[therion] Re: preliminary text

Martin Sluka martinsluka at mac.com
Mon Feb 28 17:55:31 CET 2005


At 16:29 +0100 28.2.2005, Stacho Mudrak wrote:
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>> So it is calcalated automatically? Could I, say to have a survey with
>> year 2000 declination value and centerlines in it will be adjusted to
>> respective dates?
>
>
> Yes. You can specify declination for 1990 and 2000 (e.g. -declination [1990 2.0 2000 3.0 deg]), and all centerlines between will be adjusted (e.g. in 1995, declination 2.5deg will be used).


You may generate the declination for one datum or for time interval on page:

http://www.ngdc.noaa.gov/seg/geomag/jsp/struts/calcDeclination/

and copy/paste it to your .th file.

MS.
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