Articles | Volume 5, issue 1
Earth Surf. Dynam., 5, 125–143, 2017
https://doi.org/10.5194/esurf-5-125-2017
Earth Surf. Dynam., 5, 125–143, 2017
https://doi.org/10.5194/esurf-5-125-2017

Research article 21 Feb 2017

Research article | 21 Feb 2017

Autogenic versus allogenic controls on the evolution of a coupled fluvial megafan–mountainous catchment system: numerical modelling and comparison with the Lannemezan megafan system (northern Pyrenees, France)

Margaux Mouchené et al.

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AR by Margaux Mouchene on behalf of the Authors (09 Jan 2017)  Author's response    Manuscript
ED: Publish as is (24 Jan 2017) by Sebastien Castelltort
ED: Publish as is (30 Jan 2017) by Niels Hovius(Editor)
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Short summary
The Lannemezan megafan (northern Pyrenean foreland) was abandoned during the Quaternary and subsequently incised. We use numerical models to explore possible scenarios for the evolution of this megafan. We show that autogenic processes are sufficient to explain its evolution. Climate may have played a second-order role; in contrast base-level change, tectonic activity and flexural isostatic rebound do not appear to have influenced its evolution.