Prof Sebastian Geiger 's Avatar

Prof Sebastian Geiger

@geoenergyprof.bsky.social

Professor for Sustainable Geoenergy at TU Delft and passionate πŸ‡ͺπŸ‡Ί, conducting #research in #geoenergy, #geoscience, & #energytransition (views are my own)

356 Followers  |  249 Following  |  111 Posts  |  Joined: 07.12.2023  |  2.1547

Latest posts by geoenergyprof.bsky.social on Bluesky


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Treasury holdings can be Europe's big stick in Greenland dispute - Deutsche Bank Deutsche Bank warns Europe could wield $8T in U.S. assets as Greenland tensions rise, pressuring the dollar and Treasury yields.

seekingalpha.com/news/4540092...

18.01.2026 22:25 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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High temperatures today and we’ve already had a long period of drought. Drinking water always seemed completely self-evident in NL. But it’s not.
Although the Dutch focus has traditionally been on how to keep water out, we need to focus more on storing water.
πŸ‘‰ www.tudelft.nl/en/stories/a...

01.07.2025 08:57 β€” πŸ‘ 3    πŸ” 3    πŸ’¬ 1    πŸ“Œ 0
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Energi Simulation continues geoenergy partnership with Delft University

In times when funding becomes increasingly challenging and restrictive, this investment from Energi Simulation is a real difference maker for many PhDs and postdocs working in the field of #geoscience for the ##energytransition at our department at TU Delft

www.tudelft.nl/en/2025/citg...

26.06.2025 19:06 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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At this year's #EAGEAnnual2025 my colleague Anne gave a truly passionate and compassionate pitch why #geoscience #education needs to become more inclusive and diverse if we are serious about inspiring new talents to enter this field and work on the #energytransition @rockdeftud.bsky.social βš’οΈπŸ’‘πŸ”‹

03.06.2025 17:03 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Photo by Richard Lasher. Horizontal and vintage photo of a road in a mountain forest. Red car with a motorbike on the road. In the distance a huge ash cloud from the eruption of Mt St. Helens on May 18th, 1980.

Photo by Richard Lasher. Horizontal and vintage photo of a road in a mountain forest. Red car with a motorbike on the road. In the distance a huge ash cloud from the eruption of Mt St. Helens on May 18th, 1980.

On May 18, 1980, Richard Lasher got up early to get some photos at Spirit Lake. Instead, he was forced to stop because of the massive, explosive Mount St. Helens eruption and captured this iconic photo with his own red Ford Pinto on the road. πŸ§ͺβš’οΈ #OTD

www.hemmings.com/stories/mt-s...

18.05.2025 07:02 β€” πŸ‘ 1802    πŸ” 498    πŸ’¬ 29    πŸ“Œ 40

Thank you Tanja for this letter. I have already written to my MP recently but will follow your example and write another letter.

12.05.2025 15:02 β€” πŸ‘ 9    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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PhD Jesse came by in the afternoon and made my day with these freshly cored heterogeneous #Rotliegend #sandstone samples for #CrossScale w/ @geoenergyprof.bsky.social Aren't they pretty? Next: cutting them (and deciding where...), CT scan, porosimetry and then... Break them! 😎😎 #breakingrocks #rocks

07.05.2025 19:46 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
A conceptual picture showing how CO2 injected into a saline aquifer is being trapped across different scales - from pore- to reservoir-scale - due to capillary forces and barriers in capillary pressure, arising from geological heterogeneities at these scales.

A conceptual picture showing how CO2 injected into a saline aquifer is being trapped across different scales - from pore- to reservoir-scale - due to capillary forces and barriers in capillary pressure, arising from geological heterogeneities at these scales.

Together with colleagues from @imperialcollegeldn.bsky.social we have tried to bring some clarity into the concept of capillary pinning during #CCS, considering the scales and heterogeneity in #geology www.sciencedirect.com/science/arti...

06.05.2025 08:14 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Harvard zwicht niet voor Donald Trump - Delta Harvard University weigert op de eisen van president Trump in te gaan en zet 2,2 miljard dollar aan overheidsgeld op het spel. De universiteit is niet van

Harvard University @harvard.edu weigert op de eisen van president Trump in te gaan en zet 2,2 miljard dollar aan overheidsgeld op het spel. De universiteit is niet van plan haar β€œonafhankelijkheid op te geven”.

17.04.2025 09:57 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Proud of our postdoc Milady Naderloo rocking his #DeepNL plenary presentation, arguing the lessons learnt from #InducedSeismicity should not go to waste in #energytransition related scenarios

15.04.2025 11:39 β€” πŸ‘ 4    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0
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β€˜Sluiting aardwetenschappen aan VU is precies de verkeerde boodschap’ - Delta De voorgenomen sluiting van de VU-afdeling aardwetenschappen is desastreus voor het geowetenschappelijk onderzoek en onderwijs. Dat schrijven TU-hoogleraren Timo Heimovaara en Sebastian Geiger namens ...

