Sun resonant forcing of Mars, Moon, and Earth seismicity
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Global seismicity on all three solar system's bodies with in situ measurements – Earth, Moon, and Mars – is due mainly to mechanical Rieger resonance (RR) of the solar wind's macroscopic flapping, driven by the well-known PRg= 154-day Rieger period and detected commonly in most heliophysical data types and the interplanetary magnetic field (IMF). Thus, InSight mission marsquakes rates are periodic with PRg as characterized by a very high (>>12) fidelity Φ=2.8 10^6 and by being the only >99 highest planetary energies; the longest-span (v.9) release of raw data revealed the entire RR, excluding a tectonically active Mars. For check, I analyze rates of Oct 2015-Feb 2019, Mw5.6+ earthquakes, and all (1969-1977) Apollo mission moonquakes. To decouple magnetosphere and IMF effects, I study Earth and Moon seismicity during traversals of the Earth magnetotail vs. IMF. The analysis showed with >99-67 majority of) moonquakes and Mw5.6+ earthquakes also recur at Rieger periods. About half of the spectral peaks split but also into clusters that average to the usual Rieger periodicities, where magnetotail reconnecting clears the signal. Earlier claims that solar plasma dynamics could be seismogenic due to electrical surging or magnetohydrodynamic interactions between magnetically trapped plasma and water molecules embedded within solid matter are confirmed. This result calls for reinterpreting the seismicity phenomenon and for reliance on global magnitude scales. The predictability of solar-wind macroscopic dynamics is now within reach for the first time, which will benefit seismic and weather prediction and the safety of space missions.
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