On 19 May 2010 13:56, Roy Wallace <waldo000...@gmail.com> wrote: >> Exactly, these locations are used to monitor the movement of a >> tectonic plate, atmospheric conditions and potentially drift of GPS >> satellite locations, none of which has anything to do with "used to >> establish land maps and boundaries" > > That was quite a selective quote of my quote. The first sentence boils
Maybe so, but it seemed as important as any other part. > down to surveying = "determining the position of points". And surveying markers were used determining other points relative to known points, this is the inverse, it's a known point monitoring other points (aka GPS sats). > monitoring (which is indeed just "determining" on an ongoing basis) > the position of tectonic plates are GPS satellites matches this > definition. The position of the plates are derived based on monitoring signals from sats, also plate monitoring is only one function, from GA's website: "Data from all the ARGN sites are automatically downloaded to Geoscience Australia in Canberra using a variety of dedicated phone lines, Internet and/or satellite communications. These data are being used for a range of scientific, geodynamic and other projects including integrity monitoring and legal traceability." _______________________________________________ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
