Reply to comment by B. Andreotti et al. on "Solving the mystery of booming sand dunes"

Vriend, N. M. and Hunt, M. L. and Clayton, R. W. and Brennen, C. E. and Brantley, K. S. and Ruiz-Angulo, A. (2008) Reply to comment by B. Andreotti et al. on "Solving the mystery of booming sand dunes". Geophysical Research Letters, 35 (8). ISSN 0094–8276 DOI

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[1] This reply addresses three main issues raised in the comment of Andreotti et al. [2008]. First, the turning of ray paths in a granular material does not preclude the propagation of body waves and the resonance condition described by Vriend et al. [2007]. The waveguide model still holds in the dune for the observed velocities, even with a velocity increase with depth as implied by Andreotti et al. [2008]. Secondly, the method of initiation of spontaneous avalanching does not influence the booming frequency. The frequency is independent of the source once sustained booming starts; it depends on the subsurface structure of the dune. Thirdly, if all data points from Vriend et al. [2007] are included in the analysis (and not an average or selection), no correlation is observed between the sustained booming frequency and average particle diameter.

Item Type: Article
Uncontrolled Keywords: NILAREP
Subjects: 02 - Geodynamics, Geophysics and Tectonics
Divisions: 02 - Geodynamics, Geophysics and Tectonics
Journal or Publication Title: Geophysical Research Letters
Volume: 35
Identification Number:
Depositing User: Sarah Humbert
Date Deposited: 18 May 2020 00:13
Last Modified: 18 May 2020 00:13

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