#ice-core — Public Fediverse posts

Researchers extract a 2.8-kilometre-deep Antarctic ice core, providing a continuous climate record stretching back 1.2 million years

Researchers have extracted a 2.8-kilometre-deep ice core providing an uninterrupted record of Earth's atmospheric conditions stretching back 1.2 million years.

https://newsnews.ai/article/antarctic-ice-core-longest-climate-record

#Antarctica #ClimateChange #IceCore

The 3,000-Year #CoralReef #Shutdown That Left #Scientists Puzzled : Medium

#IceCore reveals low #CO2 during warm spell 3 million years ago : New Sci

Pace of #GlobalWarming has nearly doubled since 2015, reveals #Study : Misc

Latest #KnowledgeLinks

https://knowledgezone.co.in/resources/bookmarks

Back at Basen*

LISA is alive! Kind of. We had a really good field test of the system in this, our first week in Antarctica (though thank goodness for satellite wifi connection** to the rest of the world so LISA’s genius creator Helle Kjær could assist in troubleshooting). It was a bit of a struggle and I would say we came out partial winners, with a much deeper understanding of how the box is actually put together and more importantly some really interesting data (yay!) that Clement is busy processing already – I’m very excited to see how it turns out as it will help to direct our following field sorties.

This is the first field deployment of LISA in Antarctica, and even if she didn’t give up all the secrets of the snow, it’s still an achievement worth celebrating that we got half of it, and an interesting half too.

We chose a coring site around 60km from Wasa, so it was a long slow snow-scooter tour up Plogbreen (the plough glacier – named after our neighbouring nunatak Plogen, the plough) and on to the flat plateau of Ritscher Flya at about 1000m elevation.

It was a pretty wind and snowy site, in a katabatic wind zone (thankfully not too strong on this trip), which was intentional, as one of the aims of our study is the effects of strong winds on snow accumulation. As preparing to leave took most of the day (especially doing the chemistry mixes for LISA), we headed up in the afternoon and then stayed out overnight in these fantastic little cabins on skis.

The Polar Research institute in Sweden calls them arks and they are really a very nice solution to the problem of cold and wind and trying to work in quite extreme conditions. Pulled by a snow-scooter and with a stove inside for melting snow and heating, they’re really very cosy to sleep in and it makes a big difference to be able to warm up when for example you’ve been sitting in a snow pit at -15C with a hefty wind chill on top and are covered in spin drift snow (as me how I know).

We were greeted by this beautiful halo around the sun upon waking, with sun dogs on either side, caused by the ice crystals in the sky. In fact we nick-named the site diamond dust because of the clear sky precipitation on the first morning.

We soon got into a good rhythm with Henrik driving the coring, Clement logging and Ninis and myself assisting with the cores.

And then it was time to get LISA going and a very long and slightly frustrating day followed. Thankfully, by bedtime and having reconstructed quite a lot of the inner tubing of the box, we got LISA ready for work the next day.

I dug a snow pit – always one of my favourite activities, it’s good to get your hands in the snow and really feel what is going on, and we identified some really intriguing layers. Lots more work to be done there to work out what is going on.

As added entertainment, Ninis was interviewed live from the top of the ice sheet by Swedish TV live from the fieldcamp (check out God Morgon Sverige on TV4, 23rd December if you’re interested). However, after 2 nights out it was time to pack up and head back, 3 cores worth of data richer, for a shower, laundry and a Christmas Eve day off.

On Christmas eve daytime it was my turn with a brief 2 minutes to explain our project on Danish TV2 news (at 12.15 CET in case you have an account and would like to see me looking wind swept). Juleaften, Christmas Eve, is the big day of celebration in the Nordic countries, so we took an almost day off, doing some washing, cleaning the living modules and enjoying plenty of good food courtesy of the Swedish chef Raymond who prepared a Christmas dinner feast later, perfect after a long Christmas hike over the nunatak.

Field Photos

Given the current state of the US administration I think it’s worth thinking about what services we use, to become less dependent on US tech and social media companies. Therefore, I’m sharing photos over on pixelfed while we’re going, in case you want to see more field photos, though sharing is a bit intermittent as it depends on the internet link and due to the expense of the data, we’re trying not to use too much.

