L. K. Zoet, S. Anandakrishnan, R. B. Alley, A. A. Nyblade, and D. A. Wiens
Nature Geoscience (19 August 2012)
Subglacial seismicity reveals information about glacier behaviour. Analysis of repeated seismic events beneath an Antarctic outlet glacier is consistent with sliding of debris-laden ice over a bedrock asperity with an event frequency that is modulated by the ocean tides.