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The Earth's inner magnetosphere contains different charged particle populations, such as the Van Allen radiation belts, ring current particles, and plasmaspheric particles. Their energy range varies from eV to several MeV, and the interplay among the charged particles provide feedback mechanisms which couple all those populations together.
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Ring current particles can generate various waves, for example, EMIC waves and chorus waves, which play important roles in the dynamic evolution of the radiation belts through wave-particle interactions. Ring current electrons can be accelerated to relativistic radiation belt electrons. Plasmaspheric medium can also affect these processes.
In addition, precipitation of ring current and radiation belt particles will influence the ionosphere, while up-flows of ionospheric particles can affect dynamics in the inner magnetosphere. Understanding these coupling processes is crucial. We invite epoch evolution watch online broad range of theoretical, modelling, and observational studies focusing on the dynamics of the inner magnetosphere of the Earth and outer planets, including the coupling of the inner magnetosphere and ionosphere and coupling between the solar wind disturbances and various magnetospheric processes. Contributions from all relevant fields, including theoretical studies, numerical modelling, observations from satellite and ground-based missions are welcome. Activation of the text chat sets a cookie in your browser that is automatically deleted at the end of the conference. The message " " has been sent by nickname.
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Unban the user:. An attendee might be able to create a new nickname and re-enter this chat. In case you have any questions or need further assistance please contact us at: egu21 copernicus. Naturally occurring chorus emissions are a class of electromagnetic waves found in go here space environments of the Earth and other magnetized planets.
They play an essential role in accelerating high-energy electrons forming the hazardous radiation belt environment. Chorus typically occurs in two distinct frequency bands separated by a gap. The origin of this two-band structure remains a year old question. We demonstrate, using numerical simulations, that the initially excited single-band chorus waves alter the electron distribution immediately via Landau resonance, epoch evolution watch online suppresses the electron anisotropy at medium energies.
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This naturally divides the electron anisotropy into a low and a high energy components which excite the upper-band and lower-band chorus waves, respectively. This mechanism may also apply to the generation of chorus waves in other magnetized planetary magnetospheres. How to cite: Li, J. Auroral precipitation plays an important role in magnetosphere-ionosphere-thermosphere MIT coupling by enhancing ionospheric ionization and conductivity at high latitudes.
Diffuse electron precipitation refers to epoch evolution watch online electrons from the plasma sheet that are lost in the ionosphere.
Diffuse precipitation makes the largest contribution to the total precipitation energy flux and is expected to have substantial impacts on the ionospheric conductance and affect the electrodynamic coupling between the magnetosphere and ionosphere-thermosphere. Epoch evolution watch online theory and observational analysis also demonstrate that diffuse precipitation is subject to multiple reflection effects, i. Diffuse precipitation in MAGE is derived from the electron distribution in the Rice Convection Model RCMa ring current model that solves for energy dependent drifts of electrons and ions. With controlled numerical experiments, we investigate 1. How multiple reflection effects impact the ionosphere-thermosphere and their coupling with the magnetosphere. Our study demonstrates that diffuse electron precipitation plays a critical role in determining the location and structure of SAPS.
The multiple reflection effects make diffuse precipitation number flux and energy flux a few times higher than the unmodified precipitation, resulting in a greatly enhanced auroral ionospheric conductance, lower cross polar cap potential, higher total field-aligned currents, and changes in global thermospheric winds and temperature. Therefore, diffuse electron precipitation has both local and global impacts on MIT coupling. How to cite: Lin, Epoch evolution watch online. We now have the appropriate combination of data and physics-based model to address this fundamental science question.]