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Updated: Jan 6, 2026

Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt
Published on: August 7, 2017
Mathematical model for volcanic harmonic tremors
Giordano Montegrossi1,2, Angiolo Farina3, Lorenzo Fusi4,3
1IGG Istituto Geoscienze e Georisorse, CNR, Via la Pira 4, Firenze, 50121, Italy. montegrossi@igg.cnr.it.
Abstract:
Harmonic tremors consist in the release of infrasonic energy associated with volcanic activity. The typical frequency range of harmonic tremors is 0.1-12 Hz. We suppose that the harmonic tremors are due to the formation of bubbles entrapped in cavities that oscillate converting thermal energy into mechanic energy. Reproducing the natural phenomenon through an experimental apparatus, we propose here a mathematical model to describe the oscillatory mechanism and to detect the frequency as a function of the main physical parameters. We show that the frequency obtained through the model is in agreement with the one obtained through experimental measurements and with the data available from the literature, proving the consistency of the proposed model.
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