eruption video
eklemetti | January 20, 2010Quick news updates for a Wednesday...
The island (and volcano) of Gran Canaria in the Atlantic Ocean. It last erupted in ~20 B.C.
The earthquakes keep coming at Yellowstone - up to a M3.5 in the last 24 hours. Time has already put up an article wondering about whether people need worry about the swarm (there might be other things to worry about before this swarm). YVO's statement on the earthquake swarm seems pretty standard (as it should be): "At this time the Yellowstone Volcano Observatory does not consider the swarm to be unusual and the earthquakes are likely related to tectonic fault…
eklemetti | January 19, 2010
A hot spring in Yellowstone National Park. Image courtesy of the USGS.
Yesterday I left a little teaser about the current earthquake swarm going on at the Yellowstone Caldera. Eruptions readers have come through with even more information on the swarm. Over 250 earthquakes have occurred in the park over the last few days, most between 0.5-3.1 on the Richter Scale - and getting larger each day. The swarmtarget="_blank"> is centered 10 miles northwest of Old Faithful, Wyoming and 9 miles southeast of West Yellowstone. However, before everyone gets too excited, Dr. Robert Smith of University…
eklemetti | January 8, 2010The weekend! No updates until next Tuesday - I'll be off to give a talk at Western Michigan University.
Coal-erupting volcanoes defeat the Permian dinosaurs ... according to FOX News.
Anyway...
You know that mainstream media (FOXNews) must have done something appalling when even I can't write about it thanks to my seething rage. I'll let Chris Rowan at Highly Allochthonous and Ralph at the Volcanism Blog sum up how FOX News tried to explain the extinction of the dinosaurs (hint 1: it happened before dinosaurs even existed. hint 2: volcanoes erupt coal now).
After you've read about that…
eklemetti | January 6, 2010Two volcanoes down, two volcanoes up!
Fire fountain on Nyamuragira in the Congo, January 2010.
DownMayonActivity at Mayon has continues to drop - although PHIVOLCS warns that an eruption could happen at any moment and without much warning. About a quarter of the evacuated families have no returned home since PHIVOLCS gave the OK to return home on January 2 - but Philippine officials are still on alert in case evacuations have to be reinstated.
Redoubt
The resurgent Redoubt is no long ... er ... resurging? AVO lowered the alert status to Green - meaning normal/background levels of activity.…
eklemetti | January 5, 2010Yet another new eruption for 2010!
Turrialba volcano in Costa Rica in an undated photo.
Turrialba in Costa Rica erupted today, prompting the evacuation of tens of people from the region near the volcano. The eruption appears to be relatively small, producing ash and some pyroclastic material. The area around the volcano is not very populated and isn't near the profitable coffee-growing region of Costa Rica. This eruption is the first at Turrialba since 1866, over 130 years ago. That eruption was a VEI 3, so Turrialba is definitely a volcano to watch if the activity continues.
Also in Costa…
eklemetti | January 3, 2010A pile of news for the new week!
The glow of new lava flows from Nyamuragira in the Congo, taken from the Virunga Park Headquarters, January 2, 2010.
MayonPHIVOLCS may lower the alert status at Mayon to Level 2 after almost a week of lower seismicity and no ash explosions since December 29th. Schools that were being used as evacuation centers were also returned to teachers and students for the start of classes after the Christmas holiday. However, the Albay provincial government is now considering a plan to permanently move everyone who lives within the 6-km danger zone around Mayon, even if…
eklemetti | December 18, 2009Finals day for me, so I'll be grading grading grading ... but first, a little news:
The May 2009 eruption of West Mata. Image courtesy of NSF and NOAA.
I covered it in May, but the popular press is now all over the West Mata undersea eruption - mostly thanks to the media boost that AGU can give you. It is worth checking out the new articles on the eruption in the Lau Basin near the Marianas, mostly because of the nifty video of the eruption. In the video, you can clearly see both an explosive component of the eruption as gas "burps" out through a cooled carapace and a more effusive pillow…
eklemetti | December 15, 2009
Piton de la Fournaise erupting on December 14, 2009. Image courtesy of the Observatoire Volcanologique du Piton de la Fournaise.
A while back I reported on a brief eruption at Piton de la Fournaise on Reunion Island and now a number of Eruptions readers have pointed out to me that it has erupted again (french). Seems like a similar event to the previous, with fissure vent effusive flows on the southern and eastern slopes of the shield volcano.
Here is the report from Guillaume Levieux of the Observatoire Volcanologique du Piton de la Fournaise:
Piton de la Fournaise volcano erupted Monday,…
eklemetti | December 2, 2009An ash plume from Soufriere Hills on Montserrat, taken from the ISS on October 11, 2009.
If you ever wonder what might happen to the U.S. if a large volcanic eruption, lets say from Rainier or Long Valley or Shasta, occurred, you can look at the island of Montserrat for some of the potentials problems. The renewed activity at Soufriere Hills (video link) that started in October is causing problems with the power infrastructure of the island - specifically the ash from the eruption is falling on power lines and damaging them. Ash has a minor electrical charge, so it will coat anything with a…
eklemetti | October 28, 2009I'll be giving a talk this afternoon here at Denison on rhyolite generation, so I might be a little brief this morning.
Undated image of Mayon in the Philippines.
The province of Albay in the Philippines is on alert for both a typhoon and a volcano (that country seems to be hit with that 300,000 may need to be ready to evacuate if the volcano continues to show signs that it might erupt - in fact, Mayon is producing ash as of this morning, albeit only one minor ash explosion.
Lava flows from Kilauea are drawing crowds as they inundate a road in Kalapana. There is a nice video link to the…
eklemetti | August 12, 2009The Royal Gardens subdivision in Hawai'i being inundated with lava flows during a 1983 eruption of Kilauea. Image courtesy of the USGS.
The game of insurance is everywhere in the news these days so it isn't too surprising to run across this brief article about the perils of getting insured if you live on an active volcano. Many people who live on the big island of Hawai'i face this challenge because a large swaths of the island fall into what is called a "Lava Zone 1", which more or less means that you live someplace that lava is likely to visit in the foreseeable future. Considering that the…
eklemetti | July 30, 2009The next up in my Volcano Profiles Series, is one of the most remote volcanoes on the planet, yet also one of the more closely studied and monitored (albeit from afar). Joining Vesuvius, Hood and Rabaul is Mt. Erebus, an active volcano on Ross Island in Antarctica and it definitely has some unique features.
VOLCANO PROFILE: MT. EREBUS
Mt. Erebus in Antarctica with a local resident in the foreground.
Location: Antarctica* (technically, it is on the part of Antarctica claimed by New Zealand, but the Antarctic Treaty System more or less makes the continent an international zone.)
Height: 3,794…
eklemetti | July 9, 2009Hydrothermal fields are tricky beasts. They can wax and wane as the magmatic system heats and cools, as the water table rises and falls and as other events such as earthquakes or explosions might change the conduit systems. Changes are relatively common, as we've seen in recent events in the Yellowstone Basin and with the changes within the Waimangu Valley in New Zealand. Understanding the cause-and-effect relationships in these fields can be a challenge even to the most seasoned volcanologist.
Prikolny Geyser near Uzon Caldera in Kamchatka. Image taken in July 2009.
Case in point is the new…
eklemetti | July 6, 2009A quick update on the rockfall in the Halema`uma`u (got it right this time!) Crater at Kilauea. Last week a rockfall blocked the vent that had been glowing for most of the year from the lava below, but the debris clogged the vent, producing minor accidental tephra explosion.
Lava in the recently "clogged" Halema`uma`u vent at Kilauea. Taken July 6, 2009, courtesy of HVO.
Well, it didn't take long for lava to retake the "clogged" vent. New video from HVO shows lava bubbling back up through the clogged vent (see the video in the above link). The lava has formed a small lava and even produced…
eklemetti | June 26, 2009Chaiten 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 submitted a question but don't see the answer here, do not fret. Likely it just means that I needed to do a little more research into the question and will get to it in a later mailbag!
So, without further ado ...
Mark M.: Here in the Appalachians we have very dense crystalline rock (…
eklemetti | June 14, 2009I won't try to recap all the news from last week, but I did notice a few articles from this weekend worth noting:
The Big Obsidian Flow at Newberry Volcano. This rhyolite lava flow erupted at ~1,300 years ago.
Geologists in Greece are keeping an eye on a submarine volcano called Columbus. Apparently a number of M4+ earthquakes have been reported, the sea floor has deformed and there have been "hot air eruption" (? ... I am a little skeptical of the last one without more details). The article is a little fuzzy on the details: the volcano is 6.5 meters southeast of Santorini and the Santorini…
eklemetti | May 17, 2009Mount Saint Helens less than 30 seconds after a sector collapse that triggered one of the largest eruptions in the Cascades in the last 500 years.
Today is the 29th anniversary of the dramatic eruption of Mount Saint Helens in Washington state. The eruption dramatically changed the landscape around the volcano along with greatly increasing our understanding of volcanic sector collapses and explosive eruptions. I was going to write a larger entry on the event, but alas, I will instead be lecturing to 100 UC Davis students about the event today instead (sorry folks!)
Instead, if you want to…
eklemetti | April 28, 2009This is another busy Wednesday for me as the Geology Dept. at UC Davis will be hosting Dr. Jacob Lowenstern, USGS scientist and director of the Yellowstone Volcano Observatory. He will be giving the weekly seminar, along with another talk in the evening at Sacramento State as part of the Volcanological Society of Sacramento meeting (which is open to the public for those of you around Sacramento). I'm especially excited for the evening talk entitled "Domestic volcanic unrest and activity in 2009: Kilauea, Redoubt, Yellowstone and Washington, D.C.". I'll be sure to report any fun tidbits.
For…
eklemetti | April 17, 2009The weekend is rolling in and I might end up spending most of it in the 90+ degree California weather, so unless something big comes up (volcanically), I'll leave you with a few news bits.
Llaima
Llaima in April 2009. Image courtesy of the NASA Earth Observatory
This is a true color image of Llaima in Chile, provided by the great folks at the NASA Earth Observatory. You can clearly see the dark grey new tephra on the main summit cone along with the grey ash covering the snow on the southwestern part of the volcano (north is up). A few other fun features are some smaller parasitic cones in…
eklemetti | April 16, 2009Mount Pagan in the Mariana Islands erupting on April 15, 2009. Image courtesy of the NASA Earth Observatory.
Up until fairly recently, a lot of volcanoes got away with erupting without anyone knowing the better. However, with all the "eyes in the sky" we have these days, even remote oceanic volcanoes get caught in the act of erupting. Case in point is this image (above) of Mt. Pagan in the Mariana Islands erupting. It was captured by the MODIS satellite yesterday and it shows a health ash plume emanating from the volcano. Pagan is an oceanic stratovolcano on the sparsely populated island of…