On Mon, 27 Jan 2020 at 00:33, Paul Allen <pla16...@gmail.com> wrote: > > Good idea. So I did some digging. There are no scientifically-agreed > definitions of the terms. It's more of a folksonomy that scientists > sometimes > use when talking to "folks." See > https://en.wikipedia.org/wiki/Volcano#Volcanic_activity > (it's fairly representative of other definitions I've found). It's > messy. There's a > "it hasn't erupted in X years so it's dormant" definition in there, but > supervolcanoes > like Yellowstone are excluded. Iceland's volcanoes are very > interconnected. Etc. > > About the only characteristic I've seen so far upon which there is broad > agreement (and is verifiable by ordinary mappers) is the presence of a lava > lake (which many people probably think of when they see the term "active > volcano"). That's mappable, in my opinion. > > If we can pin any other terms down more precisely, and show that > scientists agree > with those definitions, and scientific literature that meets a general > scientific > consensus is available classifying volcanoes in those terms, then I'm all > for it. > > 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! Thanks Graeme
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