*The Swedish research station Wasa is located on a nunatak in Antarctica called Basen (it’s pronounced Baasen, like the sound a sheep makes in english)

**Yes we are on starlink. It’s incredibly impressive performance wise, but I’d rather not be supporting the nazi man-child, the sooner Eutel Oneweb makes an alternative for users like us, the better, though preferably without this polluting a footprint in low earth orbit. In fact if any EUTEL folks are reading this, I’d be delighted to test out a lightweight system for polar field scientists for you 🙂

#Antarctica #climate #climateChange #fieldWork #ice #iceCore #iQ2300 #polarScience #Science

Eisbohrkern aus Mont-Blanc-Massiv enthält intaktes Klimaarchiv der vergangenen 12.000 Jahre – Gletschereis aus den französischen Alpen gibt Aufschluss über klimatische Veränderungen
https://www.uni-heidelberg.de/de/newsroom/eisbohrkern-aus-mont-blanc-massiv-enthaelt-intaktes-klimaarchiv-der-vergangenen-12000-jahre
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Ice Core from Mont Blanc Massif Holds Intact Climate Archive from the Last 12,000 Years – Glacial ice from the French Alps provides information on climatic changes
https://www.uni-heidelberg.de/en/newsroom/ice-core-from-mont-blanc-massif-holds-intact-climate-archive-from-the-last-12000-years

#universität #heidelberg #uniheidelberg #klima #holozän #eisbohrkern #climate #holocene #icecore

Incredibly cool! 💙❄️ I love seeing these kinds of in-situ analysis tools put to work in harsh environments. #science #Antarctica #cold #extremophilia #Greenland #frozen #snow #expedition #antarctic #extremeenvironments #prototype #icecore #fieldscience #arctic #polar #fieldstudies #fieldsampling

RE: https://bsky.app/profile/did:plc:npmoerrzaqzrlpvu3yu6i4pi/post/3m22tccsrrk2m

A volcano or a meteorite? New evidence sheds light on puzzling discovery in Greenland’s ice sheet
#Greenland #Iceland #Volcano #Meteorite #ClimateChange #EarthHistory #IceCore #YoungerDryas #Geology #Earth #Volcanology #SpaceVsEarth #IceCores #Comets
https://the-14.com/a-volcano-or-a-meteorite-new-evidence-sheds-light-on-puzzling-discovery-in-greenlands-ice-sheet/

Sustained Decrease In Inland East Antarctic Surface Mass Balance Between 2005 And 2020
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https://doi.org/10.1038/s41561-025-01699-z <-- shared paper
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#GIS #spatial #mapping #Antarctic #EastAntarctic #icesheet #massbalance #spatialanalysis #model #modeling #spatiotemporal #water #climate #climatedynamics #monitoring #remotesensing #earthobservation #icecore #snowpit #wind #melting #water #ice #science #cryology #snow #weather #watervapour #climatemodel

Volcanic Eruptions Linked To Neolithic 'Sun Stone' Sacrifices In Denmark
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https://phys.org/news/2025-01-volcanic-eruptions-linked-neolithic-sun.html <-- shared technical article
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https://dx.doi.org/10.15184/aqy.2024.217 <-- shared paper
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#archaeology #excavation #neolithic #sunstone #denmark #island #Bornholm #sacrificed #sun #field #agriculture #volcanic #eruption #model #modeling #humanimpacts #weather #climate #volcaniceruption #ash #sulfur #atmosphere #stratosphere #farming #agriculture #crop #cropyields #failed #harvest #foodsecurity #famine #disease #prehistory #icecore #reconstruction #Vasagård #Vasagard #ritual #spiritual #reconstruction #spatiotemporal

In an ocean of bad news, here's some science excitement - the beyond EPICA team has announced they've drilled an ice core dating continuosly to 1.2 million years ago!! This core will give key information about the transition to the 100-000 year earth - the cycle of glacials and interglacials in which we currently live. So cool (pun intended).

#Antarctica #paleoclimate #IceIceBaby #IceCore #ClimateScience

https://www.awi.de/ueber-uns/service/presse/presse-detailansicht/mehr-als-12-millionen-jahre-altes-eis-erbohrt.html

‘Mystery Volcano’ That Erupted And Cooled Earth In 1831 Has Finally Been Identified
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https://www.accuweather.com/en/weather-news/mystery-volcano-that-erupted-and-cooled-earth-in-1831-has-finally-been-identified/1729581 <--shared technical article
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https://doi.org/10.1073/pnas.2416699122 <--shared paper
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#GIS #spatial #mapping #glaciochemical #geochemistry #climate #climatechange #sulfurdioxide #neversummer #temperature #weather #icecore #LittleIceAge #dating #model #modeling #spatialanalysis #historic #volcanic #eruption #stratigraphy #Zavaritskii #caldera #ash #KurilIslands #Japan #Kamchatka #Russia #volcano #stratospheric #cryptotephra #tephra #andesite #dacite #Simushir #SimushirIsland

Jesse Harlin has their first DriveThuRPG credit with an #icecore TTRPG. The quickstart is out now and free to download while the core Arrhenius rules are expected in 2025. https://www.geeknative.com/170240/free-to-download-arrhenius-quickstart-guide/?utm_source=mastodon&utm_medium=social&utm_campaign=fedica-GNBlogWave1

Waiting for the handyman.
Reading a paper on analyzing firn in Antarctica. Firn is the snow layer before it gets compacted to actual ice. The firn layer contains gas like methane or CO2, too, but the air bubbles aren't strictly sorted on input date 😁 The bubbles can be older or younger than their immediate surrounding. (True for real ice layers, too.)

