Mini Ice Age? (Page 57) Sir Loin: I was helping my son with a highschool project on natural hazards when we discovered clear evidence of a previously unknown submarine volcano. A large lump of limestone tightly wrapped in a layer of basalt. So no Kitty, the navy hasn't discovered them all. Some parts of the world are still too wild and rough to tempt them for exploration, even if the fishing is great 😀 Sir Loin: Dunc, I've been following news of that iceburg recently. These huge burgs break off periodically, one drifted up past NZ a few years ago, its time another large one broke off the Ross Ice Shelf now to enable the Adele penguins to reach the coast from their nesting grounds.  kittybobo34: I think we should put some sails on that ice berg, and float it to some needy desert country  duncan124: Etna keeps the beat. About every two days another powerful lava fountaining episode. "....Very weak and intermittent strombolian activity restarted at the crater probably during the afternoon or early evening yesterday. At around 22:56, this activity began to increase quickly, along with a sharp increase of volcanic tremor to high values. By 23:45 had reached the stage of continuous, tall lava fountains rising several hundred meters. The eruption column produced an ash plume that rose to approx. 6000 m above sea level. The peak phase occurred around midnight and lasted until about 00:20, when activity - as usual - dropped sharply and more or less ceased." Volcanodiscovery. duncan124: ...and then another powerful lava fountaining episode just 40 hours since the previous one. https://volcanodiscovery.de/uploads/pics/etna16june21.jpg So the 48 hour rhythm goes on with just minor adjustments. This seems to be very much connected to the oceans. But will Mt Etna produce the weather altering sky darkening clouds? Or is it now just a side show to this extremely hot weather we are experiencing?? duncan124: Spaceweather.com keeps reporting the spread of this years Noctilucent clouds now as far south as Spain. These have of course coincided with grey skys over the UK just as they did last year. duncan124: ".... at intervals of approx. 36-48 hours, with little to no activity in the times between. The latest ones happened Saturday evening (19 June 2021) between 20:45-21:30 local time and this night between around midnight to 1:45 am this morning. In both cases, strombolian activity started to reappear about an hour before the lava fountaining phase, then quickly intensified to merge into fountains, which abruptly ceased after reaching their peak phase with heights of several hundred meters. " Volcanodiscovery. A stage for drama with the volcano quiet then suddenly within an hour there are small earth movements and then fountains of lava hundreds of meters high. duncan124: "...Only about 24 hours since the last one, yet another paroxysm occurred at the New SE crater in the early hours today, marking it the 42th or so event this year alone. As during the previous ones,.... ....the eruption column rose to more than 9 km height above sea level, according to the volcano observatory. Ash and lapilli fall occurred the eastern sector around Milo and Giarre towns." Volcanodiscovery Would a more prolonged eruption change the weather?? kittybobo34: It might Duncan, they have cooled the summers in past events, once even canceling a summer. duncan124: I saw the Noctilucent clouds today at about 11pm near Southwold on the east coast of the UK. duncan124: "...Etna is accelerating its rhythm of intermittent strong eruptions: Only about 16 hours since last evening's paroxysm, another similar event occurred today around noon:... ...The lava fountains reached 400-500 m height and produced an eruption column that rose to 9-10 km above sea level, again drifting towards the ESE where heavy ash and lapilli fall occurred, in particular in the town of Linguaglossa. The paroxysm lasted approx. one hour and activity rapidly decreased around 1 pm " Volcanodiscovery duncan124: "Lava fountains at clockwork rhythm....The amazingly regular series of paroxysms from the New SE crater at very regular intervals of approx. 20-30 hours continues with no signs of ending soon. Since the last update, two more....eruption plume that rose to approx. 