighted problems with the costs of dumping earthquake rubble from Christchurch.
Third year could be the worst for quake-stressed Cantabrians
Audio, Radio New Zealand
Mental health experts in Christchurch are warning the worst could be still to come for people suffering from anxiety, depression and stress related to the earthquakes.
First census in seven years takes place today
Audio, Radio New Zealand
Today is census day; the first nationwide stocktake in seven years after the census was called off in 2011 because of the February earthquake in Christchurch.
Photograph by Jennifer Middendorf 391
Images, UC QuakeStudies
A sign on the side of one of the containers in Re:Start mall reads, "Re:Start, proudly supported by Christchurch Earthquake Appeal. Tomorrow starts here".
Photograph by Jennifer Middendorf 303
Images, UC QuakeStudies
People cast flowers into the Avon River during the River of Flowers event held in Riccarton Bush, commemorating the second anniversary of the 22 February earthquake.
Photograph by Jennifer Middendorf 301
Images, UC QuakeStudies
People cast flowers into the Avon River during the River of Flowers event held in Riccarton Bush, commemorating the second anniversary of the 22 February earthquake.
Photograph by Jennifer Middendorf 300
Images, UC QuakeStudies
People cast flowers into the Avon River during the River of Flowers event held in Riccarton Bush, commemorating the second anniversary of the 22 February earthquake.
Photograph by Jennifer Middendorf 302
Images, UC QuakeStudies
People cast flowers into the Avon River during the River of Flowers event held in Riccarton Bush, commemorating the second anniversary of the 22 February earthquake.
Chch set for radical re-drawing of boundaries
Audio, Radio New Zealand
Christchurch looks set for a radical re-drawing of boundaries in six of its seven electorates to take account of its shifting population since the earthquakes.
X Marks the Spot
Images, eqnz.chch.2010
What I found on a walk around the city Christchurch November 20, 2013 New Zealand. www.isaactheatreroyal.co.nz/ en.wikipedia.org/wiki/2011_Christchurch_earthquake
Jennifer Middendorf's Blog 09/10/2013: Random things
Articles, UC QuakeStudies
An entry from Jennifer Middendorf's blog for 9 October 2013 entitled, "Random things".
QuakeStory 653
Articles, UC QuakeStudies
A story submitted by Tayla Hodge to the QuakeStories website.
Ruth Gardner's Blog 23/10/2013: "Home" by Julie Myerson
Articles, UC QuakeStudies
An entry from Ruth Gardner's Blog for 23 October 2013 entitled, "'Home' by Julie Myerson".
Ruth Gardner's Blog 24/10/2013: Potential Park
Articles, UC QuakeStudies
An entry from Ruth Gardner's Blog for 24 October 2013 entitled, "Potential Park".
QuakeStory 629
Articles, UC QuakeStudies
A story submitted by Anonymous to the QuakeStories website.
Ruth Gardner's Blog 03/06/2013: Barbadoes Bedsits?
Articles, UC QuakeStudies
An entry from Ruth Gardner's blog for 3 June 2013 entitled, "Barbadoes Bedsits?".
Address by Roger Sutton
Videos, UC QuakeStudies
A public talk by Roger Sutton, CEO at the Canterbury Earthquake Recovery Authority. This talk formed part of the Plenary One session, 'Looking forward - updates and perspectives'.
Bob Parker's last day in office
Audio, Radio New Zealand
After six years leading Christchurch, three of them since the first Canterbury earthquake, Bob Parker is packing up his office and hanging up the Mayoral chains today.
Roz Johnson's Blog 23/02/2013: Flower Cones
Articles, UC QuakeStudies
An entry from Roz Johnson's blog for 23 February 2013 entitled, "Flower Cones".
Roz Johnson's Blog 09/06/2013: Outer Spaces
Articles, UC QuakeStudies
An entry from Roz Johnson's blog for 09 June 2013 entitled, "Outer Spaces".
Roz Johnson's Blog 03/03/2013: A Poignant Memorial
Articles, UC QuakeStudies
An entry from Roz Johnson's blog for 3 March 2013 entitled, "A Poignant Memorial".
One In Five for 31 March 2013
Audio, Radio New Zealand
One in Five is in Christchurch to meet elderly residents in some of the areas worst hit by the earthquakes. In these suburbs, a series of exercise classes is providing a lifeline for locals who are increasingly confined to their immediate areas. The classes, which are run by Therapy Professionals for Arthritis New Zealand, offer improved mobility to those living with the condition but also companionship and support in a stressful time. Those taking part talked to Katy Gosset about aging with a disability and coping with life after the earthquakes.
20130524_7207_1D3-75 Earthquake damage to a Hulverstone Drive house
Images, eqnz.chch.2010
Awaiting demolition
20131110_8305_EOS M-27 Empty and overgrown (Day 314/365)
Images, eqnz.chch.2010
A house, one of the few still remaining in the Dallington Red Zone (Avonside Drive, Dallington). The area is "red zoned" due to land damage from earthquakes (mainly the February 22nd 2011 6.4 magnitude quake).
Work Has Started
Images, eqnz.chch.2010
The earthquake re-pair work has started on the Knox Church on Bealey Avenue, August 14, 2013 Christchurch New Zealand. While building after building is torn down in Christchurch, plans are in place to ensure as much of a 131-year-old church is retained as possible. Knox Church on Bealey Avenue suffered major damage in the February 22 earthquak...