[webservices] distaz

[Chad Trabant]

Hi Paul,

This calculation includes an ellipticity correction and the latitudes are assumed to be geographic.

We are considering the idea of adding the calculated distance assuming geocentric coordinates to the service.  This would allow users to supply coordinates in either convention.

regards,
Chad

On Nov 16, 2011, at 4:20 AM, Denton, Paul wrote:

> Does anyone know what earth model the distaz webservice uses to calculate distances (all I can tell is that it appears not to be a spherical earth model)
>  
> Thanks
>  
> Paul Denton
> UK school seismology project leader
> British Geological Survey
> Keyworth
> Nottingham NG12 5GG
> email pdenton at bgs.ac.uk
> web  www.bgs.ac.uk/ssp
>  
>  
>  
> 
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