Відео

The Perpetual Fragility of Creeping Hillslopes Pour sand on a table. What happens? At first blush, not much. Grains fall and form a pile. When pouring stops, it all rests at the angle of repose. To our eyes, this sandpile is frozen, immobile: jammed. It turns out that, if viewed with the help of sensitive laser interference, this pile is anything but immobile. It creeps incessantly for 11 days ...

Insights into alluvial channel dynamics from variability in high-resolution downstream hydraulic geometry The shape of a river reflects a balance of climate, hydrology, and sediment transport. Stable channels maintain a robust scaling between bankfull discharge and width, such that in aggregate, Q ~ aW0.5. Remarkably, this discharge-width scaling is consistent across 13 orders of magnitude from...

Quantifying and monitoring instream large wood supply and transfer in rivers Large wood influences the rivers' flow and sediment regimes, and together, the three regimes, flow, sediment and wood, regulate rivers' physical and ecological functions. Like the flow and sediment regimes, the large wood regime can be characterized according to its magnitude, frequency, timing, duration, and mode. But...

Illuminating landscape responses to Quaternary climate change with luminescence Abstract: Upon exposure to daylight, minerals such as quartz and feldspar emit photons of light due to the movement of electrons within their crystal lattices. This phenomenon arises due to their exposure to naturally occurring radiation during their burial and forms the basis for a key geochronological technique in...

The ups and downs of extensional tectonics Abstract: Landscapes shaped in extensional tectonic settings are hard to study. For centuries many have attempted to delineate long-term tectonic histories of these areas through a range of geomorphic, analytical and stratigraphic approaches, all arriving at differing conclusions. These are, in part, down to the limitations inherent in each approach an...

Geomorphic work of recent episodic rainstorm events in arid landscapes: examples from the Atacama Desert Abstract: This talk will navigate through examples of geomorphic changes during recent rainstorm events that have impacted the Atacama Desert. It will demonstrate how the integration of remote sensing (in particular Synthetic Aperture Radar products) assists in understanding how and where su...

Resolving the impacts of earthquakes, storms, and prolonged rainfall on shallow landsliding Abstract: In mountainous areas, earthquakes and rainfall trigger shallow landslides, which represent a significant source of erosion, as well as posing a hazard to communities. Multi-spectral satellite images allow us to compile detailed inventories of these events which allow us to estimate mass wasting...

Lithospheric flexure controls on geomorphology, hydrology, and river chemistry in the Andean foreland basin Abstract: Tectonics exerts a strong control over the morphology of Earth’s surface that is apparent in active mountain belts. In lowland areas, subtle processes like lithospheric flexure and isostatic rebound can impact Earth surface dynamics, hydrologic connectivity, and topography, sugg...

What can dryland sediments tell us about landscapes through time? Abstract: Almost half of the Earth’s land surface comprises deserts and desert margins. These so-called drylands include substantial swathes of unconsolidated sediment which preserve information about past conditions and interactions between the atmosphere and Earth surface. Under conditions of accelerated global change, desert m...

The Dynamic Life and Times of Oxbow Lakes Oxbow lakes are some of the most recognisable features on Earth, preserving historic river channel for nutrient, contaminant, and sediment sequestration and forming important diversity hotspots within the riparian corridor. Despite the significant value they provide through ecosystem services, little is known about how the lakes physically and chemicall...

Retreat, Recovery, and Subglacial Radiocarbon: Untangling past [in]stability of the West Antarctic Ice Sheet Abstract: Reconstructions of past ice sheet behavior enable us to refine physical models that predict how much, how fast, and from where Antarctic ice mass loss will contribute to future sea level rise. Geological constraints on paleo ice thickness obtained from above the modern ice surf...

Intermediate Timescales in Fluvial Geomorphology Abstract: To understand rivers, we can resolve turbulence and sediment transport over single floods or abstract these detailed physics into heuristic rules that function over millions of years. But between the time of an eddy's swirl and a mountain's rise lie years to millennia of landscape change. Critically, these intermediate time scales encom...

Lakes and saddles pacing the life of landscapes. From the Messinian Mediterranean to the outburst flood scale. Abstract: Lake basins are local topographic minima separated from the surrounding landscape by topographic sills or saddles. Lakes are geologically-ephemeral features that tend to fill with sediment and water and to reintegrate in the fluvial network unless some mechanism sustains the ...

Modern climate change-driven landscape processes in cryospheric basins: sediment sources, fluxes, and impacts Abstract: Cryospheric basins are now experiencing amplified climate change, glacier melt, and permafrost thaw. The accelerating glacier retreat and permafrost degradation are associated with frequent hazards including glacier collapses, rockfalls, landslides, debris flows and lake outbu...

Landscapes Live (19/10/2023): Alice Puppin (University of Padova)

Landscapes Live (12/10/2023) - Todd Ehlers (University of Glasgow)

Landscapes Live (22.06.23). Vivi K. Pedersen

Landscapes Live (15/06/2023): Daniel Peifer (University of Tuebingen)

Landscapes Live (01/06/2023): Duna Roda-Boluda (Vrije Universiteit Amsterdam)

Landscapes Live (15 May 2023): Jorge Lorenzo Trueba (Montclair State University)

Landscapes Live (18/05): Vjeran Visnjevic (University of Tuebingen)

Landscapes Live (04-May-2023) Jeffrey Kwang (University of Minnesota Twin Cities)

Landscapes Live by Erin Seagren, Simon Fraser University [30/03/2023]

Landscapes Live (23/03)- Wolfgang Schwanghart (Uni Potsdam)

Landscape Live by Cai Ladd (University of Glasgow) [16.03.2023]

Landscapes Live by Rebecca Hodge (Durham, University) [09-March-2023]

Landscapes Live by Ellen Wohl [23.02.23]: Rivers of Carbon

Landscapes Live [16 Feb 2023] Harrison Gray (USGS)

Landscapes Live [09/02/2023] Taylor Schildgen (GFZ, Potsdam)