TYB
>They are not exactly in the same spot
Seismic events would represent the movement of magma inside the earth, w/ volcanoes sometimes 1, 2 or even 5 km deep depending on the local geology and geometry of the magma chamber.
Also stress relief (from magma flowing out or venting of gasses) can cause rocks to crack causing small seismic events at some distance.
IR/heat map would actually only show where the actual lava (or hot gas) is on the surface of the earth.
There are case where what you said applies, like for example when you have a lot of ice, snow or othe type of water (like underground lakes). Water explosively evaporates when in contact with magma.
Also, there's diff types of magma: Granitic (acidic) which is very viscous, and on the other side basic (basalt) which flows nicely with low viscosity.
Mt St Helens had acidic magma. it wouldn't easily flow through cracks and fissures, that's why the immense explosion when built uppressure was high enough.
Today, with the canaries, to me it looks more like basaltic lava flow, flowing nicely and absent some other sicrumstances, I wouldn't expect any violent event.
>Is acidic magma moreso associated with destructive pyrolclastic flows
yes, but not necessarily. Imagine yellowstone having acidic magma (no volcano cone) and it blows.
You'd have a huge explosion but not a classical pyroclastic flow as there's no steep flank.
In other words, you can also have pyroclastic flow in a very intense and sudden basaltic eruption when it's powerful enough and you have a volcanic cone with the eruption taking place on top (imagine a crater on a basaltic volcano that hasn't eruopted for a long time, and the rock in the crater just doesn't have enough fissures and cracks for a sudden build up of magma prressure from inside).
PF's are basically just a mixture of hot gas, dust, tephra, small rocks, all really hot, flowing down the flank of the volcano due to gravity real fast.
don't know. depends on the slope of the terrain and the underground/geology.
unlikely probably that it "will collapse", but it has happened that an entire layer was destabilized, detached from the surrounding material and slid downwards some slope. Sorry, don't know if that's possible in this case.
>I find this subject very interesting
If you're moar curious, one of my favourite textbooks on volcanology is Schmincke's "Volcanism" (2004).
Real good, lots of pics and not very hard to read/understand.
You should be able to find it for example here: https://b-ok.cc/book/1263916/1af7ab