Field | Spectrum | Radius \(a_i\) (km) | \(A_i\) (nT) | \(M_i\) | \(\alpha_i\) |
---|---|---|---|---|---|
Core | Flat | 3456 | D: \(2.52 \times 10^5\) \(9.74 \times 10^4\) | \(\tau_{\text{c}}(1)\): 935Â years \(M(\ell \ge 2) = 514\) years | 1.06 |
Lithospheric | C-based | 6287 | 0.16 | \(\infty\) | 0 |
Close magnetospheric | C-based | 12524 | D: 9.16 1.88 | \(\tau_{\text{m}}(1)\): 1.54 days \(M(\ell \ge 2) = 18\) min | 0 |
Remote magnetospheric | C-based | 235570 | 7.3 | 10.31 years | 0 |
Fluctuating magnetospheric | C-based | 13028 | D: 3 4.56 | \(\tau_{\text{fm}}(1)\): 0.36 day \(\tau_{\text{fm}}(2)\): 0.55 days \(M(\ell \ge 3) = 4\) days | \(1.15\) |
Residual ionospheric/ induced | Flat | 6324 | D: 5.48 4.39 | \(\tau_{\text{ii}}(1)\): 0.71 day \(M(\ell \ge 2) = 1.76\) day | 0.93 |
Field-aligned currents | C-based | 7917 | D: 0 1.22 | \(\tau_{\text{fac}}(1)\): 0 \(M(\ell \ge 2) = 1\) min | \(0\) |