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Trevor Williams

@drtrevorwilliams.bsky.social
243 followers 126 following 6 posts

Associate Professor at the College of Marine Science, University of South Florida

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Reposted by Trevor Williams
Kate Marvel @drkatemarvel.bsky.social · 23/06/2026
It now costs more to cause climate change than to prevent it
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Dr. Thomas Ronge @thomasronge.bsky.social · 10/06/2026
On Svalbard Exp403 scientists just had the rare chance to observe the sources & processes of ice-rafted debris found in our drill cores. IRD = rocks broken off by glaciers on land, rafted out at sea on icebergs, & dropped on the seafloor. It's an important indicator of past climate dynamics.
An iceberg covered in rocky debris floating at see. In the background are snow-covered mountain slopes.A scientist kneeling on exposed permafrost ice, analyzing a piece of ice and taking a picture. He's dressed in winter gear.A kayaker dressed in a red dry suit paddeling in front of a small iceberg with a clearly visible patch of ice-rafted debris. A cloese-up picture of a drill core recovered off Svalbard during Expedition 403. Embedded in the brownish matrix are multiple clasts of ice-rafted debris.
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Gulf Coast Repository @gcrepository.bsky.social · 29/05/2026
Our very first GCR user spotlight features Anuska Pudasaini, a PhD Candidate at the Department of Earth and Atmospheric Sciences at the University of Houston. Anuska analyzed grain sizes of Antarctic sediments using our Bettersizer S3 Plus Particle Size and Shape Analyzer. #GCR #NSFfunded
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Amelia Shevenell @ashevenell.bsky.social · 24/05/2026
Fire update: thanks to heroic efforts by contractors & USF CMS ops staff, my group got most of our samples. Yesterday books emerged. Waiting for space allocations for prep labs & offices. Instruments & buildings will take longer; advocating for mobile labs in short to mid term. Funding still needed.
Smokey wet booksAmelia, Brad, Pat, and Trevor’s samples (and Hollander’s)Chilled samples Books drying in the sun
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Shel Winkley @shelwinkleywx.bsky.social · 15/05/2026
It's not just the sun's rays; the wind is doing some big work, too. 💨Did you know, Texas LED the nation for wind generation in 2025 at 129,458 GWh? ❗That outpaced the #2 producing state, Iowa, by ~86k GWh ☀️Texas was #2 for solar generation at 64,073 GWh 📊 www.climatecentral.org/climate-matt...
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IMMAGE Land-2-Sea @immageland2sea.bsky.social · 11/05/2026
In April, researchers from across Europe and beyond met in Granada for the IODP Expedition 401 post-cruise meeting. Scientists shared post-cruise research results, providing new insights on how the Atlantic and Mediterranean exchanged water during the Messinian Salinity Crisis. (cont. in thread)
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Amelia Shevenell @ashevenell.bsky.social · 06/05/2026
As many know, there was a massive fire at USF CMS. The building held offices, labs, equipment, etc and is a total loss. We are most concerned about the finanpcial losses of our students. Please consider donating to the official go fund me supporting our graduate students.
gofundme.com
Donate to USF Marine Science: Fire Recovery Support, organized by Bella Iannotta
On Saturday, May 2nd the University of South Florida Marine Science Lab (MSL)… Bella Iannotta needs your support for USF Marine Science: Fire Recovery Support
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Trevor Williams @drtrevorwilliams.bsky.social · 03/05/2026
Fire is out at the USF St Petersburg College of Marine Science - happily nobody was injured, but it doesn’t look good for the building
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Trevor Williams @drtrevorwilliams.bsky.social · 30/04/2026
It was a great science meeting!
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U.S. Scientific Ocean Drilling @us-sciod.bsky.social · 28/04/2026
New report! Advancing Future Ocean Drilling in the United States (FOCUS) was a community effort to identify priorities for US SciOD in the first phase of post-IODP drilling, with an emphasis on needs for new expeditions. Read the report at usoceandiscovery.org/focus. Thanks to all who participated!
