Eruptions

Archives for September, 2008

For those of us who track volcanoes and the hazards they present, the general consensus is that Mount Vesuvius in Italy is probably the most dangerous volcano in the world today. This is not because it is the biggest or most powerful, but because it is located on the outskirts of Naples, Italy, a city with over…

Another shaken Colombian volcano

After the news of a sizable earthquake under Nevado del Huila, we can add Nevado del Ruiz to the list of volcanoes that have been shaken up recently. There was a M5.7 earthquake underneath Ruiz on Saturday (9/13), which is a pretty significant event. However, the earthquake was located at over 100 km depth, so likely it…

Huila expected to erupt soon

(Note: Yes, I am posting when I said I wouldn’t, but I felt I needed to post about Colombia). Colombian authorities are evacuating the area around Nevada del Huila after increased seismicity suggests that the volcano will erupt soon. There have been over 700 earthquakes – many of which are clearly related to moving magma…

One more break …

Well, I’ll be taking one more break before summer ends here in California (yes, we run on the quarter system, so classes don’t start until the end of September). This trip is decidedly non-volcanically related, but I will likely not be posting again until 9/16. As always, be sure to check the Volcanism Blog and…

I wanted to post the new MODIS image of Chaiten that caught the volcano erupting on September 3. I won’t go into too much details, there are a lot of great updates over on the Volcanism Blog, but needless to say, the volcano is still very active, producing tall ash columns (you can see the…

New lava lake sighted at Kilauea

Not sure how it was kept quiet for most of the week (well, at least to me), but geologists at the HVO have noticed a new lava lake in Halemaumau Caldera on Kilauea (Hawai’i). The lava lake is around 330 feet (~100 meters) below the crater rim and ~160 feet (50 meters) across with sections…

Earthquake near Nevado del Huila

Whether this is a coincidence or not, I thought I’d mention a report of an earthquake near the crater of Nevado del Huila in Colombia. The earthquake is reported as a magnitude 4.6 and at a depth of 20 km (although that is only a rough estimate), indicating that magma might be moving up the conduit…

Philippine volcanoes are restless

Two volcanoes on the island of Luzon look like they might be primed for activity, at least according to PHILVOLCS, the Philippine Institute of Volcanology and Seismology. Both Mayon and Taal (above) are showing signs of increased seismicity. Only Mayon is actively steaming right now and the volcano had a mild ash eruption on August 10 as…