Jacek Szczygieł

Last week, I had the pleasure of organizing in the #Tatra Mts. 59 Polish speleological symposium. Inspiring invited lectures, great talks, and most importantly, discussions in the field where we shared the last decade of our research😁I am happy we could award 4 #ECR grants

There are still a few weeks left to apply for the postdoc position in my @NCN_PL project.👇 You can model using #FEM OR you're interested in #seismology OR structural resistance to #seismic waves? Help me test some controversial hypotheses! Let's break some rocks and calculate how they break :)

Not only do speleothems make caves enjoyable! Textbook hypogene morphology in Brzozowa #cave in the Polish Jura upland: cupolas, feeders, ghostrock.

📢Fresh off the press
Unexpected latest Pleistocene W-dipping reverse fault-slip in the Maritimes Alps (SE France)—Insights from passage offset in Mescla Cave
Now available in J. Of Quaternary Science

onlinelibrary.wiley.com/doi/10.1002/...
All started from discussion on PATAdays22
@paleoseismology

#climbing … because even the most passionate caver needs a sun ☀️ from time to time😉
Byczkowski route on the western face of Kościelec, #Tatra

Discovering unknown… love it
August in the Northern Calcarouse Alps, the Göll massif.
Oh, btw, the new #cave passages are on the N-S #fault which I described here: doi.org/10.2113/2024...

Assistant Professor in the group of research staff (post-doc) 51/2024/NA/WNP/INoZ/pd/02​, Uniwersytet Śląski, Sosnowiec Job offer Assistant Professor in the group of research staff (post-doc) 51/2024/NA/WNP/INoZ/pd/02​, Uniwersytet Śląski, Sosnowiec

We're hiring! 2-year #PostDoc in #speleothem #seismic vulnerability from FEM modeling to enhance @paleoseismicity.bsky.social of Hellenides (Greece)
Part of @ncn.gov.pl project at the University of Silesia, Poland
Deadline: 31th October 2025
Details 👇

skk.erecruiter.pl/Offer.aspx?o...

Here is the 50-day free access link
authors.elsevier.com/c/1lUJp8RViAsze
In contrast to previouse research, we show that even small #glaciers (2km long) can produce #microtextures on quartz #grains; hence, even small glaciers can be “caught” in depositional record via #SEM and reconstructed.

#EarthquakeReport for M8.8 #Earthquake offshore of #Kamchatka #Russia

been busy responding and still doing that
aftershock pattern matches 1952 M9 rupture patch
'24 and 20 July '25 foreshocks

see report to learn more about 1952:
earthjay.com?p=12053

earthquake.usgs.gov/earthquakes/...

M8.8 earthquake strikes offshore Kamchatka A dangerous subduction megathrust ruptures once again

⚒️ 🧪

A M8.8 earthquake just ruptured the subduction zone offshore Russia’s Kamchatka peninsula. This is one of the world’s truly huge earthquakes, and a triggered tsunami is currently traveling across the Pacific ocean.

This same fault ruptured on July 20th in a M7.4, and last August in a M7.1.

Visiting Cork County 🇮🇪☘️ was a real structural #geology feast🤩
I’ll start with #boudinage, the extensional structure of a rigid layer is stretched and deformed between less competent surroundings.

Shanvallybeg Beach near Bantry

When #cave columns are compressed and a bunch of fallen stalactites are lying around, one knows something more than just a gravity breakdown happened 😁
Hunting for #earthquakes traces in caves on Crete with @christospennos.bsky.social
@ncn.gov.pl
@paleoseismicity.bsky.social

You want to see some sexy #cleavage on the beach?
Crosshaven, Cork County 🇮🇪
#fridayfold

Super proud of my first PhD student Dawid Siemek, critically thinking young scientist who just published “Size does not matter: Glacial record on quartz grains from Pleistocene #glacial deposits in Tatra Mts. (Western Carpathians) revealed by #SEM”

www.sciencedirect.com/science/arti...

Here’s some action 😉
A bit cringe #gopro clip from the fieldwork in Dadulas #cave nearby Siti #fault zone in eastern Crete: looking for the broken #speleothems
@ncn.gov.pl @christospennos.bsky.social

Co-seismic offset or co-goat-running exposure 🧐
Western Giouchtas Fault, Heraklion Basin, Crete
@christospennos.bsky.social and 🐐for scale
@ncn.gov.pl

2h on Crete and already such a beauty 🤩
Surface rupture of the Lastros Fault doi.org/10.1016/j.te...
We are heading even further east to look for more of those that have not been studied, and of course look for some deformation in caves
@ncn.gov.pl @paleoseismicity.bsky.social

Polish polish science @ncn.gov.pl

Ohh there is… In Greece is the Drama fault wich is suspected to damage Drama City in 1829

In my @ncn.gov.pl project on #coseismic #cave deformation in Greece, we use cutting-edge technology 💪

Peer review? More like pine review

84 caves in 6 weeks from easy walking through vertical squeezes to crawling in bugs. All between teaching, supervising graduates, admin, and PI duties. Quite a logistics🥵 Today I finished #fieldwork for #antropopression on #cave in #Nature2000 areas of the Polish Jura. I’m tired

On today's #FridayFault I found beautiful slickensides in the Między Sosnami Cave, Polish Jura. The #cave has a #gravitational origin, despite being in limestone. Few generations of broken flowstone imply its repeated reactivation. With <50km from LGM my first guess is forebulge

#TheLastOfUs moment during today's fieldwork in Polish Jura Uppland #cave. #Moth with #fungus growing out of its head, and there was more of it in a few caves in the vicinity...

fruitful week in the #caves of the Drama Basin, Greece. We found some bedrock deformations, broken speleothems, and massive collapses. Now it's time to deal with the samples. 24 samples from 5 caves, sounds like a promising start to Bahadir's PhD project
@ncn.gov.pl
@paleoseismicity.bsky.social

Finally, after a 6-month visa battle, we started collecting data for Bahadir's PhD, part of the Sonata BIS @NCN_PL project. In Peristerionas #cave, 500m from the Drama Basin #fault🇬🇷, we measured and sampled bunch of open #fractures and destroyed (sheared and compressed) speleothems

We tried yesterday, with my new PhD student Bahadir, our new fancy equipment: a lidar scanner for cavers built in the Polish Academy of Science github.com/JanuszBedkowsk…
IT IS BRILLIANT INVENTION!
@ncn.gov.pl

Today, I visited Wielkanocna (Easter) Cave, the first #cave pit I ever descent on the rope back in …May 1993
Polish Jura

Confusing speleogenesis of gravitational #cave in the karstic region; Polish Jura.

“Minecraft-like” cliff 😂 with impressive Kinchkha Waterfalls in upper Okatse Canyon; Georgia 🇬🇪