Seismologists have long used layperson reports of shaking to study earthquakes, particularly for historic earthquakes that lack high-quality seismographic measurements. The concept today is the same, but technology has greatly increased the quality and availability of that information. Besides Twitter activity, Allen lists a few more examples. The European-Mediterranean Seismological Center uses hits on its website, resolved geographically by IP address, to learn about the areas affected by earthquakes.
January 22, 2012
tweetology . . .
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