Mw 6.6 East of South Sandwich Islands

updated 27 September 2023

report

On 3 April 2021 a strong earthquake occurred east of South Sandwich Islands at a depth of 10 km. The seismic event occurred at 01:16:39 UTC and had an estimated moment magnitude (Mw) 6.6.

The estimated primary trigger of this seismic event is a series of three planetary conjunctions from 30 March to 2 April 2021.

A convergence of two planetary conjunctions occurred on 30 March. The first conjunction with Earth, Mercury and Neptune occurred at 03:19 UTC. The second conjunction with the Sun, Mercury and Saturn occurred later that day at 18:04 UTC. These conjunctions converged with a lunar conjunction with Uranus. Two strong tremors occurred on 1 April. On 2 April a planetary conjunction with the Sun, Mercury and Jupiter converged with a lunar conjunction with Mars. Two more strong tremors associated with this planetary and lunar geometry occurred later on 3 and early on 5 April.

#MoonUranus #MoonMars

SSGI

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

SSGI chart

SSGI SUM graph of critical planetary (PG) geometry

geometry

Earth-Mercury-Neptune     2021-03-30, 03:19:13  351°03'51"
Sun-Mercury-Saturn        2021-03-30, 18:04:28  306°03'50"
Sun-Mercury-Jupiter       2021-04-02, 06:43:46  314°35'33"

Earth:   Venus-Jupiter    2021-03-27, 11:37:48   45°00'00"
Venus:   Mars-Uranus      2021-03-28, 14:39:38   90°00'00"
Mercury: Venus-Jupiter    2021-03-29, 04:05:57   90°00'00"
Mercury: Earth-Saturn     2021-03-30, 04:15:54  135°00'00"
Sun:     Mercury-Neptune  2021-03-30, 13:41:54   45°00'00"
Mercury: Saturn-Neptune   2021-03-30, 23:57:19   45°00'00"
Earth:   Mercury-Uranus   2021-03-31, 16:59:13   45°00'00"
Sun:     Mercury-Uranus   2021-03-31, 22:56:45   90°00'00"
Earth:   Mercury-Saturn   2021-04-02, 03:20:53   45°00'00"
Mercury: Earth-Uranus     2021-04-02, 04:47:40  135°00'00"
Mercury: Earth-Jupiter    2021-04-03, 21:20:44  135°00'00"
Sun:     Venus-Mars       2021-04-05, 22:34:58   90°00'00"

Moon-Earth-Mercury        2021-03-27, 06:54:48  346°24'12"
Moon-Earth-Neptune        2021-03-27, 14:27:27  350°58'17"
Moon-Earth-Sun            2021-03-28, 18:09:12    7°59'40"
Moon-Earth-Venus          2021-03-28, 19:15:54    8°41'03"
Moon-Earth-Uranus         2021-03-30, 19:21:33   38°39'47"
Moon-Earth-Mars           2021-04-02, 10:13:42   77°00'41"

Earth:   Moon-Mars        2021-03-27, 01:36:26   90°00'00"
Earth:   Moon-Uranus      2021-03-27, 18:37:14  135°00'00"
Earth:   Moon-Saturn      2021-03-27, 22:18:28  135°00'00"
Earth:   Moon-Jupiter     2021-03-28, 17:01:14  135°00'00"
Earth:   Moon-Mars        2021-03-30, 05:37:16  135°00'00"
Earth:   Moon-Neptune     2021-03-30, 15:12:44  135°00'00"
Earth:   Moon-Mercury     2021-03-30, 16:40:49  135°00'00"
Earth:   Moon-Saturn      2021-03-30, 23:07:38   90°00'00"
Earth:   Moon-Jupiter     2021-03-31, 18:22:14   90°00'00"
Earth:   Moon-Sun         2021-03-31, 23:44:01  135°00'00"
Earth:   Moon-Venus       2021-04-01, 02:19:52  135°00'00"
Earth:   Moon-Neptune     2021-04-02, 17:17:12   90°00'00"
Earth:   Moon-Uranus      2021-04-02, 21:45:19  135°00'00"
Earth:   Moon-Saturn      2021-04-03, 01:52:39   45°00'00"
Earth:   Moon-Mercury     2021-04-03, 04:56:54   90°00'00"
Earth:   Moon-Jupiter     2021-04-03, 23:03:11   45°00'00"
Earth:   Moon-Sun         2021-04-04, 09:37:49   90°00'00"
Earth:   Moon-Venus       2021-04-04, