Katerina Petronotis's Avatar

Katerina Petronotis

@kpetronotis

Geoscientist, former Manager of Science Operations at IODP/TAMU

726
Followers
181
Following
13
Posts
12.11.2024
Joined
Posts Following

Latest posts by Katerina Petronotis @kpetronotis

SODCO is hiring a Science Program Officer based at the Lamont-Doherty Earth Observatory. If youโ€™re a scientist with excellent organizational skills and excited to advance the next phase in U.S. scientific ocean drilling, check it out: academic.careers.columbia.edu#!/177103

03.03.2026 16:41 ๐Ÿ‘ 7 ๐Ÿ” 6 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Schematic diagram showing seafloor/sub-seafloor sampling technologies that might be utilized for SODCO expeditions. Modified after FUTURE 2024 Team

Schematic diagram showing seafloor/sub-seafloor sampling technologies that might be utilized for SODCO expeditions. Modified after FUTURE 2024 Team

๐ŸšจIf you're working on a US scientific ocean drilling proposal @us-sciod.bsky.social just added several info pages on:

The Operational Planning Process
Vessels and Platforms
Coring and Downhole Measurements
Containerized Laboratories

sodco.org#proposals

02.03.2026 21:11 ๐Ÿ‘ 8 ๐Ÿ” 9 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Flyer for Martin Peterson lecture....

Flyer for Martin Peterson lecture....

Dr. Martin Peterson delivers "The Lecture that Texas A&M Banned" on Wednesday, February 25!

530pm
MSC Room 1400
Texas A&M University

Come on out!


docs.google.com/form...

24.02.2026 01:30 ๐Ÿ‘ 31 ๐Ÿ” 12 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Preview
Onset of millennial climate variability with the intensification of Northern Hemisphere glaciation The Quaternary Period (the last 2.58 Ma) was characterized by the waxing and waning of large ice sheets in the Northern Hemisphere. Using sediment sequences from the Iberian Margin, we demonstrate tha...

Very proud of this one:

www.science.org/doi/10.1126/...

19.02.2026 21:39 ๐Ÿ‘ 29 ๐Ÿ” 10 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 3

Happening tomorrow at 2pm! sodco.org/operational-...

19.02.2026 18:58 ๐Ÿ‘ 4 ๐Ÿ” 4 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Preview
Evaluating the Reliability of Grainโ€Size Sorting for Organic Biomarker Analysis We investigate the potential of using grain-size sorted marine sediments for biomarker analysis GDGT distributions are consistent regardless of grain-size sorting, and fine-grained sediment fract...

New paper out in Paleoceanography and Paleoclimatology: We used Cenozoic-spanning marine sediments to determine whether archived grain-size sorted sediments can be resurrected for biomarker analysis.
Great to see my first piece of PhD work published, available #openaccess: doi.org/10.1029/2025...

17.02.2026 15:16 ๐Ÿ‘ 16 ๐Ÿ” 7 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1

Application deadline ๐˜๐—ต๐—ถ๐˜€ ๐—™๐—ฟ๐—ถ๐—ฑ๐—ฎ๐˜†, February 20th!
Details below ๐Ÿ‘‡

16.02.2026 15:19 ๐Ÿ‘ 3 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Composite VGP and RPI record with interpreted geomagnetic polarity chrons. Downcore variations of the virtual geomagnetic pole (VGP) latitude (a), geomagnetic polarity chrons (b), and the relative palaeointensity (RPI) of the geomagnetic field (c) from an approximately 8 m composite interval of sediment at IODP Site U1408.

Composite VGP and RPI record with interpreted geomagnetic polarity chrons. Downcore variations of the virtual geomagnetic pole (VGP) latitude (a), geomagnetic polarity chrons (b), and the relative palaeointensity (RPI) of the geomagnetic field (c) from an approximately 8 m composite interval of sediment at IODP Site U1408.