All very interesting.
https://tc.copernicus.org/articles/13/3383/2019/tc-13-3383-2019.html
"Multi-tracer study of gas trapping in an East Antarctic ice core" by Kevin #Fourteau et al 2019.

The absolute shocking byproduct of their incredibly thorough work is a 2700 year data series for CH4 in MONTHLY resolution!! https://doi.pangaea.de/10.1594/PANGAEA.909627?format=html#download

From -930 to 1774 AD.
Their gas dating method is so exact that they pinpoint several different days for every month, too.

I am stunned that monthly resolution is possible. And this was merely a byproduct of figuring out the best way to analyze firn.

#paleoclimate #methane #CH4 #firn #icecore #ice #snow #Antarctica

My ace colleague from Copenhagen University, and PI on #PRECISE Christine Hvidberg presenting some new insights from GPS at the #IceCore sites on #GreenlandIceSheet dynamics at #IGSnorthumbria2024

🥶 Who needs a natural, super cold freezer at -54C/-65°F?

Ice core scientists like INSTAARite Tyler Jones! They are working to preserve #IceCore records for the future. One option is a remote cave in Antarctica being used as an ice sanctuary 🧊 https://grist.org/looking-forward/meet-the-scientists-behind-the-ice-sanctuary-a-memory-vault-for-dying-glaciers/

🥵 Feeling the summer heat? Visit the world's largest archive of ancient ice 🧊 & drill into #IceCore science via H2O Radio's 6-minute audio story about the NSF Ice Core Facility. INSTAARite (& stable isotope guru) Bruce Vaughn is a featured guest.

🔊Listen at https://h2oradio.org/this-week-in-water/frozen-assetsthe-race-against-time-to-protect-priceless-artifacts

<grumble> why can't I find a high resolution record for #CO2 or CH4 from Greenland #icecore ? I mean, really... ~200 year resolution in the #Holocene is just not good enough. And output from a model (Kleinen) is not what I want. I want a Koehler-2017-equivalent for #Greenland ! #Followerpower

Does #Europe know just how awesome the #BeyondEPICA project is?
Drilling an *ancient* #iceCore in a very remote and very cold part of #Antarctica...
Good overview talk here at #ESSI

Interrupted holidays to give a quick talk at UTAS today, got an ice core lab tour in exchange! Worth it.

#antarctica #iceCore #palaeo #tassie #holidays

Had not realised this one was out.

A new #IceCore is planned at #MullerIceCap on #AxelHeibergIsland and @agrinsted & Ann-Sophie Zinck have tried to estimate the thickness of the #IceCap, partly using our #HIRHAM5 simulations...

Will be interesting to see how close they are!
https://tc.copernicus.org/articles/16/1399/2022/

Writing up field notes, downloading data and backing up photos today. I've taken 790 photos and video over the last 12 days. 😮
And probably collected enough data to keep me going for 2 years or so.

We're lucky to be working with local hunters, they are exceptionally helpful and do a lot of the practical on #ice work with us.

Also a whole bunch of new ideas to sort through and think about for next year.

#Greenland #Fieldwork #Fieldphoto #SeaIce #IceCore #Snow

Stay safe down there!

#Antarctica #millionYearIceCore
#millionYear #IceCore #millionYearCore #coreSample #coreSamples #iceCoreSample #iceCoreSamples

#LivingTraverse #caravan #SoCold #stayWarm #ice #oldestIce

#science #research #scientificResearch #researcher #Antarctic #researchers #AntarcticResearch #AntarcticResearcher #AntarcticResearchers #study #samples #takeSamples #takingSamples #HistoryOfTheEarth #IceAges #warmPeriods #ClimateChange

https://www.antarctica.gov.au/news/2022/million-year-milestone-traverse-sets-course-toward-the-oldest-ice/

Fascinating talk from J P Steffensen of #nielsBohrInstitute on the ravages that a 2 year #COVID19 gap in visits to #EGRIPcamp.

The #icecore science trenches needed completely reconstructing, it took 2.mobths to dig out the camp, all done by hand!
Amazingly they even managed to start taking #EGRIP ice core again...
#DKviden #GreenlandIceSheet

It's interesting because changes far inland at the #EGRIP #IceCore site have also been observed as @agrinsted published earlier this year, but here they consider them to be sign of #IceMaterial properties rather increased melting
https://fediscience.org/@agrinsted/109316060071666685