Characteristic Scales Near the Magnetopause(Song, 1995)

Length Physical Scale Phenomena

20~500 m Debye Length Affect E field measurement

0.5 km Electron gyroradius No coherent macrostructure, waves

1 km Electron skin depth No coherent macrostructure, waves

5 km Lower hybrid radius Waves, sharp edges?

50~100 km Ion gyroradius Sharp edges, waves

102~103 km 10~100 ion gyroradii Layers, FTEs, waves, eddies?

(0.1~1 Re)

~10 Re Size of magnetosphere Tangential scale of MP surface waves

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