If this is real, a bit alarming.
Earth's magnetic field protects us from all sorts of cosmic nasties. Due to the way the magnetic fieds is generated, it sometimes reverses, weakening in the interim. This study shows that those reversals can be rather long. โš’๏ธ๐Ÿงช

Link: www.nature.com/articles/s43...

13.02.2026 15:11 ๐Ÿ‘ 17 ๐Ÿ” 4 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

An essential next step. Spread the news!

09.02.2026 20:58 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Preview
a cat is crawling on the floor with the words `` you know what time it is '' below it . Alt: a cat is crawling on the floor with the words `` you know what time it is '' below it .

๐ŸšจIt's time to dust-off your shelved scientific ocean drilling proposals!
To help science teams prepare for developing an NSF drilling proposal, our office (SODCO) will host a webinar to walk proponents through the operational planning process.
Sign up here:
columbiauniversity.zoom.us/meeting/regi...

09.02.2026 15:28 ๐Ÿ‘ 10 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1
The Chemistry Lab at Texas A&M University's department for Scientific Ocean Drilling.

The Chemistry Lab at Texas A&M University's department for Scientific Ocean Drilling.

๐ŸšจJob alert๐Ÿšจ
Want to work as a Chem Tech for @us-sciod.bsky.social at Texas A&M University? Then apply below!
Responsibilities include prep lab containers for seagoing expeditions, mobilization/demobilization, sailing to operate instruments at sea...
tamus.wd1.myworkdayjobs.com/TAMU_Externa...

05.02.2026 21:03 ๐Ÿ‘ 7 ๐Ÿ” 5 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
The study's lead author Alba Gonzalez-Lanchas (left) and two other scientists from Exp403 investigate sediment cores rich in ice-rafted debris aboard the JOIDES Resolution.

The study's lead author Alba Gonzalez-Lanchas (left) and two other scientists from Exp403 investigate sediment cores rich in ice-rafted debris aboard the JOIDES Resolution.

๐ŸšจThe first paper from Exp403 to the Fram Strait is out. If you ever worked in the High Arctic, you know how hard it is to age-scale the sediments. Here we present an unprecedented record of key nannofossils in the region that will make this a bit easier.
www.sciencedirect.com/science/arti...

05.02.2026 14:02 ๐Ÿ‘ 6 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Schematic summary of the eruptive history of Kolumbo Volcano.

Schematic summary of the eruptive history of Kolumbo Volcano.

๐ŸšจCheck out our new IODP paper on Kolumbo Volcano in Greece. Despite being one of Europe's most dangerous volcanoes not much is known about its eruptive history. The paper led by @abigaillily.bsky.social adds important insight into the Kolumbo-Santorini system
pubs.geoscienceworld.org/gsa/geology/...

04.02.2026 17:38 ๐Ÿ‘ 26 ๐Ÿ” 11 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 3
Photograph of a sediment core highlighting thin (<0.5 cm) silt to very fine sand beds. Tick marks on left side are each one millimeter. From Figure 3 of Varela et al. (2026).

Photograph of a sediment core highlighting thin (<0.5 cm) silt to very fine sand beds. Tick marks on left side are each one millimeter. From Figure 3 of Varela et al. (2026).

Excited that this paper, led by former PhD student Natalia Varela (based on her dissertation), is now out!

We use the occurrence & characteristics of thin, silty turbidites from the Ross Sea to interpret Antarctic Bottom Water outflow since ~3.3 Ma.

agupubs.onlinelibrary.wiley.com/doi/10.1029/...

03.02.2026 15:25 ๐Ÿ‘ 31 ๐Ÿ” 10 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0
JOIDES Resolution derrick (source Katerina Petronotis)

JOIDES Resolution derrick (source Katerina Petronotis)

Welcome to bsky US Scientific Ocean Drilling! @us-sciod.bsky.social

03.02.2026 19:21 ๐Ÿ‘ 10 ๐Ÿ” 4 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1

Only one month left to apply for the SODCO undergrad internship at @tamu.bsky.social! Deadline is February 20th.
sodco.org/opportunitie...

20.01.2026 17:00 ๐Ÿ‘ 3 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
PNAS Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...

