Table 1 Amplitudes and signs of secular acceleration changes at the four observatories as determined from changes in slope of the piecewise linear fitting (Figs. 2, 3, 4)
From: The 2014 geomagnetic jerk as observed by southern African magnetic observatories
Interval | HER | HBK | KMH | TSU |
|---|---|---|---|---|
X (nT/year2) | ||||
2013–2014 | – | – | 48.7 | – |
2014–2015 | 17.8 | 27.3 | – | |
Y (nT/year2) | ||||
2013–2014 | – | – | 36.0 | 30.7 |
2014–2015 | −4.7 | −7.4 | – | – |
Z (nT/year2) | ||||
2013–2014 | −20.0 | −34.4 | 18.7 | 12.4 |
2014–2015 | 24.8 | 42.2 | – | – |