employee from 01.01.2023 to 01.01.2026
Russian Federation
UDC 55
UDC 550.34
UDC 550.383
CSCSTI 37.01
CSCSTI 37.15
CSCSTI 37.25
CSCSTI 37.31
CSCSTI 38.01
CSCSTI 36.00
CSCSTI 37.00
CSCSTI 38.00
CSCSTI 39.00
CSCSTI 52.00
Russian Classification of Professions by Education 05.00.00
Russian Library and Bibliographic Classification 26
Russian Trade and Bibliographic Classification 63
BISAC SCI SCIENCE
Following the MW 8.8 Kamchatka earthquake on 29 July 2025, we observed coseismic Multiple Cusp Signatures (MCS) in successive 1-min ionograms recorded by the VIPIR ionosonde near Koror, Palau (PL407). We attribute these signatures to plasma displacements driven by three seismogenic infrasonic waves generated by teleseismic SKiKP phases. Doppler measurements reveal downward plasma displacements associated with each infrasonic wave. We further propose that the Palau barrier reef lagoon may serve as an efficient infrasonic wave generator, enabling MCS formation despite strong seismic attenuation over the ~4350 km epicentral distance.
High altitude acoustic wave, coseismic ionospheric disturbance, SKiKP, ScS, Multiple Cusp Signature, VIPIR ionosonde, 2025 Kamchatka megathrust earthquake
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