Changeset: 144921543
corrigiendo a humedal el salar de uyuni pero preservando otras etiquetas (dessert/seasonal/salt). actualizando curso de río. añadiendo canales industriales y area de explotación minera (sal) y actualizando áreas de lagunas de evaporación de sal.
Closed by 5m4u9
Tags
changesets_count | 14749 |
---|---|
created_by | iD 2.27.3 |
host | https://www.openstreetmap.org/edit |
imagery_used | Bing Maps Aerial |
locale | en |
resolved:crossing_ways:waterway-waterway | 1 |
source | local knowledge;bing |
warnings:crossing_ways:highway-waterway | 1 |
Discussion
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Comment from Aleksandar Matejevic
Hi, I have a question about Salar de Uyuni, this is salt desert. This is not a wetland. Yes, when there are rains it becomes a "lake" but it is not its primary geological definition. The wetland is most of the time underwater/wet, but this one is mostly dry.
Should this remain natural=deset
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Comment from 5m4u9
Hi,
I also think that "wetland" is not the most ideal, but I restored to this tag because I wanted to standardize "temporarily" with the other salt flats of the triangle (salar atacama and salar hombre muerto).
But, the drawn area isn't exactly a "desert", this definition I think is more precise: "Salt Pans: Naturally formed salt pans are expanses of flat land, found in deserts, where the surface is covered in salt and other minerals." https://saltassociation.co.uk/education/physical-geography/
As mentioned in this comment (https://wiki.openstreetmap.org/wiki/Talk:Tag:natural%3Ddesert#Widely_Misused), these natural elements should have their own tag, but as each case has different characteristics it will be difficult to standardize.
Locally in Bolivia, it isn't considered a desert, even though there are several deserts in the area. I think the area drawn has multiple tags describing parts of what it is. The tag "geological=salt_plan" could satisfy the geological description, as "tourism=attraction" satisfies the photogenic feature of the place...
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Comment from 5m4u9
... In a first (scientific) study in 1975, the white area drawn on the map was considered a seasonal basin or seasonal evaporating lake (a tentative label could be natural=water + water=basin), but it is also considered a deposit of mineral resources (potassium, salt, magnesium, lithium, boron). The drawn area is the one that is seasonally flooded by several rivers that flow into it and a part of the rainfall.
I have yet to review some books and studies and will be proposing labels to those who edited the other salt flats.
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Comment from 5m4u9
first (scientific) study: https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_7/divers2/01303.pdf
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Comment from Aleksandar Matejevic
Thanks for sharing all this information. I do agree with you that some additional tag should be introduced for these situations since it is all mentioned in the same scenario. Would you like to create a proposal for OSM Wiki?
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Comment from 5m4u9
Yes and no, as far as I read about this salar (salt flat) it is an endorheic basin (https://en.wikipedia.org/wiki/Endorheic_basin) with a salt "crust covering" brine waters from the lake.
I read "natural=playa" proposal which doesn't seem good. On the other hand, "natural=dry_lake" seems to be unopposed, but I don't agree to create new "main" tags, but maybe a sub-tag.
Combination of tags:
natural=water
intermittent=yes (because water is not present all the time)
seasonal=wet_season (to describe which seasons are with water)
salt=yes
surface=salt
geological=salt_pan (for geological feature)I was thinking of add "basin=*" tag, but apparently in OSM it refers to man-made features.
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Comment from Aleksandar Matejevic
I would rather go with https://wiki.openstreetmap.org/wiki/Tag:natural%3Ddesert
my combination would be:
natural=desert
surface=salt
geological=salt_pan
water=lake
intermittent=yes
salt=yes
seasonal=wet_seasonI think this describes it more precisely during most of the time within the year.
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Comment from 5m4u9
But, desert only describe surface feature. This "salar" is more than desert, maybe desert have to map in other area.
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