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How much more powerful is an earthquake of magnitude 7 than a Richter scale 5?
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How much more powerful is an earthquake of magnitude 7 than a Richter scale 5?
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trigger
First timers
8
How much more powerful is an earthquake of magnitude 7 than a Richter scale 5?
«
on:
24/11/2008 11:59:16 »
Hi all, can anyone please tell me: How many times greater is the maximum ground motion of a magnitude 7 earthquake compared with that of a magnitude 5 earthquake?
Many thanks trigger.
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Last Edit: 01/01/2009 04:18:41 by chris
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dentstudent
Neilep Level Member
3146
FOGger to the unsuspecting
Re: How much more powerful is an earthquake of magnitude 7 than a Richter scale 5?
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Reply #1 on:
24/11/2008 12:02:10 »
I think I'm right in saying that it's a log scale, and so a 6 is 10 times stronger than a 5, and a 7 is 10 times stronger than a 6; therefore a 7 is 100 times stronger than a 5.
As ever, Wiki has some good stuff....
http://en.wikipedia.org/wiki/Richter_magnitude_scale
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Last Edit: 24/11/2008 12:03:41 by dentstudent
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RD
Neilep Level Member
8171
Re: How much more powerful is an earthquake of magnitude 7 than a Richter scale 5?
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Reply #2 on:
24/11/2008 12:05:57 »
The Richter scale is a logarithmic scale (base 10),
so the amplitude of the motion of a 7 is 100 times the amplitude of a 5 (7-5=2, 10
^{2}
= 100).
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trigger
First timers
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Re: How much more powerful is an earthquake of magnitude 7 than a Richter scale 5?
«
Reply #3 on:
24/11/2008 12:07:31 »
Thank you so much for your help. I hope i can pick your brains again in the future
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