In a message dated 2006/11/01, jonfr500@......... writes:

> Is there any good how to on how I can calculate mag correction for winsdr
> and winquake?

Hi Jon,

       You at least need the amplitudes of the P or S waves. Sorry, but your 
4.5 Hz geophones are unlikely to give you a good estimate of this.

       Regards,

       Chris Chapman
In a me=
ssage dated 2006/11/01, jonfr500@......... writes:



Is there any good how to on how=
 I can calculate mag correction for winsdr

and winquake?




Hi Jon,



       You at least need the amplitudes of the=
 P or S waves. Sorry, but your 4.5 Hz geophones are unlikely to give you a g=
ood estimate of this.



       Regards,



       Chris Chapman