Speaker
Carlos Eduardo Quintanilha
(INPE)
Description
During the Laschamps excursion, Earth’s geomagnetic field deviated strongly from its usual dipolar structure, possibly creating a magnetosphere markedly different from today’s. Using global MHD simulations driven by a solar coronal mass ejection, this study starts the comparison of the modern IGRF field with a reconstructed Laschamps configuration to examine changes in plasma regions, current systems, and reconnection sites. Therefore, the presentation will begin the discussion of the emerging comparison framework and its possible implications for geospace conditions during geomagnetic excursions or polarization changes.
Author
Carlos Eduardo Quintanilha
(INPE)