Hi Chris -

As you said, microseisms are generated world wide when ocean waves strike
shore.  The strength of the microseisms are largely dependent upon the size
of the waves that come ashore.

The US Navy Fleet Numerical Meteorology and Oceanography Center -
https://www.fnmoc.navy.mil/public/

publishes charts with current and projected ocean wave height worldwide and
regional.  This web site is a good place to start with when you see
microseisms.  You can often see the microseisms from large oceanic storms at
long distances.  East Coast USA hurricanes are very visible on West Coast
USA seismic stations, and are probably also visible in Europe.

Cheers,

Bob Hancock

On 4/11/08 6:46 AM, "ChrisAtUpw@......."  wrote:

> 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







Hi Ch=
ris -



As you said, microseisms are generated world wide when ocean waves strike s=
hore.  The strength of the microseisms are largely dependent upon the s=
ize of the waves that come ashore.



The US Navy Fleet Numerical Meteorology and Oceanography Center -  htt=
ps://www.fnmoc.navy.mil/public/



publishes charts with current and projected ocean wave height worldwide and=
 regional.  This web site is a good place to start with when you see mi=
croseisms.  You can often see the microseisms from large oceanic storms=
 at long distances.  East Coast USA hurricanes are very visible on West=
 Coast USA seismic stations, and are probably also visible in Europe.



Cheers,



Bob Hancock



On 4/11/08 6:46 AM, "ChrisAtUpw@......." <ChrisAtUpw@.......&g=
t; wrote:



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



I have noticed a significant increase in the magnitude of such Microseisms<=
BR>
just hours preceeding a major weather front here in Arizona.

I used to think it might relate to winds hitting the mountains but accordin=
g to this it must be wave interaction in the Pacific Ocean.





Hi Geoff,



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



       Note that there are several place=
s in the ocean which generate microseisms. The news article referreed to onl=
y one. The shelving bottom to the west of Norway is another and there are ot=
hers in the Pacific.



       Regards,



       Chris Chapman