Thread by @ikluft

Heads up: Iceland has been monitoring #volcano unrest at #Reykjanes Peninsula. #Aviation color code orange due to quakes & indications of shallow magma dike. If an eruption occurs, ash hazard may affect North Atlantic air #travel. en.vedur.is/weather/aviati… #geology #weather

"Suspense in Iceland as dormant volcanic zone shows signs of life" by @physorg_com - volcanologists say a #Reykjanes eruption would likely be more lava than ash; not expecting repeat of 2010 Eyjafjallajokull #aviation #travel disruption phys.org/news/2021-03-s… #volcano #geology

"Sleeping Giant: Earthquakes And Volcanoes In #Reykjanes" by @rvkgrapevine - volcanologists describe how the peninsula's eruption history shapes expectations of possible volcanic activity to mostly lava flows, not explosions/ash grapevine.is/mag/feature/20… #Iceland #volcano #geology

Video by Fredrik Holm & Amy Clifton shows rockfalls during M5.4 #quake in #Iceland #Reykjanes peninsula. This spot is 1.5km E of quake center, 1km S (behind the ridge) from shallow magma dike under observation where a #volcano may emerge.
#geology

For those wondering where Fredrik Holm's video of the rockfall during Sunday #quake in #Iceland #Reykjanes peninsula was taken... I described location where I found it on Google StreetView (2013 imagery). Hwy 427 at 63.853, -22.298 goo.gl/maps/UQKnQUUc1… #geology #maps #mapgeek

Iceland's #Fagradalsfjal #volcano currently under observation for possible eruption is the site of the WWII crash of B-24 "Hot Stuff" where Gen Frank Andrews died. In his vacancy, Dwight Eisenhower was promoted Supreme Allied Commander.

https://twitter.com/gislio/status/1371852157704675336

#aviation #history

#Iceland #aviation color code goes red as the expected eruption in #Fagradalsfjall #volcano begins with a lava flow. Not being under a glacier, this is not expected to produce large volumes of ash like 2010 Eyjafjallajökull eruption. #Reykjanes #geology

The lava flow photo was posted by Icelandic Meteorological Office (IMO) @Vedurstofan but I didn't see an English tweet. Usually they post both. But understandably they're busy right now.

https://twitter.com/Vedurstofan/status/1373048364623888390

#Iceland #Fagradalsfjall #Reykjanes #volcano #geology

Even IMO's livestream webcam from the highway between capital city Reykjavik and the Keflavik Airport shows nighttime red lava-glow and occasional clouds of steam. #Iceland #Fagradalsfjall #Reykjanes #volcano #geology

Coast Guard helicopter video posted by #Iceland IMO shows fountains in initial lava flow in #Fagradalsfjall eruption.

https://twitter.com/Vedurstofan/status/1373058512553656321

#Reykjanes #volcano #geology

#Iceland IMO (@Vedurstofan) webcam approx 7.5mi/12km from the eruption shows the helicopter is either still or again up there getting more observations of #Fagradalsfjall eruption. #Reykjanes #volcano #geology

If you're interested in the #Fagradalsfjall eruption in #Iceland and have a @TiVo, you can add auto-record keywords (wish lists) for "Fagradalsfjall*" (the volcano) and "Reykjanes" (the region) to catch any programs or news that have those keywords. #Reykjanes #volcano #geology

Though the lava isn't threatening towns and the airport seems to be keeping airlines away from the eruption, it's making a red glow visible from the capital city Reykjavik. Photographers are having a field day.

https://twitter.com/rvkgrapevine/status/1373081286282215430

#Fagradalsfjall #Reykjanes #volcano #geology

I annotated the flight track of an A321 that arrived at #Keflavik Airport from Warsaw to show some passengers may have had a great view of the eruption on final approach. IMO said the lava was 1km² near the time. #aviation #travel #Fagradalsfjall #Reykjanes #volcano #geology

