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Table 1

The five main classes of SRBs which originate in the same of the solar atmosphere that are associated with geo-effective disturbances known as space weather (White, 2007; Yue et al., 2013).

SRB Description of spectrum Duration Frequency range Associated origin mechanism
Type I Short duration enhancements of narrow bandwidth usually appearing in groups. A few seconds 80–200 MHz Active regions
Eruptive prominences
Type II Slow drift towards lower frequencies over the duration of the burst. Often accompanied by a harmonic. 3–30 min 20–150 MHz MHD shocks
Proton emission events
Type III Short duration. Quickest frequency drift rate of all metric radio bursts (White, 2007) 1–3 s 10 kHz–1 GHz Active regions
Type IV Moving 30 min – 2 h 20–400 MHz Flares, proton emissions
Stationary Hours – days 20 MHz–2 GHz Eruptive prominences
MHD shocks
Continuum 3–45 min 25–200 MHz Flares, proton emissions
Type V Always observed trailing a Type III burst. 1–3 min 10–200 MHz Active regions, Flares

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