Hydraulic Transients: A Seismic Source in Volcanoes and Glaciers

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Science  16 Feb 1979:
Vol. 203, Issue 4381, pp. 654-656
DOI: 10.1126/science.203.4381.654


A source for certain low-frequency seismic waves is postulated in terms of the water hammer effect. The time-dependent displacement of a water-filled sub-glacial conduit is analyzed to demonstrate the nature of the source. Preliminary energy calculations and the observation of hydraulically generated seismic radiation from a dam indicate the plausibility of the proposed source.