Spatial and temporal development of the dune instability at White Sands Dune Field, New Mexico, USA. C. Gadal,

Gadal, C. Narteau , R.C. Ewing, A. Gunn, D. Jerolmack, B. Andreotti and P. Claudin, Université de Paris, Institut de physique du globe de Paris, CNRS, F-75005 Paris, France, (gadal@ipgp.fr , narteau@ipgp.fr ) Texas A&M University, Department of Geology and Geophysics, United States, (rce@tamu.edu) Department of Earth and Environmental Science, University of Pennsylvania, Philadelphia, PA, USA, (andle@sas.upenn.edu, sediment@sas.upenn.edu) Laboratoire de Physique de l'Ecole Normale Supérieure, ENS and PSL Research University–Sorbonne Université–Université de Paris, France, (andreotti@lps.ens. fr ) Physique et Mécanique des Milieux Hétérogènes, ESPCI Paris and PSL Research University–Sorbonne Université–Université de Paris, France (claudin@pmmh.espci.fr).