PSN-L Email List Message
Subject: Re: Shadow Zones
From: Angel sismos@..............
Date: Tue, 26 Dec 2006 12:18:58 +0000
Merry Christmas to all.
Jerry, maybe this poster will help a bit.
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.
> Chris Chapman
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