Seismology of the Two Events–K. Berryman

Presentation on the seismology of the two Christchurch earthquakes (September and February) prepared by Kelvin Berryman of GNS Science. CLICK HERE TO VIEW: PRESENTATION (5.3 MB)

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Fault Map from GNS Science

Below is fault map, courtesy of GNS Science, showing earthquakes, aftershocks and the fault associated with September and February events. Click to enlarge.  

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The Darfield Earthquake & Christchurch Aftershock Educational Slides from the USGS

To view educational slides created and compiled by Gavin Hayes of the USGS titled, “The 09/03/2010 Darfield Earthquake and its Aftershocks, Including the 02/21/2011 Christchurch Event” click here.

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Christchurch Satellite Imagery

Satellite imagery of Christchurch two days after the M6.3 earthquake hit are available for Google Earth.  To use this imagery, you’ll need to install Google Earth (http://www.google.com/earth/download/ge/).  After you have it installed, open the following files: Central and Northern Christchurch Southern...

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USGS Shakemaps

The following is a comparison of the spatial distribution of peak ground accelerations for the Christchurch and Darfield earthquakes, using data from USGS Shakemaps. The ratio plot (bottom right of page 1) shows that PGA’s for the Christchurch earthquake were as much as 5-times greater in the...

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Darfield Space Time Plot

The following is a space-time plot for the Darfield sequence compiled from the GNS catalog for August 1, 2010 through February 23, 2011. Note: The symbols show epicentral locations scaled to magnitude.  Red symbols indicate events with magnitudes greater than 5. Darfield EQ Sequence (download PDF file)    

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Maps available from USGS

Various maps available at USGS site: location, PAGER, hazard, Did you feel it, seismicity: Click HERE

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Aftershock Map

Source: Gavin Hayes, NEIC from GNS data. Download it here – Aftershock Map (PDF)

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