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

Progress in Earth and Planetary Science

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

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	N40W30^d	−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	S30E71^d	−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	S23W31^d	−16.2 FS
9	20121114 08:00	−108	11/09 15:12	559	276	S18E16^d	−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 FS^e

^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.