First 2026 issue @pnas.org features @khorikawa.bsky.social et al.'s work on deep marine sediment from #AmundsenSea. #Pliocene muds contain material from bedrock sources as far inland as #EllsworthWhitmore Mountains: a sign of major #WAIS retreat & #glacial- #deglacial switching ow.ly/wHeq50XTv2n

08.01.2026 22:17 ๐Ÿ‘ 7 ๐Ÿ” 4 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1
Post image

Intercepted mail....
A former student sent this email to the provost and president and cc:ed one of our members:

09.01.2026 00:27 ๐Ÿ‘ 21 ๐Ÿ” 5 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Preview
Spatially variable response of Antarcticaโ€™s ice sheets to orbital forcing during the Pliocene - Nature Geoscience The West Antarctic Ice Sheet responded to different natural forcing mechanisms than the East Antarctic Ice Sheet through the mid-Pliocene due to a greater sensitivity to oceanic feedbacks, according t...

โš’๏ธ Article: The West Antarctic Ice Sheet responded to different natural forcing mechanisms than the East Antarctic Ice Sheet through the mid-Pliocene due to a greater sensitivity to oceanic feedbacks

@harpurcollege.bsky.social

www.nature.com/articles/s41...

02.01.2026 17:00 ๐Ÿ‘ 7 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Oceanblogs | www.oceanblogs.org

Seit Mitte Dezember ist ein internationales Forschungsteam unter Leitung GEOMAR mit der METEOR unterwegs, um neue Erkenntnisse รผber das Vulkansystem vor Santorini zu gewinnen.

โœ๏ธ Auf Oceanblogs.org berichten sie รผber ihre Forschung und das Leben an Bord.

Schaut vorbei: www.oceanblogs.org/m215/

07.01.2026 11:59 ๐Ÿ‘ 50 ๐Ÿ” 13 ๐Ÿ’ฌ 3 ๐Ÿ“Œ 1
Preview
Oligocene deep ocean oxygen isotope variations primarily driven by temperature - Nature Geoscience Large benthic oxygen isotope fluctuations in the Oligocene Southern Ocean primarily represent deep water temperature changes, suggesting the Antarctic ice sheet volume was relatively stable, according...

www.nature.com/articles/s41...

@bjerknes.uib.no @marumunibremen.bsky.social @unibremen.bsky.social

07.01.2026 11:23 ๐Ÿ‘ 12 ๐Ÿ” 7 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Post image

From an email to one of our faculty members....

Not even Plato can escape censorship at Texas A&M!

06.01.2026 20:15 ๐Ÿ‘ 2782 ๐Ÿ” 1028 ๐Ÿ’ฌ 128 ๐Ÿ“Œ 451
The sign for the Scientific Ocean Drilling Building in front of a tree. A red bicycle is leaning against the sign.

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.

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.

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.socialโ€™s West Campus.

06.01.2026 23:22 ๐Ÿ‘ 6 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Let's break the Internet with this today.....

05.01.2026 19:04 ๐Ÿ‘ 1334 ๐Ÿ” 621 ๐Ÿ’ฌ 23 ๐Ÿ“Œ 8

Thanks GlobalTV Canada! ๐Ÿ‡จ๐Ÿ‡ฆ

23.12.2025 09:18 ๐Ÿ‘ 15120 ๐Ÿ” 3854 ๐Ÿ’ฌ 380 ๐Ÿ“Œ 138
Video thumbnail

The full spiked 60 Minutes CECOT package, clean & subtitled. 1/5

23.12.2025 01:28 ๐Ÿ‘ 35892 ๐Ÿ” 18253 ๐Ÿ’ฌ 563 ๐Ÿ“Œ 1735

Closing out my year with a journal editor shocker ๐Ÿงต

Checking new manuscripts today I reviewed a paper attributing 2 papers to me I did not write. A daft thing for an author to do of course. But intrigued I web searched up one of the titles and that's when it got real weird...

