Acoustic, Magnetic, and Electric Effects of Stromboli Volcano Eruption, Italy, in July–August 2019

The results of instrumental observations of acoustic oscillations, geomagnetic variations, and variations in the electric field and atmospheric electric current during the activation of the Stromboli volcano, Italy, in 2019 are presented. Separately considered are the periods of explosive activity and the interval marked by intense emission of incandescent ash-and-gas mixture. It is shown that volcanic activity is accompanied by acoustic signal generation at the explosive stages of the eruption and by the emergence of internal gravity waves at the stage of intense effusion of ash and gas (“purging”). The characteristic variations in the Earth’s magnetic field and in the electrical parameters of the atmospheric surface layer are observed during different periods of volcanic eruption. The presented results expand the existing database and can be useful for improving the existing models and developing the new models describing the effect of volcanic activity on the geophysical environment as well as for verifying these models.