<div dir="ltr"><div dir="ltr">On Fri, 24 Jan 2020 at 20:44, Kevin Kenny <<a href="mailto:kevin.b.kenny@gmail.com">kevin.b.kenny@gmail.com</a>> wrote:<br></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Fri, Jan 24, 2020 at 2:38 PM Paul Allen <<a href="mailto:pla16021@gmail.com" target="_blank">pla16021@gmail.com</a>> wrote:<br>
> But "active" is too broad a term to be meaningful, I think.<br>
<br>
Well, then, let's clarify the intention, narrow the definition, choose<br>
a more appropriate keyword if necessary, wikify the narrowed<br>
definition, and use that, rather than rejecting the idea out of hand.<br></blockquote><div><br></div><div>Good idea. So I did some digging. There are no scientifically-agreed</div><div>definitions of the terms. It's more of a folksonomy that scientists sometimes</div><div>use when talking to "folks." See <a href="https://en.wikipedia.org/wiki/Volcano#Volcanic_activity">https://en.wikipedia.org/wiki/Volcano#Volcanic_activity</a></div><div>(it's fairly representative of other definitions I've found). It's messy. There's a</div><div>"it hasn't erupted in X years so it's dormant" definition in there, but supervolcanoes</div><div>like Yellowstone are excluded. Iceland's volcanoes are very interconnected. Etc.<br></div><div><br></div><div>About the only characteristic I've seen so far upon which there is broad</div><div>agreement (and is verifiable by ordinary mappers) is the presence of a lava</div><div>lake (which many people probably think of when they see the term "active</div><div>volcano"). That's mappable, in my opinion.<br></div><div><br></div><div>If we can pin any other terms down more precisely, and show that scientists agree</div><div>with those definitions, and scientific literature that meets a general scientific</div><div>consensus is available classifying volcanoes in those terms, then I'm all for it.</div><div><br></div><div>-- <br></div><div>Paul</div><div><br></div></div></div>