De voorgenomen sluiting van de VU-afdeling aardwetenschappen is desastreus voor het geowetenschappelijk onderzoek en onderwijs. Dat schrijven TU-hoogleraren Timo Heimovaara en @geoenergyprof.bsky.social namens hun afdeling geosciences and engineering in deze solidariteitsverklaring.

14.04.2025 17:18 β€” πŸ‘ 7    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0
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β€˜Closing VU earth sciences sends exactly the wrong message’ - Delta The planned closure of the VU Department of Earth Sciences is disastrous for geoscience research and education. That is what TU Delft professors Timo Heimovaara and Sebastian Geiger write in this soli...

Our open-ed statement in @tudelta.bsky.social, expressing solidarity with our colleagues and their students at the Vrije Universiteit of Amsterdam: delta.tudelft.nl/en/article/c... #geoscience #academia #science

14.04.2025 16:38 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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#GirlsDay today! On behalf of our Faculty @tudelftceg.bsky.social. We talked about earthquakes, geology & geothermal energy. We used straws to drill geologically layered clay, jumped and registered the "seismic wave" with @phyphox.org and of course we broke a rock! #breakingrocks #rocks πŸ€“πŸ˜Ž

10.04.2025 15:41 β€” πŸ‘ 7    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
The Vrije Universiteit of Amsterdam (VU) announced the decision to close its earth sciences department & cut 42 jobs as part of a wider measure to save €60M. The BSc degree in earth sciences will be discontinued.
We want to express our solidarity with our colleagues & the students at the VU, as well as their families, who face unprecedented uncertainties about their future. Our thoughts are with them.
These cuts are not only devastating for the affected staff & students. They will have major consequences for geoscience research & teaching in the Netherlands & beyond. Geoscience in the Netherlands is highly respected around the world by industry & academia alike. This respect is firmly grounded in the collaborative, complementary & internationalised approach to research & teaching across the Netherlands.
Losing a crucial part of the Dutch geoscience knowledge base at the VU will weaken the international standing of the Netherlands in the broader field of earth & geosciences, not only putting innovation at risk in a time where we can ill-afford this, but also reducing the number of urgently needed graduates. 
Geosciences underpin many of the solutions that we need to tackle some of the most severe challenges humanity faces: combating climate change, access to clean water, energy security & energy transition, sustainable sourcing of critical raw materials, understanding the impact of environmental change, or mitigating the risks of natural hazards. 
While we can debate how we can better communicate the importance of geosciences to increase student numbers, closing the earth science department at the VU sends the wrong message: that geosciences are expendable, at a time when they are needed more than ever. 
Only through cooperation & solidarity, not only in the field of geosciences & not only in the Netherlands, universities will be able to push back against government cuts & anti-science politics that threaten to inflict potentially devastating damages to our society.

The Vrije Universiteit of Amsterdam (VU) announced the decision to close its earth sciences department & cut 42 jobs as part of a wider measure to save €60M. The BSc degree in earth sciences will be discontinued. We want to express our solidarity with our colleagues & the students at the VU, as well as their families, who face unprecedented uncertainties about their future. Our thoughts are with them. These cuts are not only devastating for the affected staff & students. They will have major consequences for geoscience research & teaching in the Netherlands & beyond. Geoscience in the Netherlands is highly respected around the world by industry & academia alike. This respect is firmly grounded in the collaborative, complementary & internationalised approach to research & teaching across the Netherlands. Losing a crucial part of the Dutch geoscience knowledge base at the VU will weaken the international standing of the Netherlands in the broader field of earth & geosciences, not only putting innovation at risk in a time where we can ill-afford this, but also reducing the number of urgently needed graduates. Geosciences underpin many of the solutions that we need to tackle some of the most severe challenges humanity faces: combating climate change, access to clean water, energy security & energy transition, sustainable sourcing of critical raw materials, understanding the impact of environmental change, or mitigating the risks of natural hazards. While we can debate how we can better communicate the importance of geosciences to increase student numbers, closing the earth science department at the VU sends the wrong message: that geosciences are expendable, at a time when they are needed more than ever. Only through cooperation & solidarity, not only in the field of geosciences & not only in the Netherlands, universities will be able to push back against government cuts & anti-science politics that threaten to inflict potentially devastating damages to our society.

