GeoNet web traffic plotted against aftershocks

By Chris McDowall 13/09/2010 3


GeoNet have created a line chart to show the volume of web traffic they received in the days following the 2010 Christchurch earthquake.

There are three main things to keep in mind when you read the graph:

  • The green line shows the number of hits their website was receiving per second (in one minute averages).
  • The orange diamond represent the timing of significant aftershocks.
  • The number above the orange diamond records the magnitude of the seismic event.

GeoNet web statistics

It is apparent that spikes in web traffic were correlated with the incidence of seismic events. Also note that the greatest traffic volumes occur during the day on Monday, Tuesday and Wednesday. It would be interesting to know the reason for this. Possible factors include growing public awareness of the GeoNet website and that people are more likely to have access to a computer during the working week.

Whatever the case, it is clear the GeoNet website weathered a massive increase in traffic last week. (On Wednesday, September 8, they received 64 million hits!) The service stayed online when we needed it most. A big thanks to everyone working on GeoNet for building and maintaining a solid website that can withstand a major emergency.

The full version of the chart is available on the GeoNet website. (via @AlastairJNZ)



3 Responses to “GeoNet web traffic plotted against aftershocks”

  • Thanks GeoNet! Perhaps some further interesting patterns will appear if the location of the requests is mapped?

  • I think the lack of internet traffic after the events on Saturday and Sunday could be because a lot of homes in the effected areas were without power for part of those days.