17 comments on “Mt. LAMINGTON, 1951

  1. A great way to finish the year, Thank you Granyia ! Very interesting, you picked up the right place. I’ll read the report from Taylor.

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  2. Actually, my immediate thought was of El Chichon in Mexico, which followed a similar pattern -and unfortunately with similar catastrophic results – although without (yet) producing a dome.

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    • I’ve seen that. It is a hoot. Very good demonstration of something an old aero prof of mine said 45 years ago: If you have enough thrust, you can fly a barn door. They had enough thrusties. Really appreciated they used long poles to light it off. Impressed the parachute worked while the wheel was tumbling. Cheers –

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  3. Bogoslof a few hours ago: “Seismic data from nearby islands detected a volcanic signal from Bogoslof volcano starting at 21:18 AKST today (6:18 UTC Jan 4) lasting ~5 minutes and a series of lightning strikes were identified by the World Wide Lightning Location Network. An eruption cloud as high as 33,000 ft has been detected in satellite data. AVO is therefore raising the Aviation Color Code for Bogoslof to RED and Volcano Alert Level to Warning.”
    I wish there was a webcam on the main islands pointing in that direction, over-10km clouds should be visible from far.

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  4. Hi dfm, have fun with your raspishake! Where are you going to use it, at home and anytime, or are you going somewhere more seismically active? Let us know how it goes, will you? I don’t know about the technical side of it but it’s fascinating anyway!

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    • New research involving controlled explosions in a granite-dominated setting: What was that rumble? As seismic instruments become available for broader use globally, the question arises how to distinguish with certainty between the signatures of an earthquake and an underground explosion.

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  5. AVO have a busy time lowering and raising alert levels for Bogoslof. Having gone down to Orange at 11:47 AM AKST today they had to raise to Red again two hours later for indications of a “significant explosion”.

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    • They also lowered the alert level for Hudson back to green and mention a magnitude 3 quake in Descabezado Grande, only historical eruption followed the massive Cerro Azul eruption in 1932.

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  6. Hawaii: On December 31, nearly all of the 26-acre lava delta suddenly fell into the sea, along with more than four acres of older coastal cliff area, which included the former lava viewing site. This is an 11 minute live recording of a very interesting presentation of the lava delta collapse on new year’s eve at the Kamokuna ocean entry by Tina Neal, Scientist-in-Charge of the HVO.

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    • Lavaflows are built upon a base of unstable rubble, just like with Surtsey. I think that the unstable rubble is the root cause of Surtsey being heavily eroded by the waves of the North Atlantic.

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  7. Cayambe (Ecuador) continues to have anomalous seismic activity with many VT and some LP quakes (2-8km deep), flank deformation, persistent and strong smell of sulfur on the slopes and new cracks in the glacier near the top of the volcano. Due to the type of recorded EQs and their locations it is thought that the signs are of magmatic origin. A medium-term eruption (weeks to months) is possible but rather unlikely if there are no sudden changes. Cayambe has last erupted in 1785, but recent studies using tephrochronology have determined numerous eruptions in the last ~2000 years.

    In an overflight on 28/12/2016 no external activity could be seen, except for the glacier cracks that had been reported by climbers (IGEPN)

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