Facts & Statistics

Description Magnitude Frequency per year
Great

8.0+

1

Major

7.0-7.9

18

Large (destructive)

6.0-6.9

120

Moderate (damaging)

5.0-5.9

1,000

Minor (damage slight)

4.0-4.9

6,000

Generally felt

3.0-3.9

49,000

Potentially perceptible

2.0-2.9

300,000

Imperceptible

Less than 2.0

600,000+

[From Earthquakes and the Urban Environment, Vol. 1, G. Lennis Berlin, 1980
Found/”borrowed” from http://www.ceri.memphis.edu/awareness/follies.html%5D

[Illustration courtesy IRIS Consortium]
[“Borrowed” from http://geology.about.com/library/bl/blquakestats.htm%5D

  • Most earthquakes last under sixty seconds.
  • The shaking ground is not what kills most people in an earthquake, but rather the fires it causes, the building that it collapses and the natural disasters it creates (tsunamis, avalanches, landslides, etc.)
  • Every thirty seconds an earthquake occurs somewhere in the world.
  • Sometimes a weaker earthquake can cause more death and destruction than a strong one.  The occurs when the weaker earthquake’s epicenter is in the middle of a highly populated city.




Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

 
%d bloggers like this: