At 4.35 a.m. on 4 September 2010, the Canterbury region was struck by a magnitude 7.1 earthquake. It shook Cantabrians, their properties, their land and their lives.
The earthquake which struck at 4.35 a.m. on a Saturday morning was felt by many people in the South Island and southern North Island. There was considerable damage in central Canterbury, especially in Christchurch, but no loss of life.
A reconnaissance report on the 4 September 2010 earthquake. The report was compiled by a team from the US National Science Foundation-sponsored Geotechnical Extreme Events Reconnaissance (GEER) Association.
PDF slides from a presentation given by Dr. Thomas Wilson from the UC Geology department on 29 November 2010. The presentation was delivered at two public lectures, one at Lincoln University and another in Darfield.
A report by Thomas Wilson, Zach Whitman, Matt Cockcroft, Mike Finnemore, Peter Almond, Derrick Moot, et al on various remediation techniques for farms on the Greendale fault scarp. The purpose of the report was to brief the Rural Recovery Group on 20 September 2010.
The previously unknown Greendale Fault ruptured to the ground surface, causing up to 5 metres horizontal and 1 metre vertical permanent offset of the ground, during the September 2010 Darfield (Canterbury) earthquake. Environment Canterbury commissioned GNS Science, with help from the University of Canterbury, to define a fault avoidance zone and to estimate the fault recurrence interval. There is little evidence for past movement on the fault in the past 16,000 years. However, because of the uncertainties involved, a conservative approach was taken and the fault has been categorised as a Recurrence Interval Class IV fault (a recurrence interval of between 5,000 and 10,000 years). A PhD study by a University of Canterbury student will work towards refining the Recurrence Interval Class over the next three years. Taking a risk-based approach, the Ministry for the Environment Active Fault Guidelines recommend that normal residential development be allowed within the fault avoidance zone for faults of this Recurrence Interval Class, but recommends restrictions for larger community buildings or facilities with post-disaster functions. The report is assisting Selwyn District Council in granting consents for rebuilding houses on or near the Greendale Fault that were damaged by permanent distortion of the ground due to the fault rupture in the September 2010 earthquake. The report provides specific recommendations for building on or close to the Greendale Fault, which are being implemented by Selwyn District Council. See Object Overview for background and usage information.