Results tagged “Antarctica”

Results of multiple and complementary lab analyses of minerals found in samples of material from Antarctica could give scientists a better understanding of the surface and subsurface environment of Mars, and indicate locations of potentially habitable subsurface locations, says a new paper by Planetary Science Institute Research Scientist Elizabeth C. Sklute.

Lake Untersee located in Eastern Antarctica, is a perennially ice-covered lake. At the bottom of its southern basin lies 20 m of anoxic, methane rich, stratified water, making it a good analog for Enceladus, a moon of Saturn.

Dale Andersen: "Merry Christmas to all from Cape Town, South Africa! My team and I returned from, Antarctica Thursday and are awaiting our next set of flights home on the 28th."

Far beneath the ice shelves of the Antarctic, there is more marine life than expected, finds a recent study in the journal Current Biology, published this week (20 December 2021).

Message from Dale Andersen on 4 Dec 2021 at 4:23 am ET "I'm starting my trip. Follow along at my MapShare site! Heading to lakeObersee for the day." Update a4 4 Dec 2021 at 9:47 am ET: 'Back "home" '

Hi Keith, All is well here at Lake Untersee in the mountains of Queen Maud Land, Antarctica. Our traverse from the ice-runway at Novolazarevskaya Station went well with good weather and visibility, and the new BRP Lynx Commander snowmobiles we used performed remarkably well and were very fuel efficient - which is very important to us during our 6 hour, 125 km ride inland.

12 Nov 2021 2:18 PM ET "We had a great ride to Untersee. Our BRP Lynx Commanders worked well as did the clothing they provided. We have the first tent set up now, time to eat!"

Dale Andersen sent this message from: Lat -70.822581 Lon 11.647224: "Will head to Novo Station later this morning by truck and snowmobile to pick up my dive hole melter and will give it an operational check later today."

Winds have picked up and visibility has dropped to under a half a kilometer. White out conditions will likely continue through tomorrow.

We had our first full day here at the ice-runway at Novo Station. We spent most of the day getting several of our snowmobiles working and that have been in cold storage since we last used them in 2019 and assembling and organizing cargo we brought down with us on the flight.

Dale Andersen reports that he has arrived via na IL-76TD-90VD aircraft at Novolazarevskaya Station aka "Novo". After this year's gear is collected and stowed the traverse to Untersee Oasis will begin.

Dale Andersen: While at Untersee Oasis, we will continue our studies of Lake Untersee and it's stunningly beautiful and interesting ecosystem. This year we will again be diving beneath its thick, 3.5 m perennial ice-cover to make observations and collect samples to depths of ~30 m.

Pioneering research has revealed the erosion of ancient sediments found deep beneath Antarctic ice could be a vital and previously unknown source of nutrients and energy for abundant microbial life.

Lakes underneath the Antarctic ice sheet could be more hospitable than previously thought, allowing them to host more microbial life.

Far underneath the ice shelves of the Antarctic, there's more life than expected, finds a recent study in the journal Frontiers in Marine Science, published this week (15 February 2021).

UNSW Science Professor Rick Cavicchioli is an expert in microbes and why they are so important - just last year, he led an urgent call for the world to stop ignoring this 'unseen majority' in Earth's biodiversity and ecosystem when addressing climate change.

Perennially ice-covered lakes that host benthic microbial ecosystems are present in many regions of Antarctica. Lake Untersee is an ultra-oligotrophic lake that is substantially different from any other lakes on the continent as it does not develop a seasonal moat and therefore shares similarities to sub-glacial lakes where they are sealed to the atmosphere.

The discovery of the first active methane seep in Antarctica is providing scientists new understanding of the methane cycle and the role methane found in this region may play in warming the planet.

More than half of the planet's fresh water is in Antarctica. While most of it is frozen in the ice sheets, underneath the ice pools and streams of water flow into one another and into the Southern Ocean surrounding the continent.

Last night our weather shifted from sunny skies to low-cloud, light snow and light but gusty winds, our highest gust today being about 30 knots. The forecast is for more of the same so we must be prepared tonight for high winds that could descend upon us at most any time.

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