6.5 km altitude." Volcanodiscovery. Sir Loin: Any sign of activity at Yellowstone? It's been 620,000 years since the supervolcano blew its top last and it seems to have a 600k cycle so a bit overdue kittybobo34: Last I heard the hot spot is moving upward slowly. The lake has shifted a little. There was talk of installing a Geothermal power plant to drain off some of the excess heat, but also fear that what every they do might quicken the process. duncan124: " Four and a half days of quiet...." as the clockwork rhythm of paroxysms takes a halt until.... I guess a little bit bigger but much the same as before. Good or bad?? Regular but smaller or one big one to get it over with?? Has Etna or Fagradalsfjall already made June and July colder?? duncan124: Ash venting at Fagradalsfjall , " What caused this change is not completely clear, but one likely scenario is that the magma column dropped temporarily and caused internal collapses in the emptied parts of conduits. " The change is to splashing types of paroxysms, but how much gas and fine dust is being vented and can nature manage small amounts ?? Is the harvest already in the bag for this year and it just wouldn't matter now anyway??? duncan124: Nullschool shows a distinct cloud of Carbon Monoxide Surface concentration and Sodium Dioxide Surface mass over the Reykjanes Peninsula but that doesn't seem to mean it is coming from this new eruption. kittybobo34: Some of the variations are caused by the amount of sea water trapped in subsiding rock formations. That steam has a lot of force to it. duncan124: I think that would be the Carbon Monoxide, if you meant the water reacting with the newer rocks near the magna. duncan124: " During last night (8-9 July 2021), yet another paroxysm (lava fountaining episode) occurred from the New SE crater, after an interval of less than 48 hours.... The sequence of events was almost identical to the previous events, but this time, the eruption seems to have been significantly stronger as it produced a tall eruptive column that rose to estimated 11 km altitude. ..... sustained tall lava fountains by 22:45, lasting for about 2 hours until 00:45 this morning. Heavy lapilli and ash fall occurred on the southern and eastern sectors of Etna, including Zafferana Etnea, Fleri, Pedara and Cannizzaro." Volcanodiscovery A tall eruptive column that rose to estimated 11 km altitude must have some impact on the weather. duncan124: "Powerful lava fountain episode Wednesday noon sends ash to Calabria.... Following 5 and a half day of quiet, the New SE crater produced yet another paroxysm, and one of the most powerful ones in the current series, perhaps as a result of the longer-then-usual interval that had passed since the previous episode Thursday evening last week ...around 1 pm, lasted for approx. one hour and half. During the peak phase from 1.40-2.20 pm, the lava fountains reached 600-1000 m in height and produced a thick eruption column that rose to more than 9000 m above sea level, which drifted NE, causing lapilli and ash fall as far as Taormina and Reggio Calabria. " Volcanodiscovery The weather remains unusually wet and cloudy with overall grey skys. Sir Loin: Volcanoes in NZ (Ruapehu, Tongariro) starting to misbehave a little too Dunc. Crater lake on Ruapehu has risen +20C in the last few months and is spilling over into the Wangaehu River which has caused quite a few deaths in the past with flash floods created by lahars. Some small earthquakes in the vicinity too. duncan124: Volcanoes fall silent, Etna has made no reports since Wednesday, above, the clouds finally clear and the temperatures rocket towards the blue sky. All simple stuff. Or is it??? The dust and ash clouded the skys or the oceans made the rain and the volcanoes to erupt?? Maybe all the way to the NZ volcanoes too? duncan124: Six days later,... https://volcanodiscovery.de/uploads/pics/etna20jul21-comb.jpg "The activity continued to increase very gradually over night and picked up quickly in the early morning after around 4:20 am, reaching lava fountaining by around 8 am. The peak of the eruption occurred during 9-10 am, when tall lava fountains of 500-1000 m height produced an impressive eruption column that reached approx. 10 km altitude, producing a dense plume drifting into southeasterly direction. As usual, activity stopped abruptly around 10:30" Volcanodiscovery Is Etna set to become a weekly? | Science Chat Room 3 People Chatting Similar Conversations |