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U.S. Scientific Ocean Drilling @us-sciod.bsky.social · 15/04/2026
This Saturday, SODCO will be participating in the American Museum of Natural History EarthFest. If you're in NYC, check it out! We'll be in the Hall of Ocean Life with a giant inflatable model of the JOIDES Resolution, ready to chat about SciOD! EarthFest details: www.amnh.org/calendar/earthfest
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Dr. Crystal A. Kolden @pyrogeog.bsky.social · 09/04/2026
As a fire scientist, I am devastated for my many good friends and colleagues who will be affected by the mass closure of so many research stations and offices. Many will leave the agency. USFS has pioneered so much foundational fire science. The consequences of this will be catastrophic.
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Gulf Coast Repository @gcrepository.bsky.social · 09/04/2026
Welcome to the GCR! We serve the global scientific community by preserving scientific ocean drilling sub-seafloor samples, facilitating cutting-edge research through access to geologic samples and world class laboratory facilities, and training the next generation of geoscientists. #GCR #NSFfunded
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Dr. Imogen Browne @imogenmireille.bsky.social · 07/04/2026
Check out our International Ocean Discovery Program Data Report from Site U1521 in the Ross Sea, published today! Thanks to my coauthors including A. Shevenell, D. Kulhanek, C. Prunella, and the Exp 374 Scientists for their efforts towards this 🎉 🇦🇶 🚢 publications.iodp.org/proceedings/...
publications.iodp.org
Data report: sedimentary X-ray fluorescence scanning of International Ocean Discovery Program Expedition 374 Site U1521, Ross Sea, Antarctica
Data report: sedimentary X-ray fluorescence scanning of International Ocean Discovery Program Expedition 374 Site U1521, Ross Sea, Antarctica
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Dr. Thomas Ronge @thomasronge.bsky.social · 03/04/2026
Love how this image captures the mission's "For All Humanity" motto. There are no borders in space! But to get oriented a bit better, here is a version I annotated. Still can't wrap my head around how amazing this picture, the Artemis crew took, is.
NASA astronaut and Artemis II Commander Reid Wiseman took this picture of Earth from the Orion spacecraft’s window after completing the translunar injection burn. There are two auroras (top right and bottom left) and zodiacal light (bottom right) is visible as the Earth eclipses the Sun.
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Australian Antarctic Program Partnership @antarctic.bsky.social · 01/04/2026
🌊 "Antarctica is not just some distant, irrelevant, frozen continent; it is a critical element that is deeply intertwined with all of us and will profoundly shape the future destiny of human society"—Yu Wang, PhD student @utas.edu.au @imas-utas.bsky.social ▶️ aappartnership.org.au/zoom-rotate-...
aappartnership.org.au
Zoom, rotate, peel: Visualising ice sheets at your fingertips - AAPP
A new interactive three-dimensional mapping tool for ice and oceans in Greenland and Antarctica
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Australian Centre for Excellence in Antarctic Science (ACEAS) @antarcticsciaus.bsky.social · 13/03/2026
🚢 After 55 days in the Southern Ocean, the COOKIES voyage to the Cook Ice Shelf marine region has returned with something rare: a glimpse into Antarctica’s past – and clues to its future. Learn more ▶️ antarctic.org.au/cookies-blog...
antarctic.org.au
COOKIES Blog #14 – COOKIES wrap up: 55 Days in the Southern Ocean - ACEAS
Fifty-five days in the Southern Ocean is long enough to lose track of which day it is, but not long enough to lose your sense of awe. Departing on 2 January 2026, the Cook Ice Ecosystems and Sediments...
