Astronomy:Magnetic pulsations
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Short description: Oscillations in a planet's magnetic field
Magnetic pulsations are extremely low frequency disturbances in the Earth's magnetosphere driven by its interactions with the solar wind.[1] These variations in the planet's magnetic field can oscillate for multiple hours when a solar wind driving force strikes a resonance.[2] This is a form of Kelvin–Helmholtz instability.[1] The intensity, frequency, and orientation of these variations is measured by Intermagnet.[2]
In 1964, the International Association of Geomagnetism and Aeronomy (IAGA) proposed a classification of magnetic pulsations into continuous pulsations (Pc) and irregular pulsations (Pi).[1][3]
References
- ↑ 1.0 1.1 1.2 "Magnetic pulsations". http://roma2.rm.ingv.it/en/themes/22/magnetic_pulsations.
- ↑ 2.0 2.1 "A MUSICAL NOTE FROM THE MAGNETOSPHERE". https://spaceweather.com/archive.php?view=1&day=20&month=01&year=2021. "High above the Arctic Circle in Lofoten, Norway, citizen scientist Rob Stammes operates a space weather monitoring station. His sensors detect ground currents, auroras, radio bursts, and disturbances in Earth's magnetic field. Yesterday, he says, "I received a musical note from the magnetosphere.""
- ↑ McPherron, R.L. (2005). "Magnetic Pulsations: Their Sources and Relation to Solar Wind and Geomagnetic Activity". Surv Geophys 26: 545–592. doi:10.1007/s10712-005-1758-7.
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