When asked if the #Fagradalsfjall eruption is related to any other Icelandic eruption you've heard of... No. Others were in elsewhere on the island. The last eruption at Reykjanes Peninsula was in 1340 during the Viking era.

https://twitter.com/ikluft/status/1373093949611503621

#Reykjanes #volcano #geology

"Volcano erupts near Iceland's capital Reykjavik" by @BBC - news media is starting to cover #Fagradalsfjall eruption in #Iceland now that there are photos and video bbc.com/news/world-eur… #Reykjanes #volcano #geology

Another great picture from aerial observation of the #Fagradalsfjall lava flow.

https://twitter.com/aslaugarna/status/1373102691937845256

#Iceland #Reykjanes #volcano #geology

A picture from Grindavik, about 11km/7mi SE of the #Iceland #Fagradalsfjall eruption, opposite direction from Reykjavik pictures. This view is clearer because the wind is blowing the volcanic steam/smoke away to the east.

https://twitter.com/VTLAB_Joel/status/1373098703242805251

#Reykjanes #volcano #geology

#Iceland IMO @Vedurstofan has lowered the #aviation color code from red back to orange after #Fagradalsfjall #volcano was confirmed not to be producing much ash, mainly lava as expected. It was red until confirmed.

https://twitter.com/Vedurstofan/status/1373216646769352711

#travel #Reykjanes #volcano #geology

#Iceland IMO @Vedurstofan posted a daytime picture of the lava flow at #Fagradalsfjall #volcano.

https://twitter.com/Vedurstofan/status/1373236776010194947

#Reykjanes #volcano #geology

Someone asked if there's been an increase in seismic activity around the world recently. No. The Internet just makes it easier to see news from around the world. Rate of tectonic plate movement remains the same.

https://twitter.com/ikluft/status/1373319406437068800

#Fagradalsfjall #Reykjanes #volcano #geology

Trivia: the mid-Atlantic Ridge, which goes through #Iceland's #Reykjanes Peninsula, spreads apart at 2.5cm/1in per year. A transatlantic flight in 2021 is 2.3m/7.8ft longer than it was for Charles Lindbergh in 1927. (NASA image) #aviation #travel #Fagradalsfjall #geology

#Iceland IMO moved their webcam from Borgarfjall to #Fagradalsfjall. So now you can watch helicopters come and go (screenshot below) and scientists walk up to the slow flow to take samples. ruv.is/frett/2021/03/… #Reykjanes #geology

Another helicopter... (near the top) The webcam shows continuous fountaining of lava at the #Fagradalsfjall eruption site. The eruption is in a depression cut off from flowing away (unless it fills up) by prior fissure eruptions. #aviation #Iceland #Reykjanes #volcano #geology

4 more helicopters... and I got 3 of them here. They're coming or going almost any time I look. And it's starting to rain. Plenty of stuff going on at the RUV/IMO webcam. ruv.is/frett/2021/03/… #aviation #Iceland #Reykjanes #volcano #geology

USGS posted a YouTube link to the same RUV/IMO webcam where you can watch the #Fagradalsfjall eruption as well as all the helicopter traffic.

https://twitter.com/USGSVolcanoes/status/1373336761481359361

#aviation #Iceland #Reykjanes #volcano #geology

I looked with concern where the helicopter on the lower left parked. If for any reason they couldn't start the engine, it's in a spot that could be overrun by the lava within a day. Fortunately it took off just fine. #aviation #Iceland #Fagradalsfjall #Reykjanes #volcano #geology

Volcanologist posts her experiences going to study the #Fagradalsfjall eruption in #Iceland on its first day.

https://twitter.com/EIlyinskaya/status/1373364778702364675

#Reykjanes #volcano #geology

"Amazing video of when the crater in Geldingadalur collapses" (translated title) by @visir_is #Iceland news - ground and #drone video of volcanologists at the eruption site on March 20 (#Fagradalsfjall eruption day 1) visir.is/k/79cdb585-dcc… #Reykjanes #volcano #geology