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LegraLeGra @atthenius.bsky.social · 16/02/2026
#savencar
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Jen Mercieca @jenmercieca.bsky.social · 31/01/2026
Texas A&M’s Melting Point: Five presidents in five years. High-profile firings and cancellations. Crackdowns on dissent. Inside state leaders’ efforts to remake one of our finest institutions. archive.ph/q0wgP
archive.ph
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Katie Mack @astrokatie.com · 25/01/2026
A reminder to the news media: “conflicting accounts” is what you say BEFORE the incontrovertible video evidence appears. After that, your job is to ask why one side is lying, not to repeat the lie and pretend no one knows the truth.
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Dr. Thomas Ronge @thomasronge.bsky.social · 06/01/2026
New Year, New Us. Looks like our new Scientific Ocean Drilling branding is up. You can still find us at our usual spot on @tamu.bsky.social’s West Campus.
The sign for the Scientific Ocean Drilling Building in front of a tree. A red bicycle is leaning against the sign.An areal photo of the entire TAMU main campus and the surrounding areas of Bryan and College Station. A label marks the location of the Scientific Ocean Drilling Building on the West Campus.
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James Lea @jamesmlea.bsky.social · 17/12/2025
🚨POSTDOC JOB ALERT🚨 We have an exciting opportunity for a 2 year postdoc on remote sensing of icebergs and marine terminating glaciers. See the link below for more info! Please spread widely, and feel free to email me with any Q's :) tinyurl.com/2jjcmea9
Photo of a marine terminating glacier in Greenland with icebergs in front of it
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Dr. Thomas Ronge @thomasronge.bsky.social · 10/12/2025
Speaking of the GCR, if you want to spend a week there to learn about scientific ocean drilling, analytical techniques, work with legacy cores, etc. apply here by Feb 15th, 2026 gcr.tamu.edu/outreach/upc...
gcr.tamu.edu
Gulf Coast Repository
Gulf Coast Repository
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Trevor Williams @drtrevorwilliams.bsky.social · 05/12/2025
A new field of “soilsmology” :)
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Prof Ian Hall @ianhall.bsky.social · 05/12/2025
🌊 Our latest study reconstructs the tropical Indian Ocean during the mid-Pliocene - a past warm world with CO2 similar to today. A reminder that future oceans may reorganise in ways that reshape ecosystems and the carbon cycle. IODP EXP361 cp.copernicus.org/articles/21/...
cp.copernicus.org
Photic zone niche partitioning, stratification, and carbon cycling in the tropical Indian Ocean during the Piacenzian
Abstract. The mid-Piacenzian Warm Period (mPWP; ∼ 3.264–3.025 Ma) marks the most recent episode of sustained global warmth, characterised by atmospheric carbon dioxide (pCO2) levels similar to those o...
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Trevor Williams @drtrevorwilliams.bsky.social · 03/12/2025
We invite applications for two graduate students to investigate Antarctic ice sheet instability during past warm interglacials using marine sediments. Please share with students who may be interested to join our group at USF! Contact me for details; deadline 15 Dec. www.usf.edu/marine-scien...
usf.edu
Prospective Students - Education | USF College of Marine Science
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Dr. Thomas Ronge @thomasronge.bsky.social · 02/12/2025
Not under her own power anymore, the vessel that revealed more about our planet than most others, the legendary JOIDES Resolution is being towed to a pre-cleaning yard in Lyngdal, Norway. First pic I've seen of her since stepping off in August 24. Still looking great 🫡💔 www.fvn.no/magasin/i/8q...
The former IODP research drillship JOIDES Resolution being pulled by two tug boats in a Norwegian fjord.
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Emily Estes @moxnrox.bsky.social · 24/11/2025
New publication!! Featuring some of the most gorgeous rocks I’ve ever cored, tremendous work by an international, interdisciplinary team, and interesting implications for marine CDR. Article: www.nature.com/articles/s41... News & views: www.nature.com/articles/s41...
nature.com
A geological carbon cycle sink hosted by ocean crust talus breccias - Nature Geoscience
Mass-wasting deposits that accumulated against mid-ocean ridge faults have high porosity in which calcium carbonate precipitated, storing seawater carbon dioxide, as revealed by cores of a 61-million-...
