StoneRoad2013's photos with the keyword: volcano

Unusually for an Icelandic volcano, Eyjafjallajokull's April 2010 eruption produced significant amounts of ash, and at high altitudes. As the dispersion forecast shows, the ash affected a good deal of European air space, grounding a good many flights to protect jet engines. There has been some debate whether this was really necessary ... [Dense ash clouds will adversely affect aeroplanes, including badly damaging turbines, cf Speedbird 9, which lost all four engines ... en.wikipedia.org/wiki/British_Airways_Flight_009 ] not my image : fair use & public information

The very large shield volcano on Mars, probably extinct. en.wikipedia.org/wiki/Olympus_Mons . not my image : fair use & public information

If the mega-volcano under Yellowstone National Park ever has the massive eruption that has been predicted, the devastation would be exceptional over North America. Zone 6 *might* have some survivors if they were able to take adequate shelter, and one with suitable resources. There would be serious and significant affects worldwide. The amount of volcanic ash & dust - and smoke from "forest" fires - plus other debris that enters the atmosphere would block / reflect sufficient sunlight to significantly drop global temperatures creating what would probably be a short "mini-ice-age" [what is sometimes termed a "nuclear winter"]. I expect it would be an extinction-level climate event. Mankind would probably survive on other continents but civilisation would, most likely, be knocked back several centuries and world-wide famine would be a likely outcome. Not a pleasant prospect, but slightly less devastating than a decent meteor impact. . not my image : fair use & public information

Olympus Mons is a huge shield volcano on Mars, probably the highest known mountain in the whole Solar System. Last eruption thought to have been 25 million years ago. NOT MY IMAGE : fair use & education Original image from ESA Mars Explorer mission en.wikipedia.org/wiki/Olympus_Mons

The Northern Lights are seen above the ash plume of Iceland's Eyjafjallajokull volcano in the evening in this April 22, 2010 photo. not my image : fair use & public education en.wikipedia.org/wiki/Aurora en.wikipedia.org/wiki/Eyjafjallaj%C3%B6kull#2010_eruptions

With a little imagination, this field of pillow lava [or more accurately "pahoehoe" - en.wikipedia.org/wiki/Lava#P%C4%81hoehoe ] could be interpreted as bodies surrounding the gateway to hell ... actually, that's an opening in a lava tube. . not my image : fair use & public education

Etna blowing smoke rings - these vortex rings are quite rare, so catching one so well is quite an achievement. Wiki info :- en.wikipedia.org/wiki/Mount_Etna#Vortex_rings Smoke Vortex ring above Mount Etna observed on 9 August 2023 from the cable car starting point in Nicolosi, at Rifugio Sapienza [by PSomol (username)] Not My Image : Fair Use & public education

Eruption plume from Tonga's Hunga-Tonga Hunga-Ha'apai volcano on 15th January 2022. This, and an accompanying tsunami was the culmination of an eruption that started around the 20th December 2021. The tip of the plume was estimated to have reached 55km in altitude and ash was widely distributed over the southern Pacific Ocean. NASA estimated the blast as about 10 Megatons of TNT ... wiki : en.wikipedia.org/wiki/2022_Hunga_Tonga%E2%80%93Hunga_Ha%CA%BBapai_eruption_and_tsunami#December_2021 . www.bbc.co.uk/news/science-environment-60088413 Not my Image : fair use & public information

small image of Eyjafjallajokull [Iceland] in eruption, with the lack of visible ash in the column, I suspect this was from the early part of the eruption - perhaps in March 2020. Not my Image : fair use & public information wiki : en.wikipedia.org/wiki/2010_eruptions_of_Eyjafjallaj%C3%B6kull

Sentinel's Infra-red view [false colour image] of Nar and the lava flows in Geldingadalir. Meradalir and Natthagi on Saturday 26th June 2021. The brighter the colour the warmer the area (with white the hottest, then yellow and red, with black the coolest - background in grey). The two round dots roughly to the east of Nar (the main vent) are small lava lakes. Not my image : Fair Use & educational purposes

Aerial view of "Nar" and the erupted lava fields surrounding the vents & fissures that started erupting on 19th march 2021. (FLO is to the left and BOB to the right, Meradalir is the valley on the far side of "Nar", much of the recent lava has ended up in Natthagi (off screen to the right). Not my Image ; Fair Use & educational purposes.

Webcam still screengrab from 1st June 2021 at 1240, showing the older, blocky aa lava (black) against the newer, still grey shaded, ropey pahoehoe flows. e2a - in the almost four weeks since this image was captured, Nar has continued to pour lava into Meradalir - estimated to be 1/3 to 1/2 of the total lava output - this further lava has flowed into the cross valley visible to the left. A marker for the depth is the break of slope just above the change in lava colour at the entrance to the cross valley. As of 26th June, that break of slope is starting to be submerged. Not my Image ; Fair Use & public information

Webcam still screengrab [looking SSW at 02:20 on 1st June 2021] showing surface and tunneled lava flows arriving in Meradalir and extending the eastwards spread. The newest flows are the lighest grey, and have largely covered previous outpourings, including the much smaller valley bottom fields that were mostly from the FLO system vents. Not my Image ; Fair Use & public information

The layout / names of the vents visible on 17th May 2021. Nar, (half of system 5) is the only active vent.

Photo annotated with the unofficial vent names, as at 13th April 2021. Extra details are in the album commentary. Not my image : Fair use & public information

Lava from volcano vents "BoB" are continuing to flow into Geldingadalir. The lava from the new vents to the north-east, especially that from No.2 ie "FLO" , are descending into Meradalir. [as at 13th April 2021] Not my image : Fair Use & educational purposes.

The eastern berm had been overtopped by lava, which is now flowing into Natthagi. The purple colour shows the extent of the lava as at approx 1630 on 22nd May 2021 [The actual route has two kinks in it that are not shown correctly on the map]. The western - higher and thicker - berm has not been breached. Lava continues to flow into Geldingadalir and Meradalir (as of 2nd June 2021) as well as into Natthagi. Not my image ; fair use & educational purposes.

The red areas show the zones where the vegetation (moss, lichens, some grass etc) has been burnt. The fires were started by vent ejecta [lava bombs and the like] or by direct exposure to lava flows. Situation as at 28th May 2021 (approx). {some other features are explained by notes} Not my Image : fair use & educational purposes