2023
DOI: 10.21203/rs.3.rs-3365273/v1
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A fresh look at the intensity and impulsive strength of geomagnetic storms

V. Manu,
N. Balan,
Qing-He Zhang
et al.

Abstract: We notice an inconsistency in the geomagnetic storms having positive main phase onset (MPO >0 nT). The inconsistency makes the values of the storm indices (Dst and SymH) during the main phase and recovery phase significantly less than their actual values. We correct the inconsistency in 848 such storms (out of 1164 storms) during 1981-2019 by raising the 0-level of SymH to the MPO-level. The physically meaningful correction considers the full range of the main phase, increases the storm intensity (SymHMin) … Show more

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