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Mapping and Geographic Information Centre @magic.bas.ac.uk · 19/11/2025
New data alert 🚨📣: Updated Coastline and Rock Outcrop of Antarctica released as part of the @scar-antarctic.bsky.social Antarctic Digital Database. With big improvements to date formats, coastline positions and more accurate rock outcrop! 📍View and download via the map viewer add.scar.org.
Map showing the Antarctic Peninsula, overlayed with a grid depicting the percentage of rock outcrop change comparing the previous Antarctic Digital Database rock outcrop dataset to the newly released one. Satellite image map of Day Island in Antarctica depicting a green line to illustrate positions of the Antarctic Digital Database v7.10 coastline, and a red line illustrating the position of the Antarctic Digital Database v7.11 coastline. This illustrates where the new coastline has been improved.
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Dr. Thomas Ronge @thomasronge.bsky.social · 07/11/2025
The initial SODCO website is now online and will evolve over time. Keep an eye open for Scientific Ocean Drilling events (looking at you @agu.org Annual Meeting) and announcements about proposals, workshops, expeditions, internships, etc… www.sodco.org
sodco.org
SODCO - U.S. Scientific Ocean Drilling Coordination Office
SODCO is a collaboration between Texas A&M University and Lamont-Doherty Earth Observatory, providing support for scientific ocean drilling proposals, expeditions, and community engagement.
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Katerina Petronotis @kpetronotis.bsky.social · 30/10/2025
I heard it’s headed to Turkey to be scrapped. RIP
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USF College of Marine Science @cmarinescience.bsky.social · 07/10/2025
🌊In a new study co-led by USF professor @oceanandclimate.bsky.social Patrick Rafter, researchers used forams from the Pliocene to show that warming in the tropical Pacific may not trigger the severe decline in nutrients predicted by earlier models. www.usf.edu/marine-scien...
usf.edu
How ancient plankton point to the resilience of ocean ecosystems
The researchers used a cutting-edge approach to predict future ocean conditions by examining the distant past through analyses of microscopic fossils.
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Dr. Thomas Ronge @thomasronge.bsky.social · 22/08/2025
🚨Looking for a Geoscience Perspective on Climate Change? Exp403 co-chief Kristen St. John and former JRFB chair Larry Krissek just published this OPEN ACCESS book on it! Download it for free below! link.springer.com/book/10.1007...
link.springer.com
Climate Change
This book assesses past climatic change from a geoscience perspective and addresses common misconceptions on climate.
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Doug Lewin @douglewin.bsky.social · 21/08/2025
Texas is nearing 100 gigawatts of emission-free power (solar, wind, storage, nuclear). EIA reported yesterday that the US will install 50 gigawatts of solar + storage in 2025, 40% of it in Texas. That & much more in today's Grid Roundup. Link in reply.
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Australian Antarctic Program Partnership @antarctic.bsky.social · 22/07/2025
#Antarctic sea ice is: ⚙️ a global climate engine ☂️ a cooling sunshade 🌀 a pumphouse for currents 🧊 a vast verandah for life ♻️ one of the largest seasonal cycles on Earth 🌬️ highly sensitive to climate variability 🌊 What happens when there's less sea ice? aapp.shorthandstories.com/a-world-with...
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Sandra Passchier @passchier.bsky.social · 01/07/2025
Check out our latest #IODP #Exp379 contribution about the #Antarctic Ice Sheet's history @natcomms.nature.com. Read the full article here: rdcu.be/euikE
rdcu.be
West Antarctic ice retreat and paleoceanography in the Amundsen Sea in the warm early Pliocene
Nature Communications - A geological climate archive documents the effects of ocean warming on Antarctic marine ice-sheets. Large sediment fluxes from the interior of West Antarctica precede the...