A statement of solidarity with our colleagues and their students from the Department of Earth Sciences at the Vrije Universiteit Amsterdam #geoscience #academia #science #earthscience #climatechange #energytransition βš’οΈπŸ§ͺπŸ§¬πŸ’‘πŸ”Œ

10.04.2025 15:18 β€” πŸ‘ 24    πŸ” 13    πŸ’¬ 3    πŸ“Œ 0

Another excellent and insightful summary on the #netzero benefits (including the financial benefits) in the UK by @drsimevans.carbonbrief.org from @carbonbrief.org πŸ”½

09.04.2025 09:29 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

A beautiful and passionate inaugural lecture by our colleague Hadi Hajibeygi ⬇️

05.04.2025 10:07 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Amidst all terrible news, I am sad that here it is not better. Today the VU Amsterdam announced they'll cut Earth Sciences, and fire 39 staff. 130 students are left to figure out how to finish, and an unknown number of PhDs lose their supervisors. My heart goes out to my colleagues 😳πŸ˜₯

03.04.2025 19:42 β€” πŸ‘ 90    πŸ” 34    πŸ’¬ 2    πŸ“Œ 5
A cycling path at TU Delft's campus flanked by blossoming trees and beneath a clear blue sky at which the sun is starting to set, indicating that spring isthr corner just aeo

A cycling path at TU Delft's campus flanked by blossoming trees and beneath a clear blue sky at which the sun is starting to set, indicating that spring isthr corner just aeo

Spring is in the air at TU Delft β˜€οΈπŸŒΌπŸŒΈπŸŒ»

27.03.2025 18:29 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Me too πŸ”½

25.03.2025 20:57 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Here's Jesse and Parvin taking a moment before the conference starts to check out the flowers! The right season to come visit us is starting πŸ₯° from now until mid-May the flower fields are blooming. Always good to take a moment with nature to recharge β˜€οΈπŸŒ·

21.03.2025 08:18 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Columbia Yields to Trump in Battle Over Federal Funding Columbia’s agreement is a significant moment in the intensifying battle between Trump and elite universities.

RIP academic freedom. This is a very sad day for academia in America.

21.03.2025 21:25 β€” πŸ‘ 731    πŸ” 210    πŸ’¬ 40    πŸ“Œ 22
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For those of you who are Tired Of All This Shit, we bring you:

The relationship between volcanism and the invention of the bicycle!

We made this clip, with @vanhinsbergen.bsky.social, for last year's Tour de France stage over the Cantal Volcano, and its highest remaining peak, Puy Mary ❀️🀠

20.03.2025 07:03 β€” πŸ‘ 109    πŸ” 36    πŸ’¬ 2    πŸ“Œ 4
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Campus is starting to blossom! Thanks to a bike detour I ran into the first trees bursting into full song this morning

17.03.2025 14:15 β€” πŸ‘ 6    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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First trip after maternity leave for Anne, together with @entelakane.bsky.social, Annemarie and Ilshat we visit the Geothermal Alliance Bavaria in Munich, with a special site visit to a local #geothermal plants 😁😁

13.03.2025 14:17 β€” πŸ‘ 4    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
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This is a great illustration of what the new energy order looks like:

➑️ large to small
➑️ centralised to decentralised
➑️ large grids to microgrids
➑️ one-directional to bi-directional
➑️ passive consumers to active prosumers

Of course simplified & highly stylised but it shows the direction of travel.

06.03.2025 11:39 β€” πŸ‘ 98    πŸ” 29    πŸ’¬ 0    πŸ“Œ 3
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Stunning new visualization of global temperatures since 1940, from @hausfath.bsky.social

www.theclimatebrink.com/p/visualizin...

05.03.2025 20:36 β€” πŸ‘ 210    πŸ” 128    πŸ’¬ 4    πŸ“Œ 7
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Impact of Sedimentological Heterogeneity on Subsurface Storage in Net-Transgressive, Shallow-Marine Sandstones: Cliff House Sandstone, New Mexico, USA | Geoenergy Net-transgressive, shallow-marine sandstone reservoirs overlain by thick mudstone seals are prime candidates for storage of CO2, H2 and thermal energy. Although these reservoirs have high net-to-gross...

🚨Another new #openaccess papers discussing the connection between multi-scale #geology and fluid flow for low-carbon #energy applications such as #CCS and #geothermal. Once again very enjoyable research with colleagues and friends from Imperial College London www.lyellcollection.org/doi/full/10....

05.03.2025 12:51 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Screenshot of text from a Nature Ecology & Evolution Editorial entitled "Deep cuts"

Screenshot of text from a Nature Ecology & Evolution Editorial entitled "Deep cuts"

In our latest Editorial we discuss the continuing damage being done to US science, and its impact on researchers and the environment πŸ‘‡

Deep cuts: www.nature.com/articles/s41...

03.03.2025 14:34 β€” πŸ‘ 248    πŸ” 124    πŸ’¬ 3    πŸ“Œ 4

As one of the signatories of the brilliant open letter by @scurry.bsky.social I am dismayed by this decision, but sadly also not entirely surprised. If we don't stand up for our values and science in this day and age, especially if we're privileged to do so, when then?

03.03.2025 23:22 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Any lab can only be so good as their technicians... Last week our rock saw broke down. Today our invaluable technician Marc is fixing it so probably tomorrow it is already working again. Our MScs, PhDs and postdocs are not much delayed. Yay for Marc! (And the rest of our awesome tech team!)

03.03.2025 12:13 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

@geoenergyprof is following 20 prominent accounts