Landscapes Live

Thursday, 20 March 2025 at 16:00 CET

James Gearon (Indiana University Bloomington, USA)

How River Avulsion Works

River avulsion occurs when a river channel suddenly switches course. Avulsing rivers create new pathways on the floodplain and the associated flooding can profoundly affect society, with records of these disasters stretching back millennia into human history. River avulsions are thought to occur when the water column becomes perched above the floodplain or when the slope down the flanks of the channel provides a steeper descent than the existing river channel. I tested these classical ideas by quantifying the topography around avulsing rivers and show that these mechanisms, historically invoked separately, work together. Near coasts, rivers avulse when the slope away from the channel is steeper, not because they are perched. The opposite is true near mountain fronts; on fans, the alternative paths are similarly steep to the downstream path, so rivers avulse when they are perched above the surrounding landscape. I reconcile these findings and present a new theoretical framework that identifies which rivers are vulnerable to avulsion and predicts the path of an avulsing river. These first-order rules of avulsion suggest that avulsion risks are underestimated in many coastal environments and that probabilistic predictions of avulsion pathfinding can efficiently map hazards with minimal information. Applying these principles for risk assessment could particularly benefit the Global South, which is disproportionately affected by avulsions.

Zoom link: https://ucsb.zoom.us/meeting/register/vY9B7d5TQQa3865_mBm6KQ

Paul's website: https://sandfrom.space/

Thursday, 27 March 2025 at 16:00 CET

TBD

Thursday, 3 April 2025 at 16:00 CEST

Victor Sacek (Universidade de São Paulo, Brazil)

Title TBD

Zoom link:

Victor's Google Scholar page: https://scholar.google.fr/citations?user=HZmuwlYAAAAJ&hl=fr

Thursday, 10 April 2025 at 16:00 CEST

Julia Cisneros (Virginia Tech, USA)

 Shaped by Nature: Bedforms as Windows into Environmental Systems

In the process of sediment transport through a shearing flow, dunes are forming and simultaneously recording their surrounding conditions. These records offer clues about the movement of wind and water across an ancient, otherwise unknown, landscape. In turn, dunes are influencing how sediment is transported. Key to leveraging these records of ancient environments is our understanding of the links between flow, sediment transport, and bedform morphodynamics. To gain that critical understanding, we use modern bedforms to understand the conditions of the Earth and planetary systems and improve how contemporary environments are managed.

This talk will highlight research that aims to investigate the links between dune formation and dune shape in a range of different environmental conditions. By examining the processes driving the formation of different dune types, we gain insight into how flow conditions, sediment transport modes, and bedform morphodynamics interact to create complexity in dune morphology. Particular attention will be given to the importance of low, intermediate, and high angle dunes, with a focus on the interplay between sediment suspension, bedload transport, and bedform superimposition. Through these investigations, we demonstrate that dunes are more than just markers of sediment transport. We show that they are nuanced indicators of environmental dynamics, offering a deeper understanding of both ancient and modern systems. This information is vital to improving our approach to managing contemporary rivers under modern stressors and revealing the deposits of ancient environments.

Zoom link:

Julia's website: https://juliacisneros.com/

Thursday, 17 April 2025 at 16:00 CEST

Yaquan Chang (ETH Zurich, Switzerland)

Tectono-geomorphic controls on plant biodiversity of the Hengduan Mountains

Zoom link:

Yaquan's website: https://yaquanchang.github.io/

Thursday, 24 April 2025 at 16:00 CEST

Sinéad Lyster (Pennsylvania State University)

The impact of vegetation on delta landscapes and stratigraphy: Insights from physical experiments

Zoom link:

Sinéad's website: https://www.sineadlyster.com/

Thursday, 1 May 2025

See you at EGU!

Thursday, 8 May 2025 at 16:00 CEST

Jaap Nienhuis (Utrecht University, Netherlands)

TBD

Zoom link:

Jaap's website: https://jhnienhuis.github.io/

Thursday, 15 May 2025 at 16:00 CEST

Audrey Margirier (University of Lausanne, Switzerland)

Unraveling sediment transport and landscape evolution using trapped charge dating techniques

Zoom link:

Audrey's website: https://audreymargirier.wixsite.com/geology

Thursday, 22 May 2025 at 16:00 CEST

Jingtao Lai (University of Glasgow, United Kingdom)

TBD

Zoom link:

Jingtao's website: https://laijingtao.github.io/

Thursday, 29 May 2025 at 16:00 CEST

Abdallah S. Zaki (University of Texas at Austin, United States)

Ancient water-formed landscapes and past climate on Earth and Mars

Zoom link:

Abdallah's website: https://abdallahszaki.com/

Thursday, 5 June 2025 at 16:00 CEST

Dan Parsons (Loughborough University, United Kingdom)

TBD

Zoom link:

Dan's website: https://www.lboro.ac.uk/subjects/geography-environment/staff/dan-parsons/

Thursday, 12 June 2025 at 16:00 CEST

Joel Wilner (Dartmouth College, United States)

Erosion showdown: glacial vs. fluvial erosion rates and the limits to timescale-dependence

Zoom link:

Joel's Google Scholar: https://scholar.google.com/citations?user=zfRosDIAAAAJ&hl=en

Thursday, 19 June 2025 at 16:00 CEST

Andrew Gunn (Monash University, Australia)

TBD

Zoom link:

Andrew's website: https://research.monash.edu/en/persons/andrew-gunn

Thursday, 26 June 2025 at 16:00 CEST

Zhiwei Xu (Nanjing University, China)

