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Website of scientist Dr N.E. Whitehead. Includes tabulated raw data from an online survey, a report based on the data, a link to the scientific paper written by Dr Whitehead and Professor Motoji Ikeya.
Experts trying to restore Christchurch's busted sewerage system have faced up to concerned residents about what happened when raw sewage was allowed to flow directly into the sea in the months after the February earthquake.
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This one was really flowing out of the ground.
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These were scattered across the park.
Robbie watches a sand volcano smother his driveway.
Cracks in the roads and foot paths were surprisingly hard to find given the strength of the earthquake.
Sand volcanoes put the silt all over the road.
The earthquake knocked over the bird bath.
Debra points at the beginnings of a sand volcano not long after the big earthquake.
An usual thing to see coming from the ground in Hoon Hay, Christchurch.
Laura, Nicola, and Debra watch a sand volcano build in the Wyn Street gutter.
(I righted the bird bath after the initial earthquake. None of the after-shocks were sufficient to knock it over again.)
One of the many sand volcanos erupting from the ground after the Christchurch earthquake.
Cleaning up the silt and sand from Hoon Hay properties. Here Laura, Robbie, and Ronny are part of the clean-up crew on Wyn Street.
And, yes, the newspaper always gets through! The Press newspapers were delivered in our area of Hoon Hay in the hours after the earthquake.
The Ōtakaro-Avon and Ōpāwaho-Heathcote in Christchurch are some of the most polluted in the region. While the Avon has received a lot of attention since the Canterbury Earthquakes with $100 million going into a new promenade and cleaning up its water quality, it's a different story for the Heathcote River where raw sewage and industrial chemicals are still regularly found. Niva Chittock reports.
Telegraph Road was a straight road before the recent 7.1 magnitude earthquake. The fault ran right through here and now the road has a dramatic kink in it.
For six weeks after the February 2011 Christchurch earthquake millions of litres of raw sewage - along with lots of liquefaction - poured into the Avon and Heathcote Rivers. A team of biologists quickly got to work to measure the impact of this catastrophe on life in the Heathcote River and as they tell Alison Ballance, they were surprised by what they recorded over the next few months.
This has made a huge mess for the residents to clean up. I heard on the news that homes have been damaged by subsidence in areas of earthquake-caused liquefaction like this.
Lots of people were out and about in the streets checking on everyone after the earthquake. When it was clear that everyone was OK, the sand volcanos became the feature of interest.