Mw 6.9 South Sandwich Islands Region

updated 28 September 2023

report

On 16 August 2021 a strong earthquake occurred at South Sandwich Islands Region at a depth of 10 km. The seismic event occurred at 11:10:36 UTC and had an estimated moment magnitude (Mw) 6.9.

The estimated primary trigger of this seismic event is the major seismic activity in the region on 12 August 2021.

This is a strong aftershock of the major earthquakes in the region on 12 August.

#aftershock

SSGI

SSGI COMMON graph of critical planetary (PG) and lunar (LG) geometry

SSGI chart

SSGI SUM graph of critical planetary (PG) geometry

geometry

Sun-Mercury-Mars          2021-08-09, 09:59:46  168°10'22"
Venus-Earth-Neptune       2021-08-10, 00:05:30  352°23'03"
Mercury-Sun-Neptune       2021-08-10, 03:12:33  351°16'09"
Mercury-Earth-Jupiter     2021-08-11, 01:07:10  328°05'35"
Mars-Sun-Neptune          2021-08-16, 13:22:32  351°18'29"

Mercury: Venus-Mars       2021-08-10, 07:05:35   90°00'00"
Sun:     Mercury-Saturn   2021-08-11, 01:22:49  135°00'00"
Sun:     Mercury-Uranus   2021-08-11, 09:22:59  135°00'00"
Earth:   Venus-Saturn     2021-08-11, 12:45:15  135°00'00"
Sun:     Venus-Earth      2021-08-12, 00:34:23   90°00'00"
Mercury: Venus-Neptune    2021-08-12, 05:12:43   90°00'00"
Venus:   Mercury-Neptune  2021-08-12, 18:33:30   90°00'00"
Sun:     Mercury-Earth    2021-08-13, 18:20:05  135°00'00"
Venus:   Earth-Uranus     2021-08-13, 20:03:08   45°00'00"
Sun:     Mercury-Venus    2021-08-14, 06:26:46   45°00'00"
Mercury: Venus-Uranus     2021-08-14, 15:41:55  135°00'00"
Venus:   Mercury-Uranus   2021-08-15, 05:59:21   45°00'00"
Sun:     Mercury-Jupiter  2021-08-15, 06:09:00  135°00'00"
Mercury: Venus-Saturn     2021-08-15, 09:44:00   45°00'00"
Venus:   Earth-Saturn     2021-08-15, 22:11:39   45°00'00"
Earth:   Venus-Uranus     2021-08-15, 23:56:12  135°00'00"
Venus:   Mercury-Saturn   2021-08-16, 14:57:41  135°00'00"
Sun:     Venus-Jupiter    2021-08-16, 15:29:27   90°00'00"
Venus:   Mercury-Earth    2021-08-18, 09:23:23   90°00'00"

Earth-Moon-Mercury        2021-08-09, 05:02:53  144°35'47"
Moon-Earth-Jupiter        2021-08-09, 11:44:26  328°17'26"
Earth-Moon-Mars           2021-08-10, 03:02:18  156°48'20"
Moon-Earth-Neptune        2021-08-11, 06:35:04  352°21'24"
Earth-Moon-Venus          2021-08-11, 09:32:17  174°02'19"
Moon-Earth-Uranus         2021-08-15, 00:40:03   44°29'05"

Earth:   Moon-Saturn      2021-08-11, 09:49:58  135°00'00"
Earth:   Moon-Uranus      2021-08-11, 19:02:32  135°00'00"
Earth:   Moon-Sun         2021-08-12, 03:35:39   45°00'00"
Earth:   Moon-Jupiter     2021-08-12, 18:20:53  135°00'00"
Earth:   Moon-Mercury     2021-08-13, 01:09:14   45°00'00"
Earth:   Moon-Mars        2021-08-13, 13:30:50   45°00'00"
Earth:   Moon-Neptune     2021-08-14, 12:21:17  135°00'00"
Earth:   Moon-Saturn      2021-08-14, 15:14:45   90°00'00"
Earth:   Moon-Venus       2021-08-14, 22:32:03   45°00'00"
Earth:   Moon-Sun         2021-08-15, 14:40:35   90°00'00"
Earth:   Moon-Jupiter     2021-08-15, 22:47:10   90°00'00"
Earth:   Moon-Mercury     2021-08-16, 17:19:39   90°00'00"
Earth:   Moon-Mars        2021-08-16, 21:57:31   90°00'00"
Earth:   Moon-Neptune     2021-08-17, 16:47:24   90°00'00"
Earth:   Moon-Saturn      2021-08-17, 19:23:45   45°00'00"
Earth:   Moon-Uranus      2021-08-18, 05:07:19  135°00'00"
Earth:   Moon-Venus       2021-08-18, 09:56:53   90°00'00"

map

earthquake map