L shell


ECSS-E-ST-20-06C Rev.1


parameter of the geomagnetic field


  • NOTE 1 It is also referred as L, and is used as a co-ordinate to describe positions in near-Earth space.
  • NOTE 2 L or L shell has a complicated derivation based on an invariant of the motion of charged particles in the terrestrial magnetic field. However, it is useful in defining plasma regimes within the magnetosphere because, for a dipole magnetic field, it is equal to the geocentric altitude in Earth-radii of the local magnetic field line where it crosses the equator.
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