Norbert Marwan
@pucicu.de
cave researcher, scientist at PIK, nonlinear data analysis, underwater rugby player
https://www.pik-potsdam.de/~marwan
https://www.pik-potsdam.de/~marwan
Reposted by Norbert Marwan
The #UN today proclaimed The International Day of Caves and Karst! To be celebrated 13th September 2026 for the first time! 😍 @mariabox.bsky.social @pucicu.de @olakwiecien3.bsky.social
unesdoc.unesco.org/ark:/48223/p...
unesdoc.unesco.org/ark:/48223/p...
International Day of Caves and Karst
UNESCO Digital Library
unesdoc.unesco.org
November 12, 2025 at 10:22 PM
The #UN today proclaimed The International Day of Caves and Karst! To be celebrated 13th September 2026 for the first time! 😍 @mariabox.bsky.social @pucicu.de @olakwiecien3.bsky.social
unesdoc.unesco.org/ark:/48223/p...
unesdoc.unesco.org/ark:/48223/p...
Reposted by Norbert Marwan
This month, CTCS (IIT Madras) & @pik-potsdam.bsky.social present a webinar:
📢: Can noise be used to realize the desired dynamics?
🎙️: Prof. Balakumar Balachandran, @univofmaryland.bsky.social, USA
📅: November 24| ⏰20:30 IST | 16:00 CET
🔗: us06web.zoom.us/webinar/regi...
#Complexsystems #phd
📢: Can noise be used to realize the desired dynamics?
🎙️: Prof. Balakumar Balachandran, @univofmaryland.bsky.social, USA
📅: November 24| ⏰20:30 IST | 16:00 CET
🔗: us06web.zoom.us/webinar/regi...
#Complexsystems #phd
November 12, 2025 at 1:10 PM
This month, CTCS (IIT Madras) & @pik-potsdam.bsky.social present a webinar:
📢: Can noise be used to realize the desired dynamics?
🎙️: Prof. Balakumar Balachandran, @univofmaryland.bsky.social, USA
📅: November 24| ⏰20:30 IST | 16:00 CET
🔗: us06web.zoom.us/webinar/regi...
#Complexsystems #phd
📢: Can noise be used to realize the desired dynamics?
🎙️: Prof. Balakumar Balachandran, @univofmaryland.bsky.social, USA
📅: November 24| ⏰20:30 IST | 16:00 CET
🔗: us06web.zoom.us/webinar/regi...
#Complexsystems #phd
Reposted by Norbert Marwan
...das bedeutet: Wer das Pariser Klimaabkommen aufgibt, gibt Hamburg auf... New York, Shanghai, Kalkutta,...
November 7, 2025 at 6:17 PM
...das bedeutet: Wer das Pariser Klimaabkommen aufgibt, gibt Hamburg auf... New York, Shanghai, Kalkutta,...
Reposted by Norbert Marwan
Wissenschaft ist kein Wunschkonzert der Reichen und Mächtigen, die missliebige Forschung - etwa die Klimaforschung - am liebsten abschaffen und unterdrücken wollen. Deshalb habe ich das Hamburger Manifest unterschrieben. Es ist auch ein Appell an Forscherkollegen.
Hier ist es: openpetition.de/!hcbrf
Hier ist es: openpetition.de/!hcbrf
October 28, 2025 at 10:47 AM
Wissenschaft ist kein Wunschkonzert der Reichen und Mächtigen, die missliebige Forschung - etwa die Klimaforschung - am liebsten abschaffen und unterdrücken wollen. Deshalb habe ich das Hamburger Manifest unterschrieben. Es ist auch ein Appell an Forscherkollegen.
Hier ist es: openpetition.de/!hcbrf
Hier ist es: openpetition.de/!hcbrf
Reposted by Norbert Marwan
Interested in #uranium isotopes and their potential use as #redox proxy in karst systems? Looking for a PhD project or know someone who might? DM me for more details! ☢️ @mariabox.bsky.social @pucicu.de @bgs.ac.uk @tinyicybubbles.bsky.social @olakwiecien3.bsky.social
October 29, 2025 at 8:44 AM
Interested in #uranium isotopes and their potential use as #redox proxy in karst systems? Looking for a PhD project or know someone who might? DM me for more details! ☢️ @mariabox.bsky.social @pucicu.de @bgs.ac.uk @tinyicybubbles.bsky.social @olakwiecien3.bsky.social
Reposted by Norbert Marwan
Joint #recurrence_plot used to investigate connectivity within human brain's connectome: link.springer.com/article/10.1...
