New Map Of Landscape Beneath Antarctica Unveiled
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https://phys.org/news/2025-03-landscape-beneath-antarctica-unveiled.html <-- shared technical article
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https://doi.org/10.1038/s41597-025-04672-y <-- shared paper
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#GIS #spatial #mapping #Bedmap3 #icebed #surface #thickness #gridded #datasets #Antarctica #raster #model #modeling #landscape #elevation #icesheet #survey #remotesensing #earthobservation #climatechange #warming #climate #melt #melting #seafloor #subglacial #geophysical #survey #topography #geology #bathymetry #topobathy #BritishAntarcticSurvey
@BritishAntarcticSurvey

Subglacial Microbial Life on Earth and Beyond https://asm.org/Articles/2024/February/Subglacial-Microbial-Life-on-Earth-and-Beyond

"Jill Mikucki, Ph.D. studies one such analog site: Blood Falls in the McMurdo #DryValleys of #Antarctica. There, a briny, #subglacial #groundwater #ecosystem leaks iron-containing #brine to the surface... Mikucki has been working on subglacial environments for over 2 decades but is still stunned by some of her team's discoveries... the #microbial cells grow very slowly under the ice, possibly taking a year or more to divide."

Publication claxon

Led by former student in my lab @raventurelli@twitter.com and other collaborators (on that other site), we find layered lake #sediment! So, what? That's been done before, you say?

Well, this lake was under 1100 m of Antarctic ice and had never been accessed by humans before we cleanly (no #microbial contamination, and no easy feat!) accessed it! These sediments give us an idea of how long #Antarctic #subglacial #lakes exist.

https://beta.nsf.gov/news/first-ever-layered-lake-sediment-sample-extracted