Abstract

It is proposed that volcanic tremor originates in the vibration of laminae which are partly freed by the differential tilting of the surface of the earth around a volcanic vent during an eruption. The topographic evidence around Kilauea caldera is examined and a probable range of the free vibrating lengths is determined. The various possible modes of vibration are considered and it is concluded that longitudinal vibration would best explain the observed seismograms.

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