On Thu, Mar 06, 2014 at 01:15:13AM +0100, Peter Wendorff wrote: > Hi Richard, > > Am 05.03.2014 21:50, schrieb Richard Z.: > > On Wed, Mar 05, 2014 at 12:58:51PM -0600, John F. Eldredge wrote: > >> I don't see anything in that definition that says the heat from within the > >> earth has to be a minimum distance below the surface in order to be > >> classed as geothermal. Volcanism is a subset of geothermal, where the hot > >> material is particularly close to the surface. > > > > sometimes it makes sense to distinguish whether something is identical or a > > subset > > of something. > That's true - but a very bad style for osm tagging, if you propose to > use the superset's name (geothermal) for the superset MINUS the subset, > so basically you propose to use the superset's name for a subset. > > Reminds me at the ugly natural=tree issue some time ago, where > originally natural=tree referred to "outstanding", "landmark" or > "important" trees, which lead to trouble when other mappers started to > map "common" trees even in groups of trees or small "forests" one by one. > > By the way: is it volcanic if and only if it's breaking through the > surface, or even in a geysir, or even where it's known to be some ten > meters below the surface? Where it get's volcanic? > > Therefore I disagree about using geothermal for the subset not > containing volcanic activity. Use deep-earth-heat or whatever term for a > subset, or define a specialized subtag for the subsets (volcanic, > ...(non-volcanic?), (others?)).
ok, well I was not proposing the use of a "geothermal" tag at any time. John wanted to know if there is a difference between "volcanic" and "geothermal", and yes there is. Aside of that I don't agree with your argumentation anyway. Why would I introduce a new term like deep-earth-heat when there are perfectly accepted and widely used terms such as volcanic and geothermal? Should use something like "tree-containing-area" to resolve the forrest vs. wood issues once for all times? Richard _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
