ELECTROMAGNETIC ULF/ELF OSCILLATIONS CAUSED BY THE ERUPTION OF THE TONGA VOLCANO
Journal Title: Solar-Terrestrial Physics - Year 2023, Vol 9, Issue 1
Abstract
The eruption of the Tonga volcano on January 13 and 15, 2022 and related intense lightning activity led to the excitation of a number of specific electromagnetic oscillations in different frequency ranges. We examine properties of these oscillations, using data from magnetometers of various types located in Kamchatka and in the Pacific region. We confirmed that there might have been a geomagnetic response to the formation of an acoustic resonance between the Earth surface and the ionosphere: localized harmonic oscillations with a frequency 3.5–4.0 mHz, which lasted for ~1.5 hr, were detected ~15 min after the beginning of the eruption at distance of ~800 km. An increase was observed in the intensity of the Schumann resonance at stations in the Far East. Broadband emission stimulated by intense volcanic lightning was detected to occur in the Pc1 range (2–5 Hz). The emission presumably results from the excitation of the magnetosonic waveguide in the upper ionosphere by lightning activity.
Authors and Affiliations
Martines-Bedenko V. A. , Pilipenko V. A. , Shiokawa K. , Akbashev R. R.
Keywords
Related Articles
- EP ID EP714642
- DOI 10.12737/stp-91202306
- Views 77
- Downloads 0
GEOMAGNETIC VARIATIONS IN THE FREQUENCY RANGE 2.5–12 HZ IN THE IONOSPHERIC F LAYER AS MEASURED BY SWARM SATELLITES
We have analyzed geomagnetic variations in the 2.5–12 Hz frequency range in the ionospheric F layer above the electron density maximum, using data from two SWARM satellites. The analysis is based on the data obtained und...
INFLUENCE OF GEOMAGNETIC DISTURBANCES ON SCINTILLATIONS OF GLONASS AND GPS SIGNALS AS OBSERVED ON THE KOLA PENINSULA
We have compared effects of geomagnetic disturbances during magnetic storms of various types (CME and CIR) and during an isolated substorm on scintillations of GLONASS and GPS signals, using a Septentrio PolaRx5 receiver...
SOLAR ACTIVITY CYCLE 25: THE FIRST THREE YEARS
We analyze features of current solar activity cycle 25 for the first three years of its development (2020–2022). Compared to cycle 24, the current cycle is shown to exceed the previous one in the number of sunspot groups...
MONITORING OF GEOMAGNETIC DISTURBANCES USING THE GLOBAL SURVEY METHOD IN REAL TIME
A method for forecasting geomagnetic storms using the realization of the global survey method in real time is presented. The method is based on data from the worldwide network of neutron monitors NMDB. Using this method,...
PRELIMINARY RESULTS OF SIMULTANEOUS RECORDING OF AURORAL AND GEOMAGNETIC PULSATIONS AT THE ISTP SB RAS STATION ISTOK
The paper presents the results on first synchronous observations of variations in auroral luminosity and geomagnetic field, made with high temporal resolution at the ISTP SB RAS high-latitude station Istok (70° N, 88° E)...