This week is the Cities on Volcanoes conference – now in its sixth iteration. This year the conference is in Tenerife in the Canary Islands and while I wish I could be there, I’m not. However, we can all live vicariously through Dr. David Calvo, who will be sending daily updates from the meeting. He’s been busy with the usual first day activities of someone helping run a meeting, but here is his first blurb from Tenerife:

CitiesonVolcanoes6 started just today at Puerto de la Cruz (Tenerife, Spain), and right now more than 700 people are sharing their knowledge about volcanism and volcanic hazard management. Eruptions blog is there to bring the latest news on this huge event. Interesting opening session today, with special focus on Canary Islands volcanism. Plenary talks form Hans Ulrich-Schminke, Carmen Romero, Mercedes Ferrer and Ray Cas talking about the origin of the islands, historical volcanism, giant landslides (remember that mega tsunami form La Palma?) and explosive volcanism respectively. 52 countries are represented in this conference, and also different technological advances are shown here. But the most amazing and fascinating section, “Volcanoes for fun”, where hundreds of students from 3 to 12 years have shown what they think a volcano looks like. Sculptures, paints and much more in this fantastic volcanic week at Tenerife, home of Teide volcano. In the next posts we will give further information on different talks, posters and volcanic discussions. Stay tuned!!!

All week look for updates from COV6 here on Eruptions!

Teide volcano in Tenerife in the Canary Islands.


  1. #1 mike don
    May 31, 2010

    Still working through the web page..but I must admit the hairs on my neck stood on end when I saw that one of the committee was one David Johnston…creepy in the extreme until I noticed that THIS David Johnston is a Kiwi

    The idea of using various EM techniques for forecasting is something new to me; sounds interesting

  2. #2 M. Randolph Kruger
    May 31, 2010

    6.6 quake…Andaman Sea..Tsunami?

    Magnitude 6.4

    * Monday, May 31, 2010 at 19:51:48 UTC
    * Tuesday, June 01, 2010 at 01:21:48 AM at epicenter
    * Time of Earthquake in other Time Zones

    Location 11.119°N, 93.698°E
    Depth 127.7 km (79.4 miles)
    Distances 120 km (75 miles) ESE of Port Blair, Andaman Islands, India
    350 km (220 miles) N of Mohean, Nicobar Islands, India
    795 km (495 miles) WSW of BANGKOK, Thailand
    2580 km (1610 miles) SE of NEW DELHI, Delhi, India
    Location Uncertainty horizontal +/- 9.8 km (6.1 miles); depth +/- 18.8 km (11.7 miles)
    Parameters NST= 56, Nph= 56, Dmin=743.3 km, Rmss=1.46 sec, Gp= 58°,
    M-type=teleseismic moment magnitude (Mw), Version=6


    Event ID us2010wybl

  3. #3 Lurking
    May 31, 2010

    This is mainly for the hard core enthusiasts.

    I took the data from (all regions tab) and split it off into 15 minute chunks, converting the magnitudes over to Joules, then summing the energy for each time slice. The red line is a central moving average covering a 24 hour window sliding from 04/17/10 until now.


  4. #4 Renato I Silveira
    May 31, 2010

    #3 Thank you @Lurking. These your graphs sort of keep us “in touch” with Earth’s inner deeds. Waiting for more.

  5. #5 M. Randolph Kruger
    May 31, 2010

    crap lirk you sld send that to the I-Met

  6. #6 birdseyeUSA
    May 31, 2010

    @Lurking 3 – ha – nice graph, even for the not hard core who barley know how to read a graph sorta puts things in perspective – average can be all over the place, doesn’t necessarily mean something is about to happen – wonder if there’s a way to do the same thing leading up to Eyja’s eruption – would be interesting to see how the line looked then…

  7. #7 Passerby
    May 31, 2010

    Not quite yet, MRK.

    Lurking, would you be able to overlay graphics from another plot onto yours (post #3)?

    I will supply the plotted data website.

    If you are game, you may find the correlation to your EQ-15 min walking average pattern be…arresting.


