Katharina Hochmuth

Antarctica – a continent dedicated to science Sarah Ferguson presents Australia's premier daily current affairs program, delivering agenda-setting public affairs journalism and interviews that hold the powerful to account. Plus political analysis...

“A lot of nations are sort of going backwards just at a time when we really need to advance our understanding of Antarctica.”

- @deformedearth.bsky.social on Antarctic research publication trends, on the ABC’s 7:30 ⬇️

@utas.edu.au
@antarctic.bsky.social

www.abc.net.au/news/2025-08...

@antarctic.bsky.social
@antarcticsciaus.bsky.social
@arcsaef.bsky.social
@imas-utas.bsky.social
@utas.edu.au

Sunset on the RSV Nuyina offshore the Denman Glacier

Pancake Ice

Rock samples with googley eyes

Join the Denman Glacier geology 🪨🌋⛏️ team for an evening at the pub this Tuesday!
We will be bringing our rocks from Antarctica, the venue has the drinks, all that is missing are your questions! #Beakerstreet 🧪❄️🌊
more information:
tickets.beakerstreet.com.au/Events/SCIEN...

Antarctic research jeopardised by 'terminating' funding, scientists say Australia's ability to conduct strategic, in-depth, and long-term research in Antarctica is being compromised by "terminating" funding models for key programs, scientists warn.

"That is a crisis in terms of our ability as a nation to do the work we need to do to inform the policymakers, but also just to show that we take Antarctica seriously."

- Director @deformedearth.bsky.social on the approaching funding cliff for #Antarctic research ⬇️

www.abc.net.au/news/2025-06...

YouTube video by ACEAS Revealed in the Rocks: the Heat Below

"The rocks that the glacier sits on impact the way it behaves, the heat that’s coming through the crust impacts the way that glacier behaves."

WATCH: Professor Jo Whittaker (IMAS) and Dr Karin Orth (UTAS) on what the Denman region's ancient rocks can tell us ⬇️ #DMV

www.youtube.com/watch?v=mn4Q...

The best part about our icy research is sharing it!
Our calls with schools were certainly a highlight of the Denman Marine Voyage!
🧊🧪⚒️🪨🚢

Onset of strong Iceland-Scotland overflow water 3.6 million years ago - Nature Communications This study examines the history of North Atlantic deep-water masses, as recorded in marine sediments. Major lithological changes and increased rate of deposition reveal that stronger deep-ocean circul...

Very proud of my #IODP shipmates for spearheading this amazing paper on our new data from #Exp395.
We are looking at the onset of deepwater formation in the North Atlantic and its relation to Greenland‘s ice sheet.
⚒️🧪⛰️🪨🚢🧊
www.nature.com/articles/s41...

Ancient ocean sediments link changes in currents to cooling of Northern Hemisphere 3.6 million years ago

@natcomms.nature.com paper contribution from @imas-utas.bsky.social @hochmuth.bsky.social (physical parameters of sediments), part of an international research team ⬇️

www.tcd.ie/news_events/...

From East Antarctica to the world: outreach program goes global - ACEAS From East Antarctica to the world: outreach program goes global A young, talented and diverse group of Antarctic researchers working in the field alongside some of the sector’s research veterans was a...

From East Antarctica to the world: @antarcticsciaus.bsky.social outreach program goes global

Celebrating the power of connection through science on the Denman Marine Voyage 🌏 #DMV

AAD | @antarctic.bsky.social | @arcsaef.bsky.social

antarctic.org.au/from-east-an...

Antarctica has a huge, completely hidden mountain range. New data reveals its birth over 500 million years ago The mysterious ‘ghost mountains’ – buried beneath kilometres of Antarctic ice – have puzzled scientists for decades.

New study of an ancient collision zone reveals origins of enormous mountain range, hidden beneath the East Antarctic ice sheet and central to Earth's tectonic history ♨️

- from @jaxhalpin.bsky.social and Nathan Daczko

@imas-utas.bsky.social | Macquarie Uni

theconversation.com/antarctica-h...