K-operator for Modelling Neurodegeneration: Simulations, fMRI Application, Eigenvalue Analysis and Recurrence Plots - Journal of Medical Systems
The brain network damage provoked by a neurological disease can be modelled as the result of the action of an operator, K, acting on the brain, inspired by physics. Here, we explore the matrix formula...
link.springer.com
October 27, 2025 at 9:12 AM
Joint #recurrence_plot used to investigate connectivity within human brain's connectome: link.springer.com/article/10.1...
Another study using the novel K-operator concept by @mariamannone@fediscience.org just published in the Journal of Medical Systems link.springer.com/article/10.1...
K-operator for Modelling Neurodegeneration: Simulations, fMRI Application, Eigenvalue Analysis and Recurrence Plots - Journal of Medical Systems
The brain network damage provoked by a neurological disease can be modelled as the result of the action of an operator, K, acting on the brain, inspired by physics. Here, we explore the matrix formula...
link.springer.com
October 27, 2025 at 9:11 AM
Another study using the novel K-operator concept by @mariamannone@fediscience.org just published in the Journal of Medical Systems link.springer.com/article/10.1...
Reposted by Norbert Marwan
Aktuell liegen im Berner Oberland auf 2000 m 10 bis teils >30 cm Schnee (Karte: @slfdavos.bsky.social). Zwischendurch geben die Wolken den Blick auf den Sägistalsee frei (Bild via faulhorn.roundshot.com ): Die Landschaft ist wunderschön weiss und der See beginnt vom Rand her langsam zuzufrieren...
October 26, 2025 at 10:33 AM
Aktuell liegen im Berner Oberland auf 2000 m 10 bis teils >30 cm Schnee (Karte: @slfdavos.bsky.social). Zwischendurch geben die Wolken den Blick auf den Sägistalsee frei (Bild via faulhorn.roundshot.com ): Die Landschaft ist wunderschön weiss und der See beginnt vom Rand her langsam zuzufrieren...
Next result from our fruitful collaboration with UFPR in Curitiba: Effect of sampling size in recurrence microstates analysis
authors.elsevier.com/c/1l~sR1M2-2...
authors.elsevier.com/c/1l~sR1M2-2...
authors.elsevier.com
October 24, 2025 at 8:35 PM
Next result from our fruitful collaboration with UFPR in Curitiba: Effect of sampling size in recurrence microstates analysis
authors.elsevier.com/c/1l~sR1M2-2...
authors.elsevier.com/c/1l~sR1M2-2...
Reposted by Norbert Marwan
Wenn Friedrich Merz sich auch nur ansatzweise interessieren würde dafür, was gut für meine Töchter ist, nähme er die Klimakrise ernst, würde den Verbrennungsmotor in Rente schicken, Überreiche fair besteuern und nie mehr AfD-Parolen nachbellen.
October 20, 2025 at 5:45 PM
Wenn Friedrich Merz sich auch nur ansatzweise interessieren würde dafür, was gut für meine Töchter ist, nähme er die Klimakrise ernst, würde den Verbrennungsmotor in Rente schicken, Überreiche fair besteuern und nie mehr AfD-Parolen nachbellen.
This month's CTCS webinar:
Prof. Dibakar Ghosh (Indian Statistical Institute, Kolkata)
Coexisting dynamics of swarming and synchrony in complex systems
Date: Oct 27, 2025
Tim: 8:30 PM IST/ 4:00PM CET
Zoom link: us06web.zoom.us/webinar/regi...
Webinar ID: 872 4023 8715
Prof. Dibakar Ghosh (Indian Statistical Institute, Kolkata)
Coexisting dynamics of swarming and synchrony in complex systems
Date: Oct 27, 2025
Tim: 8:30 PM IST/ 4:00PM CET
Zoom link: us06web.zoom.us/webinar/regi...
Webinar ID: 872 4023 8715
October 21, 2025 at 6:41 PM
This month's CTCS webinar:
Prof. Dibakar Ghosh (Indian Statistical Institute, Kolkata)
Coexisting dynamics of swarming and synchrony in complex systems
Date: Oct 27, 2025
Tim: 8:30 PM IST/ 4:00PM CET
Zoom link: us06web.zoom.us/webinar/regi...
