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GM2.5 | Unravelling topographic evolution at different scales: insights from modelling and quantifying techniques
EDI
Unravelling topographic evolution at different scales: insights from modelling and quantifying techniques
Convener: Romano Clementucci | Co-conveners: Riccardo Reitano, Sebastien Carretier, Laure Guerit
Topography is the result of the competition between processes acting at different spatial and temporal scales. Tectonics, climate, and surface processes all leave fingerprints on modern topography, making it difficult for researchers to univocally characterize their contribution to shaping landscapes. A main target of recent geology is indeed to quantify the nature and the magnitude of the interaction between tectonics, climate, surface processing, and evolving topography from shorter to longer term timescales. The use of laboratory, numerical and mathematical modelling and the recent advances in geochronological and thermochronological techniques, allow quantitative constraints on the magnitude, rates, and timing of topographic changes. Moreover, the development of new laboratory apparatus and numerical codes allows identifying how autogenic features like new channels developing during fluvial avulsion, topographic gradients, river terraces, alluvial fans and erosional surfaces develop into evolving landscapes. Modelling is also extremely useful in following variations in incision/discharge rate during the general topographic evolution. Overall, this information could be crucial when interpreting data coming from field observations.

We invite contributions aiming to link analogue, numerical and mathematical models, with quantitative techniques like cosmogenic nuclides and thermochronometric data, in supporting field interpretations.