Figure 11
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(a) GOES 07 solar proton flux in the >10 MeV channel. Horizontal dashed line indicates the 10 cm−2s−1sr−1 typically used to indicate the onset of a solar proton event based on the >10 MeV solar proton flux. (b) Maximum northern hemisphere polar cap absorption at 30 MHz modelled using the Fiori & Danskin (2016) “non-optimized model” at 5-minute increments. Data are for 07–16 March 1989.
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