Webinar ID: 872 4023 8715
Prof. Dibakar Ghosh (Indian Statistical Institute, Kolkata)
Coexisting dynamics of swarming and synchrony in complex systems
Date: Oct 27, 2025
Tim: 8:30 PM IST/ 4:00PM CET
Zoom link: us06web.zoom.us/webinar/regi...
Webinar ID: 872 4023 8715
😃 Our PIKART catalog paper (dx.doi.org/10.1029/2024...) has made it into youtube: youtu.be/fhWLv4xo4fE?...
What we know about Atmospheric Rivers: the latest peer-reviewed science…
YouTube video by Paul Beckwith
youtu.be
October 8, 2025 at 6:14 PM
😃 Our PIKART catalog paper (dx.doi.org/10.1029/2024...) has made it into youtube: youtu.be/fhWLv4xo4fE?...
Reposted by Norbert Marwan
Here‘s a rare and excellent career opportunity for outstanding physical oceanographers at the Potsdam Institute (PIK) and the University of Potsdam, in beautiful surroundings just outside Berlin. Tell qualified friends or colleagues! 🌊
www.nature.com/naturecareer...
www.nature.com/naturecareer...
Full Professorship (W3) for Physics of the Oceans - Potsdam-Mittelmark, Brandenburg (DE) job with Universität Potsdam | 12844582
Founded in 1991, the University of Potsdam has firmly established itself in the scientific landscape and has become an outstanding economic factor ...
www.nature.com
September 9, 2025 at 10:08 AM
Here‘s a rare and excellent career opportunity for outstanding physical oceanographers at the Potsdam Institute (PIK) and the University of Potsdam, in beautiful surroundings just outside Berlin. Tell qualified friends or colleagues! 🌊
www.nature.com/naturecareer...
www.nature.com/naturecareer...
Reposted by Norbert Marwan
Im französischen Fernsehen haben sie den CSU-Chef Markus Söder analysiert - als "Gastro-Populisten". Und manchmal hilft der Blick von außen, um eine PR-Strategie besser zu verstehen. Sehenswert!
Quelle:
www.arte.tv/de/videos/12...
Quelle:
www.arte.tv/de/videos/12...
September 25, 2025 at 11:26 AM
Im französischen Fernsehen haben sie den CSU-Chef Markus Söder analysiert - als "Gastro-Populisten". Und manchmal hilft der Blick von außen, um eine PR-Strategie besser zu verstehen. Sehenswert!
Quelle:
www.arte.tv/de/videos/12...
Quelle:
www.arte.tv/de/videos/12...
Movie about the expedition in Angola with Speleoclub Berlin participation: "Decoding Climate from the Caves of Angola" youtu.be/SxA75t1AlKs?...
Decoding Climate from the Caves of Angola
YouTube video by American Museum of Natural History
youtu.be
September 24, 2025 at 8:01 PM
Movie about the expedition in Angola with Speleoclub Berlin participation: "Decoding Climate from the Caves of Angola" youtu.be/SxA75t1AlKs?...
After digitising our recent mappings and surveys, we can now report that we have finally surpassed the 10 km milestone of mapped caves in the Sägistal! 😃
Very successful cave week with a lot of newly discovered an mapped cave meters!
September 24, 2025 at 3:33 PM
After digitising our recent mappings and surveys, we can now report that we have finally surpassed the 10 km milestone of mapped caves in the Sägistal! 😃
The deadline for the EPJ ST Special Issue: Unraveling Spatio-Temporal Dynamics in Stochastic and Complex Systems is approaching! (Oct 31, 2025)
epjst.epj.org/epjst-open-c...
epjst.epj.org/epjst-open-c...
EPJ Special Topics (EPJ ST)
The European Physical Journal Special Topics (EPJ-Special Topics) is devoted to the rapid and timely publication of topical issues in all fields pertaining to the pure and applied physical sciences
epjst.epj.org
September 24, 2025 at 3:23 PM
The deadline for the EPJ ST Special Issue: Unraveling Spatio-Temporal Dynamics in Stochastic and Complex Systems is approaching! (Oct 31, 2025)
epjst.epj.org/epjst-open-c...
epjst.epj.org/epjst-open-c...
Did you know that at least half a million people are living on landslides and have expanded their total built-up area by 12% over the last 30 years? Read more in our study on large landslides in @agu.org Geophys Res Lett doi.org/10.1029/2025...
