[Therion] World Magnetic Model

[Martin Budaj]

Hi,

Therion does not use WMM at all (as it doesn't contain 20th century
historical data).
It uses IGRF model (https://www.ngdc.noaa.gov/IAGA/vmod/igrf.html) which
hasn't been updated yet.

Best regards
Martin

On Thu, Apr 11, 2019 at 5:05 PM kevin dixon via Therion <therion at speleo.sk>
wrote:

> The last Therion release 5.4.3 is dated 01 Feb 2019.
>
> There has in recent years been a significant change of the Magnetic North
> Pole location, less so for the Geomagnetic South Pole:
> https://ngdc.noaa.gov/geomag/GeomagneticPoles.shtml
>
> Given the above, an out of cycle World Geomagnetic Model WMM2015v2 was
> released 04 Feb 2019.
>
> When will this update appear in Survex and Therion ?
>
> Thanks,
>
> Kevin Dixon
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