Wavelet power spectra of aeolian sand transport by boundary layer turbulence

TY - JOUR

T1 - Wavelet power spectra of aeolian sand transport by boundary layer turbulence

AU - Baas, Andreas

PY - 2006/3/16

Y1 - 2006/3/16

N2 - This letter reports on wavelet spectral analysis of collocated time-series of streamwise wind speed and aeolian sand transport collected at 0.04 m above the bed in a field experiment on top of a large sand mound in a desert environment. Results suggest three distinct spatio-temporal scales of interaction between boundary layer turbulence and sediment transport: a long-term scale associated with the regional mixing layer, an integral time-scale associated with the internal boundary layer, and a streamer scale associated with the inertial subrange (eddy cascade) and saltation inertia

AB - This letter reports on wavelet spectral analysis of collocated time-series of streamwise wind speed and aeolian sand transport collected at 0.04 m above the bed in a field experiment on top of a large sand mound in a desert environment. Results suggest three distinct spatio-temporal scales of interaction between boundary layer turbulence and sediment transport: a long-term scale associated with the regional mixing layer, an integral time-scale associated with the internal boundary layer, and a streamer scale associated with the inertial subrange (eddy cascade) and saltation inertia

U2 - 10.1029/2005GL025547

DO - 10.1029/2005GL025547

M3 - Article

SN - 1944-8007

VL - 33

SP - 1

EP - 4

JO - GEOPHYSICAL RESEARCH LETTERS

JF - GEOPHYSICAL RESEARCH LETTERS

IS - 5

M1 - L05403

ER -