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
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pucicu.de
Next CTCS webinar next Monday, Nov 24, 2025, 8:30 PM to 10:00 PM IST, 4:00 PM to 05:30 PM CET

Prof. Balakumar Balachandran from the University of Maryland, will talk about "Can noise be used to realize the desired dynamics?"
us06web.zoom.us/webinar/regi...
ctcs.iitm.ac.in/ctcs-webinar
November 22, 2025 at 11:24 PM
Reposted by Norbert Marwan
solarpapst.bsky.social
Mit "technologieoffen" ist nicht wirklich technogieoffen gemeint, sondern: Wir wollen keinen #Klimaschutz machen.
November 15, 2025 at 4:04 PM
Reposted by Norbert Marwan
kryophil.bsky.social
-35 °C sind auch im Kasten - alles, was jetzt noch kommt, ist Zugabe… kaltluftseen.ch/saegistalsee...
November 22, 2025 at 9:06 PM
Reposted by Norbert Marwan
kryophil.bsky.social
Hintergräppelen hat sich mittlerweile aus dem Würgegriff des Hochnebels befreit und versucht, mit -6 °C/h Terrain gut zu machen. Die Bilder von saentis.roundshot.com (roter Pfeil: ungefähre Lage von Hintergräppelen) zeigen den Einfluss des Hochnebels.
(Zeit in der Graphik = UTC, Zeit Webcam = MEWZ)
November 22, 2025 at 9:59 PM
Reposted by Norbert Marwan
pik-potsdam.bsky.social
Congratulations to PIK scientist Sara Vallejo-Bernal! 🎉 She won the Outstanding Student and PhD Candidate Presentation Award 2025 from the European Geosciences Union’s Atmospheric Sciences division for her presentation on atmospheric rivers in North America: www.egu.eu/awards-medal... #EGU25
November 19, 2025 at 10:21 AM
Reposted by Norbert Marwan
wolfmaahn.bsky.social
Unser Kulturbotschafter aus dem Sauerland zeigt Brasilien, wie man richtig groovy tanzt.
November 19, 2025 at 7:29 PM
Reposted by Norbert Marwan
recurrence-plot.tk
New #Julia package for microstate analysis of #recurrence_plot
doi.org/10.1063/5.02...
RecurrenceMicrostatesAnalysis.jl: A Julia library for analyzing dynamical systems with recurrence microstates
Recurrence Quantification Analysis (RQA) has become a standard tool for extracting nonlinear characteristics from time series. It relies on specific recurrence
doi.org
November 18, 2025 at 3:49 PM
Reposted by Norbert Marwan
pucicu.de
Our partner from Federal University of Paraná (Curitiba) developed a fast #Julia package for microstate analysis of #recurrence_plot
doi.org/10.1063/5.02...
RecurrenceMicrostatesAnalysis.jl: A Julia library for analyzing dynamical systems with recurrence microstates
Recurrence Quantification Analysis (RQA) has become a standard tool for extracting nonlinear characteristics from time series. It relies on specific recurrence
doi.org
November 18, 2025 at 3:50 PM
pucicu.de
Our partner from Federal University of Paraná (Curitiba) developed a fast #Julia package for microstate analysis of #recurrence_plot
doi.org/10.1063/5.02...
RecurrenceMicrostatesAnalysis.jl: A Julia library for analyzing dynamical systems with recurrence microstates
Recurrence Quantification Analysis (RQA) has become a standard tool for extracting nonlinear characteristics from time series. It relies on specific recurrence
doi.org
November 18, 2025 at 3:50 PM
Reposted by Norbert Marwan
speleoseb.bsky.social
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...
International Day of Caves and Karst
UNESCO Digital Library
unesdoc.unesco.org
November 12, 2025 at 10:22 PM
Reposted by Norbert Marwan
risujith.bsky.social
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
November 12, 2025 at 1:10 PM
Reposted by Norbert Marwan
alevermann.bsky.social
...das bedeutet: Wer das Pariser Klimaabkommen aufgibt, gibt Hamburg auf... New York, Shanghai, Kalkutta,...
November 7, 2025 at 6:17 PM
Reposted by Norbert Marwan
rahmstorf.bsky.social
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
October 28, 2025 at 10:47 AM
Reposted by Norbert Marwan
speleoseb.bsky.social
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
Reposted by Norbert Marwan
recurrence-plot.tk
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
pucicu.de
Another study using the novel K-operator concept by @[email protected] 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
Reposted by Norbert Marwan
kryophil.bsky.social
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
pucicu.de
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
October 24, 2025 at 8:35 PM
Reposted by Norbert Marwan
ruthe.de
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
pucicu.de
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
October 21, 2025 at 9:41 PM
pucicu.de
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
October 21, 2025 at 6:41 PM
pucicu.de
😃 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
Reposted by Norbert Marwan
rahmstorf.bsky.social
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...
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
Reposted by Norbert Marwan
volksverpetzer.de
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...
September 25, 2025 at 11:26 AM
pucicu.de
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