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RE: China EQ

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Sorry, I meant 20 seconds.
[Some reason my correction post posted some hours ago did not appear on the
list] 

-Suresh


-----Original Message-----
From: Ralph Kratz [mailto:rhkratzse(--nospam--at)aol.com] 
Sent: Tuesday, June 10, 2008 1:59 PM
To: <seaint(--nospam--at)seaint.org>
Cc: seaint(--nospam--at)seaint.org
Subject: Re: China EQ

Hmmm, Suresh, I was on the roof of my house in Richmond & Loma Prieta seemed
to last all of about 30 seconds, altho I recognize that imperceptable
shaking may have lasted much longer.  I thought the length is typically
given as about 5 minutes.

Ralph

Sent from my iPhone

On Jun 10, 2008, at 11:42 AM, Drew Morris <dmorris(--nospam--at)bbfm.com> wrote:

> Acharya, Suresh wrote:
>> Worth adding: Sichuan earthquake lasted several minutes compared to  
>> Loma Prieta earthquake which lasted for 20 minutes. Both occurred  
>> at similar depths (18 km).
>> Suresh Acharya, S.E.
> The USGS gave the duration of the Loma Preita EQ as being on the  
> order of 20 seconds.  Does the 20 minutes you quote include  
> aftershocks?
>
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