Skip to main content

Advertisement

Table 2 Major geomagnetic storms of cycle 24 (Dst < −100 nT)

From: Short-term variability of the Sun-Earth system: an overview of progress made during the CAWSES-II period

Number Date and time of storm Dst (nT) CME onset V a km/s W b degree Eruption location Bz (nT) location c
1 20110806 04:00 −107 08/04 04:12 1,315 H N19W36 −21.4 Sh
2 20110927 00:00 −103 09/24 12:48 1,915 H N15E58 −28.7 Sh
3 20111025 02:00 −137 10/22 01:25 593 H N40W30d −19.9 Sh
4 20120309 09:00 −133 03/07 01:36 1,825 H N17E27 −17.7 FS
5 20120424 05:00 −107 04/19 15:12 540 142 S30E71d −15.3 FS
6 20120715 18:00 −125 07/12 16:48 885 H S15W01 −18.6 FS
7 20121001 04:00 −133 09/28 00:12 947 H N06W34 −20.0 Sh
8 20121009 09:00 −111 10/05 02:48 612 284 S23W31d −16.2 FS
9 20121114 08:00 −108 11/09 15:12 559 276 S18E16d −18.9 NS
10 20130317 21:00 −132 03/15 07:12 1,063 H N11E12 −11.1 Sh
11 20130601 09:00 −119 CIR ---- ---- CH −21.4 IR
12 20140219 09:00 −112 02/16 10:00 634 H S11E01 −15.5 FSe
  1. aCME speed with an average value of 1,021 km/s. bCME width (H = full halos: 7/11 or 63%). cOrigin of negative Bz: Sh, sheath; FS, fully south (axis of the high inclination cloud pointing south); NS, north south cloud (negative Bz in the rear end of the cloud); IR, interface region between fast and slow winds. dDisappearing solar filament (DSF) events with the centroid of the filament given. eThe sheath is a preceding FS MC.