Norbert Marwan
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pucicu.de
Norbert Marwan
@pucicu.de
240 followers 86 following 220 posts

cave researcher, scientist at PIK, nonlinear data analysis, underwater rugby player

https://www.pik-potsdam.de/~marwan

Videos
Environmental science 23%
Physics 20%
Posts Replies Media Videos

Reposted by Norbert Marwan

alevermann.bsky.social
Prof. Anders Levermann, PhD @alevermann.bsky.social · 3d
...das bedeutet: Wer das Pariser Klimaabkommen aufgibt, gibt Hamburg auf... New York, Shanghai, Kalkutta,...

Reposted by Norbert Marwan

speleoseb.bsky.social
Seb Breitenbach @speleoseb.bsky.social · 12d
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

rahmstorf.bsky.social
Prof. Stefan Rahmstorf @rahmstorf.bsky.social · 13d
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

Reposted by Norbert Marwan

recurrence-plot.tk
Recurrence Plots @recurrence-plot.tk · 14d
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

pucicu.de
Norbert Marwan @pucicu.de · 14d
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

Reposted by Norbert Marwan

kryophil.bsky.social
kaltluftseen.ch @kryophil.bsky.social · 15d
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...

pucicu.de
Norbert Marwan @pucicu.de · 17d
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

pucicu.de
Norbert Marwan @pucicu.de · 20d
digitalcourage.de/blog/2025/ne...
Nein, wir sind nicht auf Instagram, TikTok & Co
Faschismus wird lauter, Demokratie kränkelt. Giergetriebene soziale Medien befeuern diese Trends. Wir sind ausgestiegen – und bauen im Fediverse
digitalcourage.de

pucicu.de
Norbert Marwan @pucicu.de · 20d
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

Reposted by Norbert Marwan, Philipp Sarasin

ruthe.de
Ralph Ruthe @ruthe.de · 21d
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.

pucicu.de
Norbert Marwan @pucicu.de · Oct 8
😃 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

Reposted by Norbert Marwan, Daniel Stein

volksverpetzer.de
Der Volksverpetzer @volksverpetzer.de · Sep 25
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...

pucicu.de
Norbert Marwan @pucicu.de · Sep 24
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

pucicu.de
Norbert Marwan @pucicu.de · Sep 24
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! 😃
pucicu.de Norbert Marwan @pucicu.de · Aug 25
Very successful cave week with a lot of newly discovered an mapped cave meters!

pucicu.de
Norbert Marwan @pucicu.de · Sep 24
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...
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

pucicu.de
Norbert Marwan @pucicu.de · Sep 24
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

pucicu.de
Norbert Marwan @pucicu.de · Sep 24
Cool! It even mentions our study "Visual Analytics for Correlation-Based Comparison of Time Series Ensembles"
doi.org/10.1111/cgf....

Reposted by Norbert Marwan

recurrence-plot.tk
Recurrence Plots @recurrence-plot.tk · Sep 23
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

pucicu.de
Norbert Marwan @pucicu.de · Sep 22
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...

Reposted by Norbert Marwan

recurrence-plot.tk
Recurrence Plots @recurrence-plot.tk · Sep 22
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

Reposted by Norbert Marwan

recurrence-plot.tk
Recurrence Plots @recurrence-plot.tk · Sep 21
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

pucicu.de
Norbert Marwan @pucicu.de · Sep 21
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

pucicu.de
Norbert Marwan @pucicu.de · Sep 21
Talking about my bibliographic studies on #recurrence_plot and recurrence quantification analyses at the 11th recurrence plot symposium in Mexico city dx.doi.org/10.1007/978-... symposium.recurrence-plot.tk

Reposted by Norbert Marwan

rahmstorf.bsky.social
Prof. Stefan Rahmstorf @rahmstorf.bsky.social · Sep 20
One of many many climate protests around the world today: in Potsdam with Luisa Neubauer!

Reposted by Norbert Marwan

risujith.bsky.social
Prof. R. I. Sujith @risujith.bsky.social · Sep 20
This month, CTCS (IIT Madras) & PIK present a webinar:
📢: Dynamics of modern power grids - A complex systems perspective
🎙️: Dr. Frank Hellman @various.complexities.eu, @pik-potsdam.bsky.social, Germany
📅: September 29 |⏰19:30 IST | 16:00 CEST,
🔗: us06web.zoom.us/webinar/regi...
#ComplexSystems #phd

Reposted by Norbert Marwan

der-postillon.com
Der Postillon 📯 @der-postillon.com · Sep 20
"Bild"-Zeitung muss künftig im Sondermüll entsorgt werden www.der-postillon.com/2021/09/bild...
"Bild"-Zeitung muss künftig im Sondermüll entsorgt werden
Berlin (dpo) - Nach Appellen von Experten ist heute die Abfallverzeichnis-Verordnung (AVV) ergänzt worden, die festlegt, wie Abfälle entsorgt werden m
www.der-postillon.com

Reposted by Norbert Marwan

isp-uv-es.bsky.social
Image and Signal Processing • ISP @isp-uv-es.bsky.social · Sep 19
👥 This week, we welcomed Tobias Braun, from the Institute for Earth System Science & Remote Sensing (Leipzig University).

🌏 During his talk today, he discussed the potential of complexity science to bridge the gap between synoptic processes and planetary-scale dynamics.

🙌 Thanks for visiting us!

Reposted by Norbert Marwan

recurrence-plot.tk
Recurrence Plots @recurrence-plot.tk · Sep 19
During critical transitions in complex systems, #recurrence_plot revealed recurrence condensation, an interestinf pattern evolution signaling regime shifts, even in noisy environments.
doi.org/10.1063/5.02...
Recurrence condensation during critical transitions in complex systems
Critical transitions in complex systems pose challenges for the healthy functioning of natural and engineered systems, sometimes with catastrophic outcomes. The
doi.org

Reposted by Norbert Marwan

dieandere.bsky.social
DIE aNDERE @dieandere.bsky.social · Sep 19
Sollte jemand partout nicht über seinen Schatten springen können 🫠

Am Sonntag Noosha Aubel @naubelpotsdam.bsky.social wählen!
Foto von Noosha Aubel die im Grünen steht mit dem rot geschriebenen Slogan Wählen Sie diesen Mann! oben rechts ein mintfarbener Kreis in den steht Falls die aus Gewohnheit nicht anders können:

Reposted by Norbert Marwan, Jonas Geschke

ingwarpero.bsky.social
Ingwar Perowanowitsch @ingwarpero.bsky.social · Sep 19
Die Entwicklung des Deutschlandtickets:

2022: 9€ = 27 Mio. Abonnenten

2023: 49€ = 14,5 Mio. Abonnenten

2025: 58€ = 13,4 Mio. Abonnenten

2026: 63€ = 10 Mio. Abonnenten

2027: 99€ = 5 Mio. Abonnenten

2028: „Leider erzielt das Ticket nicht den gewünschten Erfolg, daher müssen wir es einstellen“