For many years the Heathcote-Avon estuary was the dumping ground for Christchurch's sewage. Then, in 2010, the wastewater was diverted well out to sea, via a long pipe. David Schiel from the University of Canterbury and John Zeldis from NIWA were investigating the effects of this diversion on the health of estuary when the 2011 Christchurch earthquakes happened, re-engineering both the estuary and their experiments.
A photograph of cars on the McCormacks Bay causeway.
A photograph of road works on Augusta Street in Redcliffs.
A photograph of road cones on McCormacks Bay Road.
A photograph of cars on the McCormacks Bay causeway.
A photograph of a cyclist and car on the McCormacks Bay causeway.
Sand volcanoes" in the Heathcote Estuary. The volcanoes were caused by liquefaction, where the soil lost its strength and water erupted out of the hole, taking silt with it.
Sand volcanoes" in the Heathcote Estuary. The volcanoes were caused by liquefaction, where the soil lost its strength and water erupted out of the hole, taking silt with it.
Sand volcanoes" in the Heathcote Estuary. The volcanoes were caused by liquefaction, where the soil lost its strength and water erupted out of the hole, taking silt with it.
Sand volcanoes" in the Heathcote Estuary. The volcanoes were caused by liquefaction, where the soil lost its strength and water erupted out of the hole, taking silt with it.
A "sand volcano" in the Heathcote Estuary. The volcano was caused by liquefaction, where the soil lost its strength and water erupted out of the hole, taking silt with it.
Sand volcanoes" in the Heathcote Estuary. The volcanoes were caused by liquefaction, where the soil lost its strength and water erupted out of the hole, taking silt with it.
A photograph of liquefaction in the Avon Heathcote Estuary.
A photograph of liquefaction in the Avon Heathcote Estuary.
A photograph of liquefaction in the Avon Heathcote Estuary.
A photograph of liquefaction in the Avon Heathcote Estuary.
A photograph of liquefaction in the Avon Heathcote Estuary.
A photograph of liquefaction in the Avon Heathcote Estuary.
A photograph of liquefaction in the Avon Heathcote Estuary.
A photograph of liquefaction in the Avon Heathcote Estuary.
A photograph of liquefaction in the Avon Heathcote Estuary.
A photograph of liquefaction in the Avon Heathcote Estuary.
A photograph of liquefaction in the Avon Heathcote Estuary.
A photograph of liquefaction in the Avon Heathcote Estuary.
A photograph of liquefaction in the Avon Heathcote Estuary.
A photograph of liquefaction in the Avon Heathcote Estuary.
A photograph of liquefaction in the Avon Heathcote Estuary.
A photograph of liquefaction in the Avon Heathcote Estuary.
A photograph of liquefaction in the Avon Heathcote Estuary.
A photograph of liquefaction in the Avon Heathcote Estuary.