PSN-L Email List Message

Subject: Re[2]: Shadow Zones
From: Angel sismos@..............
Date: Tue, 26 Dec 2006 12:18:58 +0000


Hello Chris,

Merry Christmas to all.

Jerry, maybe this poster will help a bit.

http://www.iris.edu/gifs/ExplorEarthPoster.jpg

regards,

Angnel

Tuesday, December 26, 2006, 11:57:56 AM, you wrote:

>  
> From: gpayton880@.......
>  Subject: Shadow Zones
>  
>   

>     
>   If given my exact location on the earth (lat/Long), is there a
> software program to show WHERE my "shadow zone" is located?   What area(s) would be excluded?
>    
>   I understand Lat. / Long., but the degrees described with a
> shadow zone is a little confusing to me.
>    
>   Hi Jerry,
>    
>        Can you get yourself a globe? Then take a strip of
> cardboard, measure the correct anglar length at the equator, put one
> end on your home location and use the other to scribe the circular
> zones with a crayon or similar. You are probably only interested in
> locations where the circles cross active quake zones.
>    
>   Regards,
>    
>   Chris Chapman
>     


-- 
Best regards,
 Angel

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