Nuclear Magnetohydrodynamic EMP, Solar Storms, and Substorms

Details Nuclear Magnetohydrodynamic EMP, Solar Storms, and Substorms Nuclear Magnetohydrodynamic EMP, Solar Storms, and Substorms

2003-07-12

arxiv.org/abs/physics/0307067v1

Int.J.Mod.Phys.B6:3353-3380,1992

Physics

General Physics

29 pages, 14 figures, 5 tables

Scientific paper

10.1142/S0217979292001481

In addition to a fast electromagnetic pulse (EMP), a high altitude nuclear burst produces a relatively slow magnetohydrodynarnic EMP (MHD EMP), whose effects are like those from solar storm geomagnetically induced currents (SS GIC). The MHD EMP electric field E < 10^-1 V/m and lasts < 10^2 sec, whereas for solar storms E > 10^-2 V/m and lasts >10^3 sec. Although the solar storm electric field is lower than MHD EMP, the solar storm effects are generally greater due to their much longer duration. Substorms produce much smaller effects than SS GIC, but occur much more frequently. This paper describes the physics of such geomagnetic disturbances and analyzes their effects.

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