[Soft-matter] Soft Matter and Complex Systems Seminars this week

[Maciej Lisicki]

Dear Soft Matter Colleagues and Friends,

A reminder that this week we have two exciting seminar talks, the Complex Systems Seminar on Thursday (https://www.fuw.edu.pl/seminarium-modeling-of-complex-systems.html <https://www.fuw.edu.pl/seminarium-modeling-of-complex-systems.html>) and our regular Soft Matter and Statistical Physics Seminar on Friday (https://www.fuw.edu.pl/aktualnosci-all/news7758.html). You can find the details below. 

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On Thursday 13 Oct 2022 at 15:15 PM at the UW Faculty of Physics (Pasteura 5, Warsaw; room 1.03) we are hosting a seminar during which

Pierre-Marie Lefeuvre (Norwegian Polar Institute)

will give a talk

Three short glacier stories: The 1950s origin of the ice flow theory, Towards predicting iceberg break-off, and Dramatic glacier accelerations in Svalbard.

Abstract
This presentation will shortly introduce today’s interest for glaciers through the 1950s rebirth of Glaciology, i.e. the study of ice and snow, and the developments of the theory of ice flow by Glen and Nye from the University of Cambridge. Two research projects in Svalbard, Norway are then discussed which emphasize the importance of understanding glacier mechanics to predict glacier contribution to sea-level rise. The first presents velocity observations at the front of a glacier showing that iceberg break-off, also called "calving", can be predicted. Velocity time-series from a terrestrial radar interferometer 2-min scans identifies block accelerations prior to the calving of the blocks, hinting towards a relationship between block rotation, strain rates and crevasse opening.  Our last story of the day will be on a dramatic glacier phenomena called “surges". In less than a few years, complex changes in basal friction lead to rapid glacier acceleration, sometimes ten-fold its normal velocity, drainage of the entire glacier accumulation basin and front advance in the fjords of sometimes several kilometres. This behaviour is illustrated at a glacier currently monitored by the Norwegian Polar Institute through a combination of remote sensing and GNSS observations measurements. A non-linear feedback explains this cyclic behaviour through changes in basal friction, acceleration, opening of crevasses providing meltwater access to the glacier bed before the glacier mass is drained into the fjord.
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To celebrate the beginning of the new academic year, on Friday 14 Oct 2022 at 9:30 AM at the UW Faculty of Physics (Pasteura 5, Warsaw; room 1.40) we are hosting a special seminar during which

Bogdan Cichocki (FUW)

will give a talk

Marian Smoluchowski – his life and works

Abstract
Year 2022 marks the 150th anniversary of birth of Marian Smoluchowski, a pioneer of the statistical physics. On this occasion his short biography will be presented and his most important works, namely on electrophoresis, Brownian motion, critical opalescence and coagulation, will be discussed.
We warmly welcome everyone to attend the talk and the Soft Matter Coffee Break after the seminar, held this time in room 2.63 (2nd floor).
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Maria Ekiel-Jeżewska
Maciej Lisicki
Piotr Szymczak
Panagiotis Theodorakis


--
dr hab. Maciej Lisicki
Institute of Theoretical Physics | Faculty of Physics
University of Warsaw
softmatter.fuw.edu.pl <http://softmatter.fuw.edu.pl/>






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