Dome

Eruptions

Category archives for Dome

Coulées!

As a volcanologist, I am partial to impressive lava flows, especially in volcanoes that erupt material that you’d think wouldn’t produce big flows. For example, there are quite a few volcanoes in the Chilean Andes that erupt dacite lavas, which are relatively viscous (sticky), so you might expect it to erupt explosively. However, you can…

Did I mention its a busy week? The lava lake at Erta’Ale in 2008. Image courtesy of Stromboli Online. Our Icelandic saga continues, with more earthquakes and more speculation/information on the parts of Eruptions readers. Keep up the discussion – I’ll be fascinated to see who turns out to get closest to what actually happens,…

Mayon eruption update for 12/15/2009

The new dome erupting at Mayon in the Philippines on December 14-15, 2009. It appears that the eruption that PHIVOLCS had been waiting for at Mayon has arrived, with new magma reaching the surface and spilling down the slopes of the volcano. Or, as CNN International put it: The island nation’s most active volcano after…

All the news to start the week: Galeras with a grey ash-and-steam plume behind Pasto, Colombia. Well, after my article on Friday about Colombian volcanoes, Galeras must have decided it was left out. The volcano has been placed back at alert level Orange/II (eruption in days to weeks). An increase in seismicity and sulfur dioxide…

Chaiten has made it back into the news in the past couple days, both with new events at the caldera and with findings from the initial blast in May 2008. Here goes: Chaiten erupting in 2008. Third Dome Spotted The latest USGS/SI Weekly Volcanic Activity Report mentions that over the last week, Chaiten experienced what…

Large eruption underway at Shiveluch

Undated photo of Shiveluch volcano in Russia. In case you haven’t seen the report yet, Shiveluch in Kamchatka has gone, as they say, “non-linear”. KVERT has raised the alert level at the volcano to “Red” with reports of many strong explosions and an ash plume of >32,800 feet / >10 km. This all suggests that…

The slow summer for volcanic eruptions continue. Only 11 updates in this week’s USGS/SI report. Thanks again to SI’s Sally Kuhn Sennert for compiling the news! Highlights this week include (not including Kilauea) include: Tungurahua in Ecuador produced some minor lahars on August 21 to go with steam-and-gas emissions. Popocatépetl in Mexico produced an ash…

Redoubt steaming in early 2009. Image courtesy of Calvin Hall. It has been a while since we spoke of Redoubt, but now it seems the reason why might be that the eruption is ending. AVO lowered the Alert Level at Redoubt to Yellow from Orange, indicating that they believe the volcano is less likely to…

Eruptions Mailbag for June 2009

Chaiten in Chile erupting in January 2009. Even after over a year of activity, Eruptions readers are still captivated by the volcano. Thanks for sending me your questions about volcanoes and volcanism. I’ll try to tackle some hear – but as always, keep the questions coming! Send them to For those of you who have…

Your weekly dose of volcano news brought you by the Smithsonian Institute GVP and the USGS. This week’s highlights (not counting Sarychev Peak and Turrialba) include: 13,000 foot / 4 km ash plumes from Rinjani in Indonesia. This is part of the continuing eruption there. The alert level was lowered at Galeras, Colombia to “Orange”…