Impact plasma from a Caloris-size basin formation amplifies Mercury's ancient magnetospheric field from 0.5-0.9 uT to ~13 uT, recording SRM that yields ~5 nT crustal fields at 20 km altitude antipodal to the basin.
The left column shows the evolution of the (log-scale) plasma mass density, ๐, with velocity flow direction (white arrows)
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Impact Plasma Amplification of the Ancient Mercury Magnetic Field
Impact plasma from a Caloris-size basin formation amplifies Mercury's ancient magnetospheric field from 0.5-0.9 uT to ~13 uT, recording SRM that yields ~5 nT crustal fields at 20 km altitude antipodal to the basin.