On 27/1/20 6:24 pm, John Willis via Tagging wrote:
I agree with you that this is the scale that volcanologists use, but
people want to draw a distinction between something that erupted
recently compared sometime in the last 200 years
Perhaps it is easier to just apply the “active” and “Frequently
active” tags via this third-party data source,
"frequently active " means what?
If it erupted last year .. but not for 200 years before that I'd not
call it 'frequent'.
but it would completely remove mapper’s ability to add a mountain to
this list via tagging.
Possibly "last_eruption=" if that is what you want???
What is really wanted is "next eruption=" and know one knows that :(
Possibly the things OSM can verify are
last_eruption=*
lava=yes/no
Is there anything else easily verifiable? And the next question is - who
is going to use that data?
Inventing a separate schema seems like a bad idea, but I don’t think
people understand “active” could mean an eruption before the
industrial revolution, and people seem to want to add more granularity
to this data. Maybe that is a bad idea, but should be considered.
Javbw
On Jan 27, 2020, at 3:14 PM, Graeme Fitzpatrick
<[email protected]> wrote:
On Mon, 27 Jan 2020 at 14:57, Graeme Fitzpatrick
<[email protected] <mailto:[email protected]>> wrote:
I saw reference to this site a little while back (ironically, the
morning of the White Island eruption in New Zealand :-()
https://volcano.si.edu/faq/index.cfm?question=activevolcanoes
So what do we say: 43 / 70 / 565 / 871 or 1428? :-)
https://volcano.si.edu/faq/index.cfm?question=eov_noteworthy
Or possibly the 71 "Frequently Active" listed here?
As they say, it's hard to point at a volcano & say it's active or
not!
Responding to my own post after looking at the site a bit more
How about using the common terms that everyone recognises, together
with OSM definitions of:
Active - Known to have had major / multiple / fatal eruptions;
frequently active; significant lava flows - the 186 volcanoes that
are listed as "Noteworthy"
Dormant - probably the 1428 "Historically Active" - confirmed &
likely historical eruptions (mixing historical & Holocene together)
Extinct - ain't nothing happening no more! :-)
This does, of course, relate to using info from that list. Do any of
our US friends know how helpful the Smithsonian is when it comes to
sharing data? https://www.si.edu/termsofuse/
Thanks
Graeme
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