Abstract
This paper describes a spectacular gravity wave event which was detected by meteorological instruments deployed in the stably stratified atmospheric boundary layer overlying the Brunt Ice Shelf, Antarctica. Varying levels of turbulence activity were also observed. Wind and temperature records from sonic anemometers deployed on a 32 m mast have been studied using cross-spectral analysis and the orthogonal wavelet transform. Wavelet-based variance characteristics and derived parameters are used to identify self-similar processes, noise and coherent structures within a signal, thus providing useful information on the distribution of energy. Local maxima in the wavelet variance characteristics at lower wavelet levels were linked with a propagating internal wave.
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