Blar i Bergen Open Research Archive på forfatter "Chapman, Sandra"
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Extreme Event Statistics in Dst, SYM-H, and SMR Geomagnetic Indices
Bergin, A.; Chapman, Sandra; Watkins, N.W.; Moloney, N.R.; Gjerløv, Jesper (Journal article; Peer reviewed, 2023)Extreme space weather events are rare, and quantifying their likelihood is challenging, often relying on geomagnetic indices obtained from ground-based magnetometer observations that span multiple solar cycles. The Dst ... -
Global Dynamical Network of the Spatially Correlated Pc2 Wave Response for the 2015 St. Patrick's Day Storm
Chaudhry, S.; Chapman, Sandra; Gjerløv, Jesper; Beggan, C. D. (Journal article; Peer reviewed, 2023)We show the global dynamics of spatial correlation of Pc2 wave activity can track the evolution of the 2015 St. Patrick's Day geomagnetic storm for an 8 hr time window around onset. The global spatially coherent response ... -
Network analysis of geomagnetic substorms using the SuperMAG database of ground-based magnetometer stations
Dods, Joe; Chapman, Sandra; Gjerløv, Jesper (Peer reviewed; Journal article, 2015-09-26)The overall morphology and dynamics of magnetospheric substorms is well established in terms of the observed qualitative auroral features seen in ground-based magnetometers. This paper focuses on the quantitative ...