Prof Sebastian Geiger
@geoenergyprof.bsky.social
340 followers 240 following 110 posts
Professor for Sustainable Geoenergy at TU Delft and passionate 🇪🇺, conducting #research in #geoenergy, #geoscience, & #energytransition (views are my own)
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geoenergyprof.bsky.social
Well, this was the last straw that caused me to close my account on the other site. So let's restart here. What I am passionate about (in no particular order)? Sustainability, a just energy transition, geothermal, CCS, DEI, learning from others, my students, my family, our dog, cycling, outdoors
A family with a dog Dog with a cuddly toy Double rainbow in the Scottish Lowlands Bicycle in a mountain valley
Reposted by Prof Sebastian Geiger
tudelftceg.bsky.social
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.
👉 www.tudelft.nl/en/stories/a...
geoenergyprof.bsky.social
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...
Energi Simulation continues geoenergy partnership with Delft University
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geoenergyprof.bsky.social
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 ⚒️💡🔋
Reposted by Prof Sebastian Geiger
geohenning.bsky.social
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. 🧪⚒️ #OTD

www.hemmings.com/stories/mt-s...
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.
geoenergyprof.bsky.social
Thank you Tanja for this letter. I have already written to my MP recently but will follow your example and write another letter.
Reposted by Prof Sebastian Geiger
rockdeftud.bsky.social
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
geoenergyprof.bsky.social
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...
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.
Reposted by Prof Sebastian Geiger
tudelta.bsky.social
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 “onafhankelijkheid op te geven”.
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
delta.tudelft.nl
Reposted by Prof Sebastian Geiger
rockdeftud.bsky.social
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
Reposted by Prof Sebastian Geiger
tudelta.bsky.social
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.
‘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 ...
delta.tudelft.nl
Reposted by Prof Sebastian Geiger
rockdeftud.bsky.social
#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 🤓😎
geoenergyprof.bsky.social
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 ⚒️🧪🧬💡🔌
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.
geoenergyprof.bsky.social
Another excellent and insightful summary on the #netzero benefits (including the financial benefits) in the UK by @drsimevans.carbonbrief.org from @carbonbrief.org 🔽
drsimevans.carbonbrief.org
NEW: Official advisers CCC say UK shld cut emissions 87% by 2040

⚖️Net cost of net-zero 73% less than thought
💷Total cost to 2050 = £108bn (~£4bn/yr, 0.2% GDP)
🏡🚗H’hold energy/fuel bills to fall £1,400
🔌Electrification is key

THREAD + charts

www.carbonbrief.org/...

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geoenergyprof.bsky.social
A beautiful and passionate inaugural lecture by our colleague Hadi Hajibeygi ⬇️
rockdeftud.bsky.social
The ebb and flow of life... Today attending the inaugural lecture of esteemed and appreciated colleague Prof. Hadi Hajibeygi, professor of Geo Energy and Solid and Fluid Mechanics
Reposted by Prof Sebastian Geiger
rockdeftud.bsky.social
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 😳😥
geoenergyprof.bsky.social
Spring is in the air at TU Delft ☀️🌼🌸🌻
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
Reposted by Prof Sebastian Geiger
rockdeftud.bsky.social
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 🥰 from now until mid-May the flower fields are blooming. Always good to take a moment with nature to recharge ☀️🌷
Reposted by Prof Sebastian Geiger
geotdf.bsky.social
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 ❤️🤠
Reposted by Prof Sebastian Geiger
rockdeftud.bsky.social
Campus is starting to blossom! Thanks to a bike detour I ran into the first trees bursting into full song this morning
Reposted by Prof Sebastian Geiger
rockdeftud.bsky.social
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 😁😁
Reposted by Prof Sebastian Geiger
janrosenow.bsky.social
This is a great illustration of what the new energy order looks like:

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

Of course simplified & highly stylised but it shows the direction of travel.
Reposted by Prof Sebastian Geiger
markgongloff.bsky.social
Stunning new visualization of global temperatures since 1940, from @hausfath.bsky.social

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