20 comments on “Mount Kanaga – a candidate for a flank collapse?

  1. Hi agimarc, thanks for this post! Well, I still keep an eye on Kanaga, waiting for the collapse! 😉 Although, sadly, AVO have taken the camera off their site again, hard to keep an eye on now.


  2. Yesterday(!) IGP published a report on Sabancaya, reporting increased seismicity, an ash explosion from the volcano on 27/8 and steam/gas emissions up to 1800 m during the week, also five new fumaroles have been sighted on its flanks recently. A seismogram still available to the public is showing many events indeed, but it has been like this, on and off, with Sabancaya.

    – There used to be a real-time webcam, but that hasn’t updated since Aug. 29.
    – There used to be a real-time seismogram with event classification, but that hasn’t updated since Aug. 31.
    – There used to be a real-time webcam image with lines for column hight, but that has been replaced with a static image of Ubinas from Sept. 01.

    Innocent question: has this by any chance to do with the increased activity not meant to be seen by the public? Of course, it *could be* technical problems, but those have been sorted within a few days in the past. But I did notice earlier that I had missed events reported later, because the webcam was off.


    • Interesting. The only guys I know of who purposely did not report pre-eruption activity were the Spanish Government office in the Canaries. Cheers –


  3. [edited] Philippines: Mayon’s alert level has been raised a notch (from 0 to 1) because of an increase in activity since July this year. Main points are: GPS and tilt measurements show a continuous inflationary trend since July 2016; strongly increased amounts of SO₂; change of thermal well behaviour – some have decreased output while one has dried up completely. That makes it three Philippine volcanoes (Bulusan, Kanlaon & Mayon) being at alert level 1 (abnormal) or unrest.


  4. And this for Bruce: Great drone footage from a DJI Phantom 4 drone flown into the crater of Tavurvur Volcano, Rabaul (last erupted 2014) by an international team of volcanologists @pngvolc16. In collaboration with DCO, COMET, BGS and the Rabaul Volcano Observatory.

    Liked by 1 person

  5. Re SAKURAJIMA: A new paper is out today and doing the rounds on Twitter. From the abstract:

    Using the example of continued inflation at Aira caldera, Japan, we demonstrate that magma is accumulating faster than it can be erupted, and the current uplift is approaching the level inferred prior to the violent 1914 Plinian eruption. Magma storage conditions coincide with estimates for the caldera-forming reservoir ~29,000 years ago, and the inferred magma supply rate indicates a ~130-year timeframe to amass enough magma to feed a future 1914-sized eruption. These new inferences are important for eruption forecasting and risk mitigation, and have significant implications for the interpretations of volcanic deformation worldwide.



  6. Pingback: Recent Activity at Little Sitkin, Alaska |

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