YouTube video by ACEAS The Denman Marine Voyage is a scientific collaboration

As the #DMV nears its end, @antarcticsciaus.bsky.social Science Lead Prof. Delphine Lannuzel explains why this scientific collaboration in the field is "super important."

Voyage partners: @antarctic.bsky.social | @arcsaef.bsky.social | AAD

@utas.edu.au | ANU | UNSW

www.youtube.com/watch?v=3-6W...

Finishing the #Denman Marine Voyage with more outreach

I invited students from my old high school in Northern Germany to come on a virtual tour of RSV Nuyina. Through the @antarcticsciaus.bsky.social school outreach program, 96 year 11 students learned about the science we do on DMV: 🌊🧊🇦🇶🧪🦭🌡️🐙☁️

🐚 AAPP PhD student @utas.edu.au Nia Riengchan studies how acidification of the Southern Ocean affects the shell-building of small planktonic snails called 'sea butterflies'. Now, for the first time, she's able to watch their babies develop.

🌊 Full #DMV video at youtu.be/1fTlpTQTOOc

🎞️ P Harmsen/AAD

As the #DMV reaches its final days in #Antarctica, the last rock dredges are underway.

This one retrieved "just three rocks, but all the same so that is very good!" - @hochmuth.bsky.social, pictured with Jo Whittaker.

Follow our research teams on our #DMV #blog ⬇️
antarctic.org.au/dmv#dmvblog

Tiny but mighty: microscopic algae to the rescue - ACEAS Tiny but mighty: microscopic algae to the rescue By Pauline Latour, Matthew Corkill, Katie Nawrath, Talitha Nelson, Jakob Weis and Delphine Lannuzel Aboard RSV Nuyina, we’ve travelled through the icy ...

The major role of phytoplankton in reducing carbon dioxide in the atmosphere is well established, yet the factors controlling phytoplankton growth are still not fully understood.

The #DMV is a great opportunity to learn more, write Pauline Latour and team ⬇️ #blog

antarctic.org.au/tiny-but-mig...

Satellite observing breakthrough for monitoring the movement of Antarctic dense water - ACEAS Satellite observing breakthrough for monitoring the movement of Antarctic dense water Ocean modelling researchers have discovered a reliable and long-term new method to capture the formation and expor...

Being able to monitor the overflow of #Antarctic dense waters from the continental shelf to deeper open waters is critically important, but has long been a major challenge for scientists.

New research from @matthisauger.bsky.social could be a game-changer ⬇️

antarctic.org.au/satellite-ob...

Yesterday was our last day in the sea ice. I was really lucky to have experienced this amazing landscape with its adorable wildlife in the last weeks. We had a very successful science program in areas of East Antarctica never studied before 🌊 🧪

Goodbye Antarctica 👋🇦🇶🐧

#DMV

All part of the process: biology meets chemistry off an ice shelf - AAPP Revealing the drivers of phytoplankton growth, their role in carbon cycling, and dynamics between ocean, seafloor and ice shelves

The #DMV has transited east and west of the Denman Glacier and the Shackleton Ice Shelf, and one side is markedly more biologically productive than the other.

How to find out why? Here's Delphine Lannuzel and Pauline Latour, with @antarctic.bsky.social ⬇️

aappartnership.org.au/all-part-of-...

From East #Antarctica, to the world! 🌏

#DMV scientists share the wonder and celebrate connection through our school outreach program - with Kinderhaus childcare in Munich, Weston High School in Massachusetts and Mount Nelson PS in Hobart.

@antarctic.bsky.social | @arcsaef.bsky.social | AAD

Sediment coring: examining an ancient 'layer cake' - ACEAS Sediment coring: examining an ancient ‘layer cake’ By Dr Taryn Noble Deep-sea sediment cores have been collected during the Denman Marine Voyage, a first for the RSV Nuyina. These sediments contain a ...

