"a_plutonium" wrote in
oups.com:
So I am looking for some link between Global Warming and increased
volcano activity. In Global Warming we increase world water by the
melting to the artics and ice all over the globe. But can an increase
in ocean water activate more volcanic activity? I doubt it, or I am
skeptical of such a big influence.

It turns out changes in sea level can affect volanos to some extent due to
the changed mass distribution. There are even a few volcanoes that are so
sensitive that you can see a correlation between their eruptions and local
weather (air pressure). However those are the exeptions so I doubt there
will be much of an impact from global warming.

But what about the changes in the magnetic field of earth due to Global
Warming. The reversal of the poles or migration of the magnetic poles.
Could Global Warming affect magnetic pole migration which in turn
increases volcanic activity? That sounds plausible, but I see no direct
link. Until I see a link, I must abide with the idea that Global
Warming and Volcanoes are for the most part, independent processes.

The magnetic field is generated far down in the Earth, and I see no way it
could be affected by global warming on the surface.