19.12.2025 17:20 ๐Ÿ‘ 2384 ๐Ÿ” 1224 ๐Ÿ’ฌ 69 ๐Ÿ“Œ 358

Well, THIS seems like a good use of taxpayer money! /s

16.12.2025 01:56 ๐Ÿ‘ 876 ๐Ÿ” 48 ๐Ÿ’ฌ 20 ๐Ÿ“Œ 0
The Texas Center for Extreme Weather is hosting a workshop on:

 

High and Ultra-high Resolution Modeling of the Earth System

April 13โ€“15, 2026 at Texas A&M University, College Station, Texas

The current generation of earth system models used by the IPCC have proven useful in simulating and projecting global temperature change. However, deficiencies and biases persist in these projections, especially at regional and local scales. The typical spatial resolution of these models (~100 km) is too coarse to resolve regional details and fine-scale storm systems. The next generation of earth system models is targeted at resolutions ranging from high-resolution (~10โ€“25 km) where frontal systems can be simulated and ultra-high resolution (~3 km) where clouds begin to be resolved. Modeling at these resolutions poses significant scientific and computational challenges, but it can provide important benefits for societal applications.

Topics to be discussed in the workshop will include:

ยท      Status of current high/ultra-high resolution earth system modeling efforts, including the NSF MESACLIP, StormSPEED, and MPAS-related projects from TAMU and NSF NCAR

ยท      Future directions and challenges in increasing model resolution

ยท      Applications of fine-resolution simulations for problems relevant to society, including extreme weather, hydrology, and regional planning  

Registration and abstract submission details may be found on the workshop website: https://sites.google.com/tamu.edu/tamu-hires-workshop-2026

Please contact R. Saravanan (sarava@tamu.edu) for more information.

The Texas Center for Extreme Weather is hosting a workshop on: High and Ultra-high Resolution Modeling of the Earth System April 13โ€“15, 2026 at Texas A&M University, College Station, Texas The current generation of earth system models used by the IPCC have proven useful in simulating and projecting global temperature change. However, deficiencies and biases persist in these projections, especially at regional and local scales. The typical spatial resolution of these models (~100 km) is too coarse to resolve regional details and fine-scale storm systems. The next generation of earth system models is targeted at resolutions ranging from high-resolution (~10โ€“25 km) where frontal systems can be simulated and ultra-high resolution (~3 km) where clouds begin to be resolved. Modeling at these resolutions poses significant scientific and computational challenges, but it can provide important benefits for societal applications. Topics to be discussed in the workshop will include: ยท Status of current high/ultra-high resolution earth system modeling efforts, including the NSF MESACLIP, StormSPEED, and MPAS-related projects from TAMU and NSF NCAR ยท Future directions and challenges in increasing model resolution ยท Applications of fine-resolution simulations for problems relevant to society, including extreme weather, hydrology, and regional planning Registration and abstract submission details may be found on the workshop website: https://sites.google.com/tamu.edu/tamu-hires-workshop-2026 Please contact R. Saravanan (sarava@tamu.edu) for more information.

๐ŸšจWorkshop alert๐Ÿšจ
High and Ultra-high Resolution Modeling of the Earth System
April 13-15, 2026, in College Station TX.

sites.google.com/tamu.edu/tam...

10.12.2025 17:58 ๐Ÿ‘ 16 ๐Ÿ” 5 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Preview
BREAKING: โ€˜This hurtsโ€™: UNL eliminates 4 programs despite faculty, student pleas The University of Nebraska-Lincoln eliminates the Earth and atmospheric sciences 8-0, educational administration 7-1, statistics 7-1, textiles, merchandising and fashion design 7-1 programs.

It's over.

Despite the fact that the academic council recommended against it, despite the fact that the program brought in more tuition than it cost, and despite the fact that Nebraskans need & deserve this expertise, Earth & Atmospheric Sciences will be cut.

www.dailynebraskan.com/news/adminis...

06.12.2025 17:35 ๐Ÿ‘ 1118 ๐Ÿ” 480 ๐Ÿ’ฌ 64 ๐Ÿ“Œ 136