Extra earthquake monitoring stations installed in Canterbury last week will dramatically improve the quality of information about the region's seismic shifts, a GeoNet scientist says.
GeoNet staff have set up six new stations for weak motion earthquakes in sites around the region, including Arundel and Timaru.
Seismologist Lara Bland says the sites are being installed in order to improve the quality of data about earthquakes in the region.
She said the plotting of accurate earthquake on maps and three-dimensionally begins to build a picture of fault structures.
"Where those zones of weakness are become very important when you're calculating risk or future rebuilding."
Ms Bland says the stations are not predictors but will help to model seismic activity.