Exposure to Large Landslides in Cities Outpaces Urban Growth
We identify 1,085 large (>0.1 km2) urban landslides inhabited by half a million people in total Built-up areas on large landslides have doubled from 1985 to 2015 Population trends of adjacent mo...
doi.org
September 24, 2025 at 3:02 PM
Did you know that at least half a million people are living on landslides and have expanded their total built-up area by 12% over the last 30 years? Read more in our study on large landslides in @agu.org Geophys Res Lett doi.org/10.1029/2025...
Cool! It even mentions our study "Visual Analytics for Correlation-Based Comparison of Time Series Ensembles"
doi.org/10.1111/cgf....
doi.org/10.1111/cgf....
September 24, 2025 at 2:57 PM
Cool! It even mentions our study "Visual Analytics for Correlation-Based Comparison of Time Series Ensembles"
doi.org/10.1111/cgf....
doi.org/10.1111/cgf....
Reposted by Norbert Marwan
Accelerated bioclimatic warming in Poland (1951–2023) was analyzed using #recurrence_plot analysis. A phase transition in thermal stress patterns was detected around 1980–1990, revealing increased heat stress and decreased cold stress, with 1990 marking a remarkable shift. doi.org/10.1109/TGRS...
A Scalable and Automated Recurrence Plot Method for Detecting Climate Change: The Case of the UTCI Bioclimatic Index in Central Europe
Recent decades have brought increasing effects of climate change and variation. Climate changes, indicated by various bioclimatic indices, influence the functioning of living organisms, including huma...
doi.org
September 23, 2025 at 7:28 AM
Accelerated bioclimatic warming in Poland (1951–2023) was analyzed using #recurrence_plot analysis. A phase transition in thermal stress patterns was detected around 1980–1990, revealing increased heat stress and decreased cold stress, with 1990 marking a remarkable shift. doi.org/10.1109/TGRS...
This month's CTCS webinar will be delivered by Dr. Frank Hellmann from our institute @pik-potsdam.bsky.social
Title: Dynamics of modern power grids - A complex systems perspective
Time: September 29, 2025, 16:00 CEST.
us06web.zoom.us/webinar/regi...
Title: Dynamics of modern power grids - A complex systems perspective
Time: September 29, 2025, 16:00 CEST.
us06web.zoom.us/webinar/regi...
September 22, 2025 at 3:49 PM
This month's CTCS webinar will be delivered by Dr. Frank Hellmann from our institute @pik-potsdam.bsky.social
Title: Dynamics of modern power grids - A complex systems perspective
Time: September 29, 2025, 16:00 CEST.
us06web.zoom.us/webinar/regi...
Title: Dynamics of modern power grids - A complex systems perspective
Time: September 29, 2025, 16:00 CEST.
us06web.zoom.us/webinar/regi...
Reposted by Norbert Marwan
Challenges and perspectives in recurrence analyses of event time series dx.doi.org/10.3389/fams...
Frontiers | Challenges and perspectives in recurrence analyses of event time series
The analysis of event time series is in general challenging. Most time series analysis tools are limitedfor the analysis of this kind of data. Recurrence ana...
dx.doi.org
September 22, 2025 at 2:51 PM
Challenges and perspectives in recurrence analyses of event time series dx.doi.org/10.3389/fams...
Reposted by Norbert Marwan
Trends in recurrence analysis of dynamical systems dx.doi.org/10.1140/epjs...
Trends in recurrence analysis of dynamical systems - The European Physical Journal Special Topics
The last decade has witnessed a number of important and exciting developments that had been achieved for improving recurrence plot-based data analysis and to widen its application potential. We will g...
dx.doi.org
September 21, 2025 at 7:36 PM
Trends in recurrence analysis of dynamical systems dx.doi.org/10.1140/epjs...
We summarised current trends in #recurrence_plot analysis of dynamical systems dx.doi.org/10.1140/epjs...
Trends in recurrence analysis of dynamical systems - The European Physical Journal Special Topics
The last decade has witnessed a number of important and exciting developments that had been achieved for improving recurrence plot-based data analysis and to widen its application potential. We will g...
dx.doi.org
September 21, 2025 at 7:35 PM
We summarised current trends in #recurrence_plot analysis of dynamical systems dx.doi.org/10.1140/epjs...