Category Archives: Investigations

Count of Earthquakes M6+ -v- Count of Seismic Stations

There are many tales on the Internet of how earthquakes have been increasing and we are all doomed! Alternatively if not doomed the planet is going into some sort of transition with an increase in frequencies of the inhabitants and … Continue reading

Posted in Investigations, Magnitude 6, Magnitude 7, Magnitude 8, Magnitude 9 | Tagged , , , , , | 1 Comment

Earthquake Northern Norway deleted!

OMG! USGS and EMSC are deleting earthquakes! Well that is the reaction that some will give, but no this is a perfect example of how the computerised systems can make a mistake which is then sorted out by a human … Continue reading

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False earthquake reports from IRD New Caledonia?

The relatively new IRD New Caledonia seismic reporting system which is quite a nice site in terms of product unfortunately seems to have a slight problem with accuracy. A blogger friend has also been looking at this and it seems … Continue reading

Posted in 11 - New Zealand Region, 14 - Vanuatu Islands, 187 - New Caledonia, Deleted Earthquakes, Investigations | Tagged , | Leave a comment

The pattern of Magnitude 6+ earthquakes so far in 2011

This is not going to be an in depth review, it is just that I was playing around with procedures on the database I maintain and created on to give a daily count of earthquakes in a date range for … Continue reading

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Colorado Mag 5.3 – An unusual earthquake?

Continental USA does have earthquakes but generally they are ‘insignificant’ and small. The earthquake today in Colorado is perhaps unusual. Earthquake Details (This link will not work after 7 days) Up until 2001 seismicity in Colorado within 60 Km of … Continue reading

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Comparing 3 earthquakes

It has always fascinated me the difference between the signatures of earthquakes of similar sizes as seen from different parts of the world. On the 22nd August there were 3 Mag 5 quakes (amongst others) Date/Time UTC,Latitude,Longitude,Magnitude,Depth(Km),Location2011-08-22 06:04:57, -17.470, 167.244, … Continue reading

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Using seismograph sounds to identify events

I play about with creating sound files from earthquake waveform files. I do it quite a lot actually and I have got used to being able to identify events from the sounds rather than the image of the seismogram. Now … Continue reading

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