Video tour in English by @rvkgrapevine shows the scale of the #Fagradalsfjall eruption, at various vantage points including the flows and erupting vents. He warns potential visitors in #Iceland to gear up for a strenuous hike. #Reykjanes #volcano #geology

Day 2 of #Iceland #Fagradalsfjall eruption… the spot were I was concerned yesterday that a helicopter landed within a day's reach of lava, has been overrun by lava. It would have been a bad place for any mechanical issue. The helo air show continues. #Reykjanes #volcano #geology

Reminder: the source for those webcam images from the #Iceland #Fagradalsfjall eruption is @RUVfrettir's webcam. Other sources are rebroadcasting it. ruv.is/frett/2021/03/… #Reykjanes #volcano #geology

What a difference a day makes in #Fagradalsfjall eruption... and the eruption began 9pm Friday #Iceland local time (images from @RUVfrettir webcam) #Reykjanes #volcano #geology

Lava has nearly filled in the floor of the topographic depression at #Fagradalsfjall. Now nearing sunset in #Iceland on eruption day 2. #Reykjanes #volcano #geology

On the #Iceland RUV webcam at #Fagradalsfjall as it gets dark, I noticed people on the far slope as they turned on their lights. I'm not sure if that's scientists camping (flat areas are no longer safe), or a stream of people hiking back to Reykjavik. #Reykjanes #volcano #geology

#Iceland media @rvkgrapevine posted some fantastic pictures from the #Fagradalsfjall eruption site.

https://twitter.com/rvkgrapevine/status/1373720819852009475

#Reykjanes #volcano #geology

As nighttime descends at #Iceland #Fagradalsfjall, RUV webcam view reminds me of Mt Doom #volcano in the Lord of the Rings #LoTR...

Sam: Destroy it! Throw it in the fire!
Frodo: ...
Sam: What are you waiting for? Just let it go!
Frodo: The ring is mine. [disappears]
Sam: No!

Thread with pictures&video of #Iceland #Fagradalsfjall eruption by @DJCManns - British grad student studying #geology in Reykjavik shares his experience and excitement for the eruption 30km from campus. Thx for sharing with all of us!

https://twitter.com/DJCManns/status/1373755221806026753

#Reykjanes #volcano

Smaller crowds Monday morning on #Fagradalsfjall eruption Day 3: I don't see any people on the webcam but scientists must be there. No helicopters in low clouds & snowfall. Lava has filled the small valley floor. ruv.is/frett/2021/03/… #Iceland #Reykjanes #volcano #geology

Thread: Monday morning's lack-of-crowd follows overnight evacuation of #Fagradalsfjall eruption site for incoming #weather. Police assisted hundreds struggling to get back to cars in the dark as snow began to fall,

https://twitter.com/gislio/status/1373808591111647234

#Iceland #Reykjanes #volcano #geology

More snowfall at #Iceland #Fagradalsfjall eruption site with occasional whiteout conditions. Lava continues to flow from the spatter cone. Geldingadalir valley floor completely covered, but lava can't flow away unless it fills the depression. #weather #Reykjanes #volcano #geology

#Iceland RUV @RUVfrettir has set up their own YouTube feed of their #Fagradalsfjall webcam overlooking lava-filled Geldingadalir basin. It's their same webcam everyone else is rebroadcasting. #Reykjanes #volcano #geology

Time-lapse by #Iceland National Broadcasting Service RUV @RUVfrettir of the past day of lava flows at #Fagradalsfjall as Geldingadalir basin slowly filled in. ruv.is/frett/2021/03/… #Reykjanes #volcano #geology

Red glow 10 minutes after sunset under an overcast sky? Yup. Nice contrast. #Iceland #Fagradalsfjall #Reykjanes #volcano #geology

The @RUVfrettir webcam made a dozen painful alternations between color & infrared/night vision. We don't need night vision because IR was completely maxed out by the heat of the lava. Fortunately it stopped back in color. #Iceland #Fagradalsfjall #Reykjanes #volcano #geology