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Volcanic Tremor^*

(PART TWO: THE THEORY OF VOLCANIC TREMOR)

DEPARTMENT OF PHYSICS, UNIVERSITY OF OREGON,, EUGENE OREGON

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.

Footnotes

^* Manuscript received for publication June 25, 1949.

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