Home > Research > Publications & Outputs > Temporal, directional, and spatial statistics o...

Electronic data

View graph of relations

Temporal, directional, and spatial statistics of extreme dB/dt

Research output: Contribution to conference - Without ISBN/ISSN Otherpeer-review

Publication date19/10/2020
<mark>Original language</mark>English
EventEuropean Space Weather Symposium - Online
Duration: 2/11/20206/11/2020


SymposiumEuropean Space Weather Symposium
Abbreviated titleESWS2020
Internet address


Extreme geomagnetic fluctuations (dB/dt) have previously been modelled from 1-min cadence data. In this talk we show how occurrence rates for large and extreme dB/dt vary are modelled on timescales from 1 s to 60 min for both ramp changes (i.e. the change in B over n minutes) and RMS variations (of 1-min dB over n minutes), and examine their dependence on geomagnetic latitude, local time, and compass direction. For the 1-min dataset, we also summarise (i) new methods to improve return level estimates by combining generalised Pareto distributions from multiple directional sectors, and (ii) an assessment of the spatial coherence of extremes in dB/dt (pairwise extremal dependence between magnetometer sites worldwide).

Bibliographic note

This is a "Quick View" presentation.