PSN-L Email List Message

Subject: Re: Article On Microseisms
From: ChrisAtUpw@.......
Date: Fri, 11 Apr 2008 09:46:11 EDT


In a message dated 2008/04/11, gmvoeth@........... writes:

> I have noticed a significant increase in the magnitude of such Microseisms
> just hours preceeding a major weather front here in Arizona.
> I used to think it might relate to winds hitting the mountains but according 
> to this it must be wave interaction in the Pacific Ocean.

Hi Geoff,

       Those were probably due to pressure noise on the weather front. They 
can be quite noisy.

       Note that there are several places in the ocean which generate 
microseisms. The news article referreed to only one. The shelving bottom to the west 
of Norway is another and there are others in the Pacific.

       Regards,

       Chris Chapman   
In a me=
ssage dated 2008/04/11, gmvoeth@........... writes:

I have noticed a significant in= crease in the magnitude of such Microseisms
just hours preceeding a major weather front here in Arizona.
I used to think it might relate to winds hitting the mountains but according= to this it must be wave interaction in the Pacific Ocean.


Hi Geoff,

       Those were probably due to pressure noi= se on the weather front. They can be quite noisy.

       Note that there are several places in t= he ocean which generate microseisms. The news article referreed to only one.= The shelving bottom to the west of Norway is another and there are others i= n the Pacific.

       Regards,

       Chris Chapman

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