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Dr. Andrea Dutton @drandreadutton.bsky.social · 23/06/2025
Great summary of our recent paper on sea level rise during a past warm period and what it means for our future. Thanks, @climateages.bsky.social , for featuring our work.
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Gavin Schmidt @climateofgavin.bsky.social · 16/05/2025
😥 www.nytimes.com/2025/05/16/n...
nytimes.com
NASA Office Above ‘Seinfeld’ Diner Is a Target of Trump Budget Shrinkage
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Ariel Waldman @arielwaldman.com · 06/05/2025
😓 These are the folks who provide satellite imagery, maps, and geospatial support to American scientists that operate in polar regions where most satellites don’t reach. FOR DECADES they have done this, supporting critical work. They have helped me many times. This is terrible. #WithoutNSF
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Dr. Thomas Ronge @thomasronge.bsky.social · 28/04/2025
Studying the role ocean circulation played in shaping past climate and glacial dynamics, I’m absolutely captivated by this new NASA simulation. Check out the full video here: svs.gsfc.nasa.gov/vis/a010000/...
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Australian Centre for Excellence in Antarctic Science (ACEAS) @antarcticsciaus.bsky.social · 16/04/2025
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...
antarctic.org.au
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 ...
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Australian Centre for Excellence in Antarctic Science (ACEAS) @antarcticsciaus.bsky.social · 12/04/2025
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
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Dr. G @drlauraguertin.bsky.social · 01/04/2025
The first time Sidney Hemming (from @lamontearth.bsky.social) sailed on JOIDES Resolution was in the role of a co-chief scientist. But this is just one part of Sidney’s "big adventure" for IODP Expedition 361. Take a listen at #TalesFromTheDeep in the StoryCorps Archive. 🧪🌊⚒️
archive.storycorps.org
"The Mozambique permissions was a major factor in a lot that went on during that expedition... many really depended on Mozambique samples"
Sidney Hemming's first time sailing on JOIDES Resolution was in the role of a co-chief scientist. But this is just one part of Sidney’s "big adventure" for Expedition 361. Take a listen to Sidney’s de...
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Australian Centre for Excellence in Antarctic Science (ACEAS) @antarcticsciaus.bsky.social · 01/04/2025
These rocks were retrieved from the first dredge, deployed to a water depth of 2700 metres on the steep eastern slope of the Eastern Bruce Rise. Further dredges are planned, including to features that may be extinct underwater volcanoes. @utas.edu.au 📷: Katharina Hochmuth / Delphine Lannuzel
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Dr. Thomas Ronge @thomasronge.bsky.social · 20/03/2025
Please note that our labs now also have windows ☀️ It's sad that the JR got retired, but with all the ship's lab equipment here, the GCR has quickly been transformed to a cutting edge core research facility!
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Peter T Fretwell @ptfretwell.bsky.social · 10/03/2025
Bedmap3 is now out rdcu.be/ecTmO
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Trevor Williams @drtrevorwilliams.bsky.social · 08/03/2025
Standing up for science at Texas A&M #standupforscience
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Rob Larter @polarrobs.bsky.social · 07/03/2025
For more detail on my comments about why sea ice decline matters, see the thread I posted on Mastodon a few days ago fediscience.org/@PoLaRobs/11...
fediscience.org
Rob Larter (@PoLaRobs@fediscience.org)
Attached: 1 image If you are wondering why the decline in sea-ice extent matters, there are several reasons. Here is how I described them on the birdsite a couple of years ago. Firstly there is the ...
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Dr. Thomas Ronge @thomasronge.bsky.social · 05/03/2025
Expedition 398 E&O Officer Susan just published a book on the amazing cores we drilled in and around Santorini. It's great for anyone (layperson to expert) who wants to learn about these stunning cores. The best thing of it all? You can download it 𝗳𝗼𝗿 𝗳𝗿𝗲𝗲 here: joidesresolution.org/activities/e...
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