Landscapes Live Thursday February 18th: Edwin Baynes - Hard vs Soft: spatial variability in bedrock channel geometry driven by sediment av

 Dear all,

We are very pleased to announce our second “Landscapes Live” online seminar of 2021 by Edwin Baynes(Loughborough University) that will occur this week on Thursday 18th February at 7 am PST / 10 am EST / 3 pm GMT / 4 pm CET on:

“Hard vs Soft: spatial variability in bedrock channel geometry driven by sediment availability”

Abstract: Sediment supply is a key role in the physical processes that drive erosion and sedimentation in bedrock and mixed gravel-bedrock rivers. In this talk, I’ll show the direct impact of the supply of coarse‐grained, hard sediment on the geometry of (soft) bedrock channels from the Rangitikei River, New Zealand. Channels receiving a coarse bedload sediment supply are found to be systematically (up to an order of magnitude) wider than channels with no bedload sediment input for a given discharge. I’ll also explore this phenomenon using analogue model experiments of a bedrock river reach under different sediment supply conditions, before comparing bedrock channel geometries from the Rangitikei and the experiments to a compilation of alluvial channels. The importance of considering sediment supply when studying bedrock channels will be highlighted as multiple configurations of channel geometry can exist for a given discharge, solely due to the input sediment supply. 

This seminar will be live on Zoom and open to anyone interested (with a limit of 300 participants). You can register in advance for this Zoom meeting here: 

https://us02web.zoom.us/meeting/register/tZYkduirpzIrEtXSsIT8wsicMBoCzD186Qpx


After registering, you should receive a confirmation email containing information about joining the meeting. We will also post the Zoom link for this meeting on the seminar website: https://osur.univ-rennes1.fr/LandscapesLive/.

The Landscapes Live online seminar series will then continue the following weeks with:

  • Thursday 25th February at 3 pm GMT/ 4 pm CET: Allison Pfeiffer, Western Washington University
  • Thursday 4th March at 3 pm GMT/ 4 pm CET: Karl Lang, Georgia Institute of Technology
  • Thursday 11th March at  3 pm GMT/ 4 pm CET: Ajay Limaye, University of Virginia
  • Thursday 18th March at 3 pm GMT/ 4 pm CET: Roman DiBiase, Pennsylvania State University   
  • Thursday 25th March at 3 pm GMT/ 4 pm CET: Simon Mudd, University of Edinburgh      

Previous talks are available on the website (https://osur.univ-rennes1.fr/LandscapesLive/). We are already planning a second seminar series this spring. Feel free to contact us if you have questions or suggestions: landscapesliveseminar@gmail.com

Landscapes Live is the EGU Geomorphology Division's virtual webinar series focused on sharing exciting geomorphology research throughout the international scientific community.

Best wishes, 

The Landscapes Live team,

Philippe Steer, Rebekah Harries, Steffi Tofelde, Michal Ben-Israel, Charlie Shobe, Pierre Valla, Vivi Pederson and Boris Gailleton

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