Eruption Update for April 16, 2012: Costa Rica, Mexico, Italy, Alaska and Iceland

Rounding up some volcano-related news from around the world: Costa Rica We've talked about rumbling at Rincón de la Vieja earlier this year and it looks like the volcano continues to rumble. Rincón de la Vieja experienced another small phreatic (steam-driven) eruption over the weekend that produced a small plume (impressive nevertheless if you're up close). Costa Rican authorities have closed entrance to the national park in which the volcano sits. Meanwhile, Turrialba has continues to see elevated activity as well, with a "double plume" (see above) from the summit crater. Italy Etna continues to wow the crowd with its paroxysms and the latest was no exception. The mix of volcanic activity and snow at the summit seems to be making for some more explosive activity, producing pyroclastic density currents that aren't pyroclastic flows (see below), but look a lot like them. Dr. Boris Behncke described them as "not typical ...