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Links of Terrestrial Volcanic Eruptions to Solar Activity and Solar Magnetic Field View all abstracts by submitter

Valentina Zharkova   Submitted: 2023-05-31 09:55

We compare frequencies of volcanic eruptions (VEs) in the past 270 years with variations of solar activity and summary curve of eigen vectors (EVs) of the solar background magnetic field (SBMF) from the WSO synoptic magnetic maps. In the period 1868 - 1950 and 1990-2020 the total numbers of volcanic eruptions are maximal during the maxima or the descending phase of the magnetic field cycles with the dominant southern polarity, and minimal during the maxima or ascending phase of the magnetic field cycles with the northern polarity. While in the earlier years (1762-1868) this link disappeared. The frequency analysis of VEs with Morlet wavelet reveals the dominant period of about 22 years and weaker periods of 10.7 and 55-70 years. Comparison of VE frequencies with the modulus summary curve (MSC) of EVs of SBMF for solar cycles after 1868 reveals a strong positive correlation (coefficient of 0.84) with the maxima of VEs occurring when the summary curve of EVs derived from the solar magnetic fields have the southern polarity, or more active southern hemisphere of the Sun, and minima when the northern one.

Authors: Vasilieva Irina & Zharkova Valentina
Projects: None

Publication Status: Published atGlobal Journal of Science Frontier Research: A Physics and Space Science Volume 23 Issue 3 Version 1.0 Year 2023
Last Modified: 2023-05-31 10:29
Go to main E-Print page  A comparative study of resistivity models for simulations of magnetic reconnection in the solar atmosphere  Periodicities in Solar Activity, Solar Radiation and Their Links with Terrestrial Environment  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

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