Sediment coring: examining a rich and ancient 'layer cake' of #Antarctic climate change

New records from the sea floor near the Denman Glacier and Shackleton Ice Shelf offer crucial insights dating back thousands of years, writes Dr Taryn Noble ⬇️ #DMV @utas.edu.au

antarctic.org.au/sediment-cor...

Yesterday, the weather cleared, paving the way for these stunning images from the air 🙌

📷: Pete Harmsen / AAD

DMV for kids - ACEAS DMV for kids The Denman Glacier Marine Research Expedition: Exploring Ice, Ocean, and Life in Antarctica By Professor Delphine Lannuzel, ACEAS Science Coordinator Just over the halfway mark of the Den...

Have you and your family been following the Denman Marine Voyage? Bringing you an update for kids! ✨

🧊 Find out what our scientists have been up to as they explore ice, ocean and life in #Antarctica - in our latest #DMV #blog post from Professor Delphine Lannuzel ⬇️

antarctic.org.au/dmv-for-kids/

😳 That‘s us!

Offshore to the west of the Denman Glacier, the Kasten core sediment tubes keep on coming - and this one, retrieved from the seafloor this week, is a keeper #DMV

Taryn Noble (@utas.edu.au) leads the research team to examine its many interesting layers ⬇️

📷: Katharina Hochmuth, Delphine Lannuzel

📢 Call for Abstracts: XIV ISAES 2025 🌎❄️

The XIV International Symposium on Antarctic Earth Sciences is heading to Punta Arenas, Chile 🇨🇱 – 18-22 August 2025!

🗓️ Abstract submission deadline: 28 April 2025
🇦🇶 Website: site.inach.cl/isaes2025/

YouTube video by Australian Antarctic Program Partnership Jade icebergs and plankton fertiliser

💎 What does the colour of icebergs have to do with storing carbon in the ocean? Prof Delphine Lannuzel is on board RSV Nuyina in East #Antarctica for the Denman Marine Voyage #DMV.

@utas.edu.au | @antarcticsciaus.bsky.social | @arcsaef.bsky.social | AAD

🌊 youtu.be/_3ZGE9P0Qg0

Looking up: Tracing the secrets of Southern Ocean clouds - AAPP While oceanographers plumb the depths, atmospheric scientists on the Denman Marine Voyage look skywards

🌨️ While oceanographers on the Denman Marine Voyage #DMV to East #Antarctica plumb the depths, our AAPP atmospheric scientists on RSV Nuyina look skywards with their heads in the clouds

💦 aappartnership.org.au/looking-up-t...

The #DMV has officially crossed the halfway mark and the team is on the move again, heading west to explore a new area off the Shackleton Ice Shelf 🧊🌊

For our science lead Delphine Lannuzel, it's a good time for mapping out the next few weeks of research!

📷: Katharina Hochmuth

Voyage of discovery in modern times - ACEAS Voyage of discovery in modern times By Craig Johnson It’s -22 °C chill factor outside, the water is -1.75 °C, and for the last half-hour the ship has been manoeuvring to avoid ice bergs. I’m cosy in s...

What does the deep seafloor in a previously-uncharted canyon off the edge of the continental shelf in eastern Antarctica look like?

Craig Johnson captures the wonder, awe and sheer joy of finding out by using a deep sea camera tow, in our latest #DMV #blog post ⬇️

antarctic.org.au/voyage-of-di...

Scientists collect unique sea creatures during voyage to East Antarctica From giant sea spiders to "sea pigs" and "sea butterflies" — analysing the rich biodiversity in Antarctica has thrilled researchers studying the impacts of climate change.

On the edge of #Antarctica, 60 scientists aboard RSV Nuyina are researching the impact of climate change on the fastest-melting glacier in the eastern part of the icy continent — ABC News with @utas.edu.au, @arcsaef.bsky.social, AAD and @antarcticsciaus.bsky.social

▶️ www.abc.net.au/news/2025-04...