Those of us with friends and relatives in Australia, New Zealand and in other countries on the Pacific rim are well aware that earthquakes regularly hit the region. Many of them are minor but recently there have been more serious events, most of which are not picked up by the UK or European press. A Google News alert will pick up those that make the headlines in the regional press that are local to the quake, but aftershocks are not always reported. Search engine Ask has a map showing recent earthquakes and their magnitude on a map at http://www.ask.com/earthquake but there is no email or RSS alert option so you have to keep going back to the site to see the latest news. The US Geological Survey has detailed information and alerts on earthquakes at http://earthquake.usgs.gov/eqcenter/. In addition there are two RSS feeds: one is for earthquakes with a magnitude greater than 2.5 (http://earthquake.usgs.gov/eqcenter/catalogs/eqs1day-M2.5.xml) and the second for those with a magnitude greater than 5.0 (http://earthquake.usgs.gov/eqcenter/catalogs/eqs7day-M5.xml).

If you are a Firefox user there is an eQuake add-on at https://addons.mozilla.org/en-US/firefox/addon/2239 which uses the USGS data. It alerts you with the basic information (date, location, and magnitude) of each earthquake but you can specify a lower limit for the magnitude, for example 4. By default your browser will ‘shake’ proportional to the earthquake magnitude but you can configure the alert methods. I have only just installed it so I’m not sure how disruptive the quaking browser effect is going to be …… and as I write this an earthquake of 4.9 has just hit the Santa Cruz Islands region! And having just spell checked this article a 6.8 quake has occurred off the west coast of the South Island of New Zealand. If nothing else this is an interesting way to demonstrate the frequency of earthquakes.