Open Access
Table 2
Summary of geomagnetic indices.
Index | Time resolution | Comment |
---|---|---|
Hp (incl. Hp90, Hp60, Hp30) | 90, 60, 30 min | Based on Kp method |
Kp | 3 h | Sub-auroral and mid-latitude |
AE (incl. AL, AU, AO) | 1 min | AE = AU − AL: overall electrojet activity; AO = 0.5(AU + AL): equivalent zonal current |
PC | 1 min | Energy input from solar wind, merging electric field |
Dst | 1 h | Magnetospheric ring current intensity |
Wp | 1 min | Pi2-activity, timing of substorm onset |
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