[Tagging] Hot springs

Dave Swarthout daveswarthout at gmail.com
Tue Mar 4 00:35:02 UTC 2014


Speaking as a chemist, the term "sulfuric" would imply strong acidity as in
sulfuric acid. What you're looking for I believe is a term to indicate if
the water smells bad or not. Many hot springs have a rotten egg smell lent
to the water by dissolved hydrogen sulfide (H2S), some of which escapes
into the atmosphere to assault one's nose. This water would also be acidic
but not to the same degree as "sulfuric" suggests. Perhaps sulfide=yes/no
or sulfurous=yes/no would work better.

Also, I like the term water_characteristic or something similar. A more
general, because not limited to water, but less common term might be
effluent_characteristic. This would cover hot springs that involve mud,
steam, or other stuff coming out of the ground.  If water only, then
effluent_characteristic=water
or
effluent_characteristic=water+steam
It might even be extended to include hydrogen sulfide:
effluent_characteristic=water+sulfide

Regards,
Dave


On Tue, Mar 4, 2014 at 6:41 AM, Richard Z. <ricoz.osm at gmail.com> wrote:

> On Mon, Mar 03, 2014 at 01:53:48PM +0100, nounours77 wrote:
> >
> > > I have significantly changed
> https://wiki.openstreetmap.org/wiki/Proposed_features/Hot_Spring
> > > with the intention to revive the proposal - thanks for any comments
> and enhancments.
> >
> >
> > Dear Richard,
> >
> > thanks for your initiative. I agree with your arguments why a specific
> tag "natural=hot_spring" is better than "natural=spring" and "temp=*". It
> is something different.
> >
> > Not sure about the word "consistence" which looks strange to me (but I'm
> not native). And also not very sure about the values: E.g. "mineral" -
> every spring contains minerals, the interesting point is which and how
> much. "sulfuric" - just a special case of "mineral" - why pick this one and
> not the others
>
> forgotten to answer this detail.. sulfuric may be a special case of
> mineral but the
> difference is very characteristic.
>
> I am in favor of mapping the most characteristic water properties first
> and possibly more
> detailed chemical composition as far as known and somehow important.
>
> Richard
>
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-- 
Dave Swarthout
Homer, Alaska
Chiang Mai, Thailand
Travel Blog at http://dswarthout.blogspot.com
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