Géophysique
J. Alkalla, C. Narteau, O. Rozier, J. Vérité & S. Courrech du Pont, Steady-state dune morphodynamics through the barchan-parabolic transition, J. Geophys. Res.: Earth Surf. 130 (2025).
J. Vérité, C. Narteau, O. Rozier, J. Alkalla, L. Barrier, & S. Courrech du Pont, Equilibrium distance from long-range dune interactions, Earth Surf. Dyn. 13 (2025).
D. M. Rubin, O. Rozier, C. Narteau & S. Courrech du Pont, Simulations of dune morphology under tri-directional wind regimes and application to dunes on Mars, Aeolian Res. 67-69 (2024).
P. A. Jarvis , C. Narteau , O. Rozier & N. M. Vriend, The probabilistic nature of dune collisions in 2D, Earth Surf. Dyn. 11 (2023).
C. Gadal, C. Narteau, S. Courrech du Pont, O. Rozier & P. Claudin, Periodicity in fields of elongating dunes, Geology 48 (2020).
O. Rozier, C. Narteau, C. Gadal, P. Claudin & S. Courrech du Pont, Elongation and stability of a linear dune, Geophys. Res. Lett. 46 (2019).
C. Gadal, C. Narteau, S. Courrech du Pont, O. Rozier & P. Claudin, Incipient bedforms in a bidirectional wind regime, J. Fluid Mech. 862 (2019).
P. Lü, Z. Dong & O. Rozier, The combined effect of sediment availability and wind regime on the morphology of aeolian sand dunes , J. Geophys. Res.: Earth Surf. 123 (2018).
X. Gao, C. Gadal, O. Rozier & C. Narteau, Morphodynamics of barchan and dome dunes under variable wind regimes , Geology 46 (2018).
P. Lü, C. Narteau, Z. Dong, O. Rozier & S. Courrech du Pont, Unravelling raked linear dunes to explain the coexistence of bedforms in complex dunefields, Nat. Comm. 8 (2017).
X. Gao, C. Narteau & O. Rozier, Controls on and effects of armoring and vertical sorting in aeolian dune fields: A numerical simulation study, Geophys. Res. Lett. 43 (2016).
P. Lü, Z. Dong, C. Narteau & O. Rozier, Morphodynamic mechanisms for the formation of asymmetric barchans: improvement of the Bagnold and Tsoar models, Environ. Earth Sci. 75 (2016).
X. Gao, C. Narteau & O. Rozier, Development and steady states of transverse dunes: A numerical analysis of dune pattern coarsening and giant dunes, J. Geophys. Res.: Earth Surf. 120 (2015).
A. Lucas et al, Sediment flux from the morphodynamics of elongating linear dunes, Geology 43 (2015).
X. Gao, C. Narteau, O. Rozier & S. Courrech du Pont, Phase diagrams of dune shape and orientation depending on sand availability, Sci. Rep. 5 (2015).
X. Gao, D. Zhang, O. Rozier & C. Narteau, Transport capacity and saturation mechanism in a real-space cellular automaton dune model, Adv. Geosci. 37 (2014).
D. Zhang, X. Yang, O. Rozier & C. Narteau, Mean residence time in barchan dunes, J. Geophys. Res.: Earth Surf. 119 (2014).
O. Rozier & C. Narteau, A Real-Space Cellular Automaton Laboratory, Earth Surf. Process. Landf. 39 (2013).
D. Zhang, C. Narteau, O. Rozier & S. Courrech du Pont, Morphology and dynamics of star dunes from numerical modelling, Nat. Geosci. 5 (2012).
D. Zhang, C. Narteau & O. Rozier, Morphodynamics of barchan and transverse dunes using a cellular automaton model, J. Geophys. Res.: Earth Surf. 115 (2010).
C. Narteau, D. Zhang, O. Rozier & P. Claudin, Setting the length and time scales of a cellular automaton dune model from the analysis of superimposed bed forms, J. Geophys. Res.: Earth Surf. 114 (2009).
Mathématiques
O. Rozier & C. Terracol, Paradoxical behavior in Collatz sequences, arXiv:2502.00948 (preprint).
O. Rozier, Are the Collatz and abc conjectures related?, Experiment. Math. (2025).
N. Lygeros & O. Rozier, Paramétrisation du problème 3x+1 sur la droite réelle : diagramme de phase, renormalisation et intervalles errants, hal-02412727 (2020).
O. Rozier, Parity sequences of the 3x+1 map on the 2-adic integers and Euclidean embedding, INTEGERS 19, article A8 (2019).
O. Rozier, The 3x+1 problem: a lower bound hypothesis, Funct. Approx. Comment. Math. 56 (2017).
N. Lygeros & O. Rozier, Dynamique du problème 3x+1 sur la droite réelle, Ratio Math. 26 (2014).
N. Lygeros & O. Rozier, Odd prime values of the Ramanujan tau function, Ramanujan J. 32 (2013).
N. Lygeros & O. Rozier, A new solution to the equation τ(p) ≡ 0 (mod p), J. Integer Seq. 13, article 10.7.4 (2010).
O. Rozier, Division de polynômes avec la FFT, Singularité 4, Vol. 2 (1991).
O. Rozier, Démonstration de l'absence de cycles d'une certaine forme pour le problème de Syracuse, Singularité 3 (1990).
O. Rozier, Résultats sur une classe d'ensembles de Hénon, Singularité 1 (1990).
Datasets
Invited talks
O. Rozier, Morphology of dunes under two winds, Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS), Beijing (2015).
Proceedings
O. Rozier, S. Courrech du Pont & C. Narteau, On the stable shape of elongating dunes, Windy Day Conference, Londres (2018).
O. Rozier, C. Narteau, C. Gadal, P. Claudin & S. Courrech du Pont, Morphogenesis and stability of elongating dunes, ICAR X, Solicited talk, Bordeaux (2018).
O. Rozier & C. Narteau, A Real Space Cellular Automaton Laboratory (ReSCAL) to analyze complex geophysical systems, EGU, Vienne (2012).
O. Rozier & I. Tellier, Système de Lambek étendu pour la traduction logique de phrases en langage naturel, Actes des premières rencontres nationales des jeunes chercheurs en Intelligence Artificielle, Rennes (1992).
PhD Thesis
Rapports
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