Jacek Szczygieł
@speleojacek.bsky.social
Geologist at Uni. Silesia in Katowice (Poland) focus on active tectonics, mountains geomorphology, speleology
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
October 23, 2025 at 10:01 AM
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 :)
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...
Part of @ncn.gov.pl project at the University of Silesia, Poland
Deadline: 31th October 2025
Details 👇
skk.erecruiter.pl/Offer.aspx?o...
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
skk.erecruiter.pl
October 7, 2025 at 7:07 PM
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.
September 28, 2025 at 2:05 PM
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
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
https://onlinelibrary.wiley.com/doi/10.1002/jq…
September 5, 2025 at 6:36 PM
📢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
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
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...
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...
September 3, 2025 at 4:23 PM
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...
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...
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...
Part of @ncn.gov.pl project at the University of Silesia, Poland
Deadline: 31th October 2025
Details 👇
skk.erecruiter.pl/Offer.aspx?o...
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
skk.erecruiter.pl
August 13, 2025 at 3:48 PM
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...
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.
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.
July 31, 2025 at 6:24 AM
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.
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.
Reposted by Jacek Szczygieł
#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/...
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/...
July 30, 2025 at 8:26 AM
#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/...
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/...
Reposted by Jacek Szczygieł
⚒️ 🧪
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.
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.
M8.8 earthquake strikes offshore Kamchatka
A dangerous subduction megathrust ruptures once again
earthquakeinsights.substack.com
July 30, 2025 at 4:05 AM
⚒️ 🧪
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.
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
I’ll start with #boudinage, the extensional structure of a rigid layer is stretched and deformed between less competent surroundings.
Shanvallybeg Beach near Bantry
July 29, 2025 at 12:14 PM
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
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
Hunting for #earthquakes traces in caves on Crete with @christospennos.bsky.social
@ncn.gov.pl
@paleoseismicity.bsky.social
July 26, 2025 at 6:55 PM
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
Hunting for #earthquakes traces in caves on Crete with @christospennos.bsky.social
@ncn.gov.pl
@paleoseismicity.bsky.social
July 25, 2025 at 3:57 PM
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...
www.sciencedirect.com/science/arti...
Page not found | ScienceDirect
The page you were looking for does not exist or was moved.
https://sciencedirect.com/science/articl…
July 24, 2025 at 7:54 AM
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...
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
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
July 23, 2025 at 7:46 AM
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
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
Western Giouchtas Fault, Heraklion Basin, Crete
@christospennos.bsky.social and 🐐for scale
@ncn.gov.pl
July 21, 2025 at 9:28 AM
Co-seismic offset or co-goat-running exposure 🧐
Western Giouchtas Fault, Heraklion Basin, Crete
@christospennos.bsky.social and 🐐for scale
@ncn.gov.pl
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
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
July 14, 2025 at 8:59 AM
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
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
In my @ncn.gov.pl project on #coseismic #cave deformation in Greece, we use cutting-edge technology 💪
July 10, 2025 at 5:20 AM
In my @ncn.gov.pl project on #coseismic #cave deformation in Greece, we use cutting-edge technology 💪
Peer review? More like pine review
July 3, 2025 at 3:02 PM
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
June 29, 2025 at 3:01 PM
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
June 6, 2025 at 5:50 PM
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...
June 5, 2025 at 6:02 PM
#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
@ncn.gov.pl
@paleoseismicity.bsky.social
June 2, 2025 at 10:07 AM
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
@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
May 29, 2025 at 5:10 PM
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