TBD

Zoom link:

Zhiwei's website: https://scholar.google.com/citations?user=kZLbPDEAAAAJ&hl=en

Thursday, 3 July 2025 at 16:00 CEST

Vanessa Gabel (University of Colorado Boulder, United States)

Recent uplift of the North American High Plains: Insights from landscape evolution modeling

Zoom link:

Vanessa's website: https://www.colorado.edu/geologicalsciences/vanessa-gabel

Thursday, 13 March 2025 at 16:00 CET

Paul Bierman (University of Vermont, USA)

A landscape under the ice: Camp Century, Greenland

Talk is now on LL's Youtube channel: https://youtu.be/62_9NHPdC54

Thursday, 05 December 2024 at 16:00 CET

Edward Rhodes (University of Sheffield, U.K.)

Developing luminescence chronologies for active tectonic regions

Talk is now on LL's Youtube channel: https://www.youtube.com/watch?v=FI1YMtZ4W14

Thursday, 28 November 2024 at 16:00 CET

Lindsay Schoenbohm (University of Toronto, Canada)

Rocks Matter: why it is important to consider lithologic resistance to erosion in landscape evolution 

Talk is now on LL's Youtube channel: https://www.youtube.com/watch?v=OwU2C26c4Nc

Thursday, 7 November 2024 at 16:00 CET

Victoria Milanez Fernandes (GFZ, Germany)

Pleistocene landscape evolution above the Patagonian Slab window

Talk is now on LL's Youtube channel: https://www.youtube.com/watch?v=dCzNCwaOdrI

Thursday, 31 October 2024 at 16:00 CEST

Tancrède Leger (University of Lausanne, Switzerland)

A data-consistent model of the last glaciation in the Alps achieved with physics-driven AI

Talk is now on LL's Youtube channel: https://www.youtube.com/watch?v=TZpbp5doAIk

Thursday, 24 October 2024 at 16:00 CEST

Aurélie Davranche (University of Helsinki, Finland; University of Angers, France)

From field to space: multisource data to show how a nature based management can help to cope for sea level rise in the Mediterranean area 

Talk is now on LL's Youtube channel: https://www.youtube.com/watch?v=41Weju45g0w

Thursday, 17 October 2024 at 16:00 CEST

Gareth Roberts (Imperial College London, UK)

Embracing scale and erosional randomness to understand landscape evolution

Talk is now on LL's Youtube channel: https://youtu.be/duqckTHGtI4

Thursday, 10 October 2024 at 16:00 CEST

Jérôme Lavé (CNRS, CRPG Nancy, France)

Giant collapses of high Himalayan peaks and their implications on the Himalayan landscapes

Talk is now on LL's YouTube channel: https://youtu.be/1pE68ZXTJ1A

Thursday, 3 October 2024 at 16:00 CEST

Eric Barefoot (University of California Riverside, USA)

Experimental Constraints on the Morphology of Canyons Formed by Crater Overtopping

Talk is now on LL's YouTube channel: https://youtu.be/WPZamy_EyS8?feature=shared

Thursday, 6 June 2024 at 16:00 CEST

Nakul Deshpande (NC State University, USA)

The Perpetual Fragility of Creeping Hillslopes

Talk is now on LL's YouTube channel: https://youtu.be/JuRl9coHMIo

Thursday, 28 March 2024 at 16:00 CET

Katy Burrows (ESA)

Resolving the impacts of earthquakes, storms, and prolonged rainfall on shallow landsliding 

Talk is now on LL's YouTube  channel: https://www.youtube.com/watch?v=72yxOMXzfNs

Thursday, 4 April 2024 at 16:00 CEST

Albert Cabré (GET, Geoscience Environment Toulouse, France)

Geomorphic work of recent episodic rainstorm events in arid landscapes: examples from the Atacama Desert

Talk is now on LL's YouTube  channel: https://www.youtube.com/watch?v=uKF473Pv1No

Thursday, 11 April 2024 at 16:00 CEST

Scott Jess (Washington State University, USA)

The ups and downs of extensional tectonics

Talk is now on LL's YouTube  channel: https://www.youtube.com/watch?v=SQQFXh5aYIw

Thursday, 2 May 2024 at 16:00 CEST

Danica Roth (Colorado School of Mines, USA)

Unveiling nonlocal landscape dynamics: exploring hillslope processes beyond the diffusive paradigm 

Talk is now on LL's YouTube  channel: https://youtu.be/VJcZBe6thqQ

Thursday, 9 May 2024 at 16:00 CEST

Sam Woor (University of British Columbia & University of the Fraser Valley, Canada)

Illuminating landscape responses to Quaternary climate change with luminescence

Talk is now on LL's YouTube  channel: https://www.youtube.com/watch?v=pDmnPb-FiLA

Thursday, 16 May 2024 at 16:00 CEST

Virginia Ruiz-Villanueva (University of Lausanne & University of Bern, Switzerland)

Quantifying and monitoring instream large wood supply and transfer in rivers 

Talk is now on LL's YouTube  channel: https://www.youtube.com/watch?v=38oT5MwHgX4 

Thursday, 23 May 2024 at 16:00 CEST

Claire Masteller (Washington University in St. Louis, USA)

Wiggles in width:  Insights into alluvial channel dynamics from variability in high-resolution downstream hydraulic geometry

Talk is now on LL's YouTube  channel: https://www.youtube.com/watch?v=BMizP1choAE