  8. #8 Lurking
    May 31, 2010

    On 2D plots I can put an image in the background, you’ve seen how that comes out. I did an experiment last night with overlaying multiple hurricane wind-speed adjustment traces and a plot of the mass of one cubic meter airmass as a function of altitude, that one came out nice. The caveat was that I had to render each trace in Dplot then copy the data across the other plot. An alternate method of collating curves is to match the scales and then merge them in some sort of paint program (I use Paint Shop pro v8.0… all because Corel trashed the later versions)

    @ Birdseye, I have one of those for Eyj, but I have to go back through the data to make sure it all calculated correctly. There are a lot of data drop outs that I have to account for in the trace.

  9. #9 Princess Frito
    May 31, 2010

    I don’t know about anyone else but now when I read here, I don’t know which thread is current and whether that particular thread and its posts are about Guatemala or the shameless book plug or Marianas or Cities on Volanoes 6 or Eyjafjallajokull or Ecuador or Yasur or Pacaya or Katla. )-:


  10. #10 Renato I Silveira
    May 31, 2010

    @Lurking, keep going! 🙂

  11. #11 Lurking
    May 31, 2010

    Eh… the holes are real. The quakes just petered out and the average dropped to nothing. Due to the central smoothing process, there are gaps.

    By request, Eyjafjallajökull. Data goes back to 3/21 (when I started collecting)

  12. #12 M. Randolph Kruger
    May 31, 2010

    Erik, I think that Bezymianny or Kluchevskoy just blew like a bomb……

    Take a look and evaluate….

  13. #13 Guillermo
    May 31, 2010

    Interesting new info about Chaitén (bottom of the page):

  14. #14 M. Randolph Kruger
    May 31, 2010

    It blew with a vengeance….

    Kamchatkan and Northern Kuriles Volcanic Activity
    Monday, May 31, 2010, 20:45 UTC (June 01, 08:45 KDT)


    BEZYMIANNY VOLCANO: 55°58’N, 160°36’E; Elevation 2,895 m

    Strong explosive eruption of Bezymianny volcano occurred from 12:34 till 12:50 UTC on May 31, according to seismic data. Ash fall in Kozyrevsk village is continuing. The volcano obscured by clouds.

    Big ash cloud remain over Kamchatka at present (NOAA-15, 17:52 UTC on May 31, last satellite): coordinates on the south – 56.04 N, the north – 56.94 N, the east – 161.05 E and all Kamchatka to the west.

    The activity of the volcano could affect international and low-flying aircraft.

  15. #15 Guillermo
    May 31, 2010

    (2nd try to post)
    Interesting new info about Chaitén (end of page):

  16. #16 M. Randolph Kruger
    May 31, 2010

    Bezymianny web camera, I think thats ash thats falling.

  17. #17 Renato I Silveira
    May 31, 2010

    #12-13-14: If eruptive activity doesn’t cease now, my PC will go 2012! So many tabs open at a time!

  18. #18 Princess Frito
    May 31, 2010

    Egads! Yet another thread. Is it about Chaiten? No. MRK’s potential tsunami? No. Bezymianny or Kluchevskoy?

    Wow, this blog is all over the map right now!

  19. #19 Renato I Silveira
    May 31, 2010

    I was about to summon you, Your Highness!
    Chaitén has been upgraded to one of the 15 deadliest. Radiocarbons and witnesses of a huge eruption that occurred 320 years ago!

  20. #20 Guillermo
    May 31, 2010

    Renato, Chaitén was upgraded to the top 15 of the most active and dangerous volcanoes of… Chile.

  21. #21 parclair, NoCal USA
    May 31, 2010

    By the way, the link about Chaitan is a sort of pdf, so it won’t work in google translate. Is there a non-pdf version? Thanks:-)

  22. #22 Renato I Silveira
    May 31, 2010

    #20 @Guillermo 🙂
    Que dices, hombre?! Si, verdad!
    You are right! Too late now: I just spread the post in three different threads. My name is dirtier then a sinkhole. But still, it is great news.
    Gracias Guillermo!
    Maybe I need some rest – too many “explosive” posts here.
    @All: I’m sorry for the hoax, but I promise that I’ll give you a decent translation on Chaiten’s article tomorrow!
    @Dan, I need a Marguerita.
    Good night everybody!

  23. #23 parclair, NoCal USA
    May 31, 2010

    One of my fave webcams is the Halema’uma’u Overlook Vent at

    I was watching an old Nat Geo show about the types of volcanos the other night, and they had pictures of the Erte Ale lava lake. One volcanologist said she loved watching it because it was like a speeded up version of plate tectonics– The crust cools, sinks and the plates move. Every so often there is a flare (in my mind, like a rift eruption). You can get the same image at this cam.;-)

  24. #24 Princess Frito
    June 1, 2010

    @19 Sir Renato you’re forgiven. I understand there have been more than a few Margueritas passed around here, ergo the confusion.

    So now I’m even more confused about which volcanoes this blog is focusing on (and which ones are hoaxes).

    Can someone please lend me a quarter for the Clue Phone?

  25. #25 parclair, NoCal USA
    June 1, 2010

    Well, I’m watching the ash accumulate on the Bezymianny webcam, and watching the plate tectonics demo at the Halema’uma’u cam. And following two threads, and reading about the romantic poets. I’m clueless and changeless;-)

  26. #26 Passerby
    June 1, 2010

    Mulakot webcam: Eyjaf, as she might have been portrayed by an Old Master in tempra and oils.

    Looking quite painterly in the crystal clear morning light.

  27. #27 Kathryn, Australia
    June 1, 2010

    For those wanting to break away from active stuff……
    Iceland: The view on the Þóró camera at the moment is breathtaking – simply beautiful. She’s puffing gently into a blue sky.

  28. #28 randall nix
    June 1, 2010

    Kathryn, Australia you are right the view on both cams is great at the moment….nice steam plume….seems to be growing too.

    OK now I have been busy with other stuff whats this about a hoax volcano?

  29. #29 Daniel, swe
    June 1, 2010

    There was quite a big swarm at Reykjanes peninsula yesterday (50 EQ or so around 7km deep).

    Is the Brennisteinsfjöll volcano still active? I see that it has not had an eruption since the 14th century and that it is/was a fissure with several craters running NE/SW.

    Is that activity normal for the area?

  30. #30 claire uk
    June 1, 2010

    I am getting confused with all the threads,
    Where is the Iceland blog gone?

  31. #31 randall nix
    June 1, 2010

    So many volcanoes….so little time;)

  32. #32 thor
    June 1, 2010

    hehe, randall nix,

    earth is bussy dont you think

  33. #33 La Kat
    June 1, 2010

    @ 18/30/31/32



  34. #34 birdseyeUSA
    June 1, 2010

    @8, 11, Lurking Thank you!! great stuff, interesting comparison.

    Good morning volcanophiles all over the map!! How can we corral this? Maybe designate an Iceland thread for Ejya material? Randall Nix, go to sleep for a little while, we can’t keep up ; )

    By the way, all I get on the Kamchatka cam is tiny pics that won’t get bigger..anyone?

    And I missed Ejya’s beauty last night, drat – all fog/rain/dusted-in now.

  35. Since there is not much graphic material of the recent eruptions all over the globe available, I thought you’d like to see old Mamma Etna in her most glorious days – thanks to a new slides scanner I have now the possibility to make some of my best photographs shine in all their beauty. This is just the beginning, I’ve got to choose the best photos out of about 15,000 slides covering 15 years (1989-2004) of encounters with Etna and the other Italian volcanoes …


  36. #36 parclair
    June 1, 2010

    Boris, thanks for the wonderful photos. I’m in anticipation of Etna now. 😉

  37. #37 stigger
    June 1, 2010

    @34: this is a fairly large image (not that there is anything to see at the moment)

  38. #38 birdseyeUSA
    June 1, 2010

    @37 Than you stigger – well, you’re right about not seeing!

  39. #39 birdseyeUSA
    June 1, 2010
    The B-volcano – except it looks like the plume is on another mountain?? Maybe just a cloud back there.
    Quite something to be living in the shadow of such a big guy.

  40. #41 MadScientist
    June 3, 2010

    Next week I’m meeting someone who’s presenting stuff at Teneriffe – what a hard life some scientists lead. I could have been there as well but had other commitments – way too many other commitments, and I suspect I’ll have a lot more after that meeting …

  41. #42 mike don
    June 6, 2010

    Erik (or any of the professionals on here) Any updates on CoV6 yet? Any of the presentations/papers strike you as particularly interesting?

  42. #43 motel townsville
    October 19, 2010

    A potentate may termination for a pongid but never wish for a bird’s snout

  43. #44 teeny angels
    November 8, 2010

    Could not have arrived at a better time. Outstanding posting.

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