How to make a miniature river

What if we recreated rivers in the lab, to better understand them in real life? 🏞️ This the PhD work of Anaïs Abramian! She takes us on a tour of this model experiment, at the crossroads between physics and geology!
↓ More infos and links in the description! ↓

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LINKS:

French version: https://www.youtube.com/watch?v=yY76LOO4P0E
Subscribe to the channel : https://youtube.com/thelutetiumproject
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Visit our website: https://www.lutetium.paris/en

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MORE ABOUT THE INTERVIEWEE:

Anaïs Abramian is an alumna of ENS Lyon. She obtained a master's degree in liquid state physics from École Normale Supérieure. She conducted her PhD thesis at Institut de Physique du Globe de Paris, as a member of the team of Geological Fluid Dynamics. She defended in 2018; her thesis was titled "Self-organisation of sediment transport in alluvial rivers." She then joined Institut Jean le Rond d'Alembert as a postdoctoral researcher in 2019. Her research now focuses on cohesive granular materials.
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RELATED ARTICLE:

Anaïs Abramian, Olivier Devauchelle , Grégoire Seizilles & Eric Lajeunesse, Boltzmann Distribution of Sediment Transport, Physical Review Letters, 123, 014501 (2019)
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.014501

Anaïs Abramian, Olivier Devauchelle & Eric Lajeunesse, Streamwise streaks induced by bedload diffusion, Journal of Fluid Mechanics, 863, 601 (2019)
https://doi.org/10.1017/jfm.2018.1024

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VIDEO BREAKDOWN:

00:00 Different sizes, same flows
02:47 Making a river in the lab
05:02 A model experiment
06:43 Measuring the topography of the river
07:23 Refraction of light
08:28 Sediments shape rivers
10:37 Diffusion and Brownian motion
11:39 Nature and role of the diffusion of grains
13:56 From model experiments to real rivers
15:36 Conclusion

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CREDITS:

Host:
Guillaume Durey

Researcher:
Anaïs Abramian

Writers:
Guillaume Durey, Mathias Kasiulis

Director:
Hoon Kwon

Animator:
Benjamin Alardin

Sound editor:
Valentin Zorgnotti

Editors:
Kévin Lamothe, Guillaume Durey

Visual identity:
Juliette Nier

Theme music:
Pierre David

Produced by:
Guillaume Durey, Mathias Kasiulis
, Quentin Magdelaine

This video was shot on September 23rd, 2017.

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The Lutetium Project is a PSL students’ initiative conducted as part of IDEX ANR-10-IDEX-0001-02 PSL and funded by:
PSL Research University – https://www.univ-psl.fr
ESPCI Paris – https://www.espci.fr
Espace des sciences Pierre-Gilles de Gennes – https://www.espgg.org
ESPCI Alumni – https://espci.alumni.paris

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Видео How to make a miniature river канала The Lutetium Project