Martini, Dániel; Argese, Chiara; Di Loreto, Massimo; Mursula, K. (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-06-24)
The main objective of our study is to determine if the regular quiet daily curve (QDC) subtraction is a necessary procedure in quantifying the irregular geomagnetic variations at auroral latitudes. We define the hourly ΔH index, the absolute hour-to-hour deviation in nT of the hourly geomagnetic horizontal component, which assigns each sample to sample deviation as geomagnetic activity without ...