Terrestrial volcanic eruptions and their association with solar activity

TL;DR

This study investigates the correlation between volcanic eruption frequencies over 270 years and solar activity, revealing a significant 22-year periodicity and a strong correlation with the solar magnetic field, suggesting solar influence on volcanic activity.

Contribution

It presents the first detailed analysis linking volcanic eruption patterns with solar magnetic field variations over a long historical period.

Findings

A 22-year periodicity in volcanic eruptions identified.

Strong correlation (0.84) between eruptions and solar magnetic field cycles.

Eruption maxima align with solar cycles of southern magnetic polarity.

Abstract

Frequencies of volcanic eruptions in the past 270 years are compared with variations of solar activity and summary curve of principal components of the solar background magnetic field (SBMF).Frequency analysis with Morlet wavelet reveals the most pronounced period of volcanic eruptions of 22 years. There is a strong correlation (0.84) between volcanic frequencies and the summary curve of SBMF for 11 cycles after 1868. The maxima of volcanic eruptions are shown to occur during solar activity cycles with the southern magnetic polarity. The next anticipated maximum of volcanic eruptions is expected to occur during cycle 26, when SBMF have a southern magnetic polarity.