Folding due to anisotropy in ice, from drill-core-scale cloudy bands to km-scale internal reflection horizons
Journal: The cryosphere
Year: 2025

Abstract. Upright folds in ice sheets are observed on the cm scale in cloudy bands in drill cores and on the km scale in radargrams. We address the question of the folding mechanism for these folds by analysing the power spectra of fold trains to obtain the amplitude as a function of wavelength signal. Classical Biot-type buckle folds due to a rheological contrast between layers develop a characteristic wavelength, visible as a peak in the power spectrum. Power spectra of ice folds, however, fol