eklemetti | December 2, 2009We get a new update from the Smithsonian/USGS Global Volcanism Program ...
Highlights (not counting Soufriere Hills or Gaua) include:
The Weekly Report mentions the mystery eruption/noneruption of Karkar in PNG. Specifically, they report:The report also stated that ash had merged with a thunderstorm cloud and had become unidentifiable.
Two ash plumes (11/25, 26) that reached at least 9.1 km / 30,000 feet were reported by the Darwin VAAC ... but as we know, it is far from clear that anything actually happened at Karkar last week.
Activity has quieted significantly at Chaiten in Chile, with…
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 | December 1, 2009So I was browsing around for a new MVP and I stumbled across the following image:
It is a stunning image, capturing this stratocone filling in what might be an old caldera. The problem is, well, I have no idea what volcano this is and the page I found it on (some random wallpaper site) had no information on the image whatsoever. I'm guessing it might be somewhere in Alaska or Kamchatka ... but not sure at all?
So, now, all you volcano-image experts can use your powers for good. Any idea where this image was taken and what volcano(es) are in it? Ideally, if you can find a corroborating image…
eklemetti | November 30, 2009Back to work after Thanksgiving Break ... lets clean up a few news items I missed trying to figure out the non-eruption of Karkar.
Undated photo of the summit area of Gaua, Vanuatu.
There was an actual eruption - or, more correctly, a continued eruption - of Gaua in Vanuatu. The current activity has prompted the evacuation of 300 villagers from the island and they will not be able to return until activity wanes. Tourists were also told to stay away from the volcano, but the airport on the island has not been affected by the eruption, which might suggest the activity is relatively localized.…
eklemetti | November 29, 2009Last week, I reported that Karkar in Papua New Guinea had erupted. This was based on reports from Volcano Live and from the Darwin VAAC that said the volcano had produced at least 1, maybe 2, ~13 km / 45,000 foot ash columns. That is not a trivial ash column - you would think a large eruption was needed to produce such an ash column (and you'd be right).
Then, no news. Nothing. I (and other Eruptions readers) scoured the web for more information on this phantom eruption at Karkar. Not a peep on noise about any eruption, let alone an eruption to send ash above 40,000 feet.
Recent reports from…
eklemetti | November 26, 2009Here is Part 2 of the Q&A with Dr. Boris Behncke. You can also check out Part 1.
Undated image of Stromboli in eruption.
(Shirakawa Akira) 1. Would a large scale eruption (VEI 5 or greater) of Mt. Etna like the ones occurred in 122 BC and 1500 BC (disputed) be possible again in the foreseeable future? Or is the volcano slowly "dying" although the last eruption ended in July 2009 has been one of the longest ever recorded?
2. Not really related to volcanism, but close: does INGV plan to distribute seismic data from seismic stations of its Rete Sismica Nazionale, including stations from…
eklemetti | November 25, 2009Happy Thanksgiving (for my US readers) ... otherwise happy Thursday to the rest of the world. I've got another Mystery Volcano Photo for you all. Good luck!
Current Standings:
Don Crain - 2
gijs - 2
The Bobs - 2
volcanista - 1
Lockwood - 1
Elizabeth - 1
Ralph - 1
Anne - 1
Cam - 1
gg - 1
Boris Behncke - 1
Damon Hynes - 1
eklemetti | November 25, 2009Karkar volcano as seen from space.
Eruptions reader The Bobs left a note mentioning that there may have been a 'significant' eruption at Karkar in Papua New Guinea. The only place I can find information is John Seach's Volcano Live:
An eruption occurred at Karkar volcano at 6:39 pm on 25th November 2009. The eruption plume reached a height of 45,000 ft. A magnitude 5.1 earthquake hit 90 km SSE of Karkar volcano 7.5 hours before the eruption.
I don't know too much about Karkar, but the GVP says that it is a volcanic island made of a pair of calderas, with the inner caldera formed in the last 1…
eklemetti | November 24, 2009First off, I want to thank Dr. Behncke for taking the time to answer your questions - and also, thank you to all who sent him some thought-provoking questions. In fact, the questions and answers take up about 12 pages of text, so the Q&A will be divided into two parts.
If you want to see one of the previous in the Q&A series, check out:Dr. Jonathan Castro.
Question and Answer with Dr. Boris Behncke of the Italian National Institute of Geophysics and Volcanology in Catania.
Dr. Boris Behncke.
Questions for Dr. Boris Behncke
(Bernard Duyck) Qu'en est-il de l'évolution du mécanisme é…
eklemetti | November 23, 2009Back from Iowa, time for some volcano news. Look for the answers to your questions for Dr. Boris Behncke to get posted later this week.
(And thanks for all the comments and kind words in the Open Thread. I'll start thinking about how to implement a lot of these in the next few weeks).
Undated photo of Volcan Galeras in Colombia.
Galeras stopped traffic near Pasto, Colombia and prompted the evacuation of 1,000 people over the weekend when it erupted. The volcano apparently produced ash that covered towns near the volcano, including Pashto, and the highway connected that town with Pasto was…
eklemetti | November 19, 2009
I'll be busy for a couple days when I'm off at University of Iowa, so I thought I'd leave this thread available for you to talk. Specifically, I'm interested in what you might be interested in seeing (or not seeing) on Eruptions. I've tried a number of features (Mystery Volcano Photo, Q&A, Volcano Profiles) - do you want to see more/see less of these features with the usual volcano news? More/less coverage of volcano research from the literature? Let me know what you think and how things might be better.
See you next week!
eklemetti | November 18, 2009The latest news from the USGS/Smithsonian Global Volcanism Program Weekly Volcano Report ...
Highlights (not including Mayon) include:
Strombolian eruptions and small pyroclastic falls at Arenal in Costa Rica.
3 km / 10 000 foot ash plume from Bagana on Bougainville Island in Papua New Guinea.
Rumbling noises, ~4.5 km / 14 000 foot ash plumes and incandescence were all reported coming from Fuego in Guatemala.
Steam-and-ash from Popocatepetl near Mexico City reached 7.4 km / 24 300 feet.
Satellite images of Shiveluch revealed a large thermal anomaly - the new lava dome - along with multiple…
eklemetti | November 18, 2009It has been a slow week for volcano news (and a busy week for me), so I apologize for the abundance of MVPs this week. I've tried to find a good one in the many images submitted to me by Eruptions readers, and #15 is just one of those photos. If you have images you'd like to share with me for MVP or other uses, please email them to me at
. (However, I should note that you can't win by identifying your own volcano photo!)
MVP #13 was Lava Butte near Newberry volcano in Oregon. It is a lovely small scoria cone that you can walk/drive to the summit. From there, you get a spectacular view of the…
eklemetti | November 16, 2009Well, now that Lockwood got #13 on the first try, I will have to reach back into my vault to attempt to find a stumper ...
Current Standings:
Don Crain - 2
gijs - 2
volcanista - 1
Lockwood - 1
Elizabeth - 1
Ralph - 1
Anne - 1
Cam - 1
gg - 1
The Bobs - 1
Boris Behncke - 1
Good luck.
eklemetti | November 16, 2009Busy week leading up to Thanksgiving for me, with a talk to give later in the week and quizzes a plenty!
The Mystery Volcano Photo series has a couple clear frontrunners now, with both Don Crain and Gijs with multiple points.
Current Standings:
Don Crain - 2
gijs - 2
volcanista - 1
Elizabeth - 1
Ralph - 1
Anne - 1
Cam - 1
gg - 1
The Bobs - 1
Boris Behncke - 1
Here's #13 ... good luck!
eklemetti | November 13, 2009Just a note to all my readers: I've discovered today that Gmail has been eating (sending to the Spam folder) a significant amount of emails I've received to eruptionsblog gmail.com. This includes some of the questions submitted to Dr. Behncke (and other emails I'm sure) and comments pending on the blog. Sorry about the inconvenience, especially if I haven't replied to your email. I'll try to catch up over the weekend.
eklemetti | November 13, 2009We've arrived at Friday. The local time is 8:45 A.M. Set your watches accordingly.
Batur, Indonesia
Some news!
More evacuations have been authorized near Mayon as the volcano continues to show signs of significant eruption. Activity has quieted some since Tuesday's explosion, but PHIVOLC still expresses concern that an eruption in impending within weeks. I'll also add a link to this story on Mayon, not because it has new news, but because it has quiet possibly the worst accompanying photo for this story I've seen so far. I mean, really, couldn't you have found some stock picture of Mayon…
eklemetti | November 11, 2009Mayon volcano in Albay province, Philippines.
Yesterday, Mayon in the Philippines, which has been showing signs that it might be headed towards a significant eruption, produced an ash plume that reached as high as 3.5 km / 12,000 feet according to some reports. Evacuations of villages near the volcano have begun, while many other towns have been supplied with wireless announcement systems to help with evacuating if the volcano continues to show signs that it will experience a significant eruption.
Last week, there were reports that a new dome was forming at the summit of Mayon and if this new…
eklemetti | November 11, 2009The volcanoes of Italy must have known that Dr. Boris Behncke would be in the Q&A spotlight here at Eruptions because three have shown signs of new activity over the last week. Here is a quick summary based on information from Dr. Behncke and Sonia Calvari of IGVN.
Etna erupting in 1989. Image by Dr. Boris Behncke.
Etna
On November 6, Etna in Italy appears to have entered a new phase of activity. The volcano had not produced any explosive events since July 4, 2009, but since 11/6, Etna has experienced a series of deep-seated explosive events - some of which suggest there is a lava lake…
eklemetti | November 10, 2009Geologic and structural map showing the extent of the Campi Flegrei caldera on the north of the Bay of Naples, Italy. Image courtesy of INGV.
One of the writing assignments I always enjoyed in high school was the "compare and contrast". You could sit back and look for stylistic differences between writers and texts - potentially offering signs about the nature of the writers motivations.
I still find it fun - case in point, two article I read about the research drilling that is about to start at the Campei Flegrei in Italy. The Campei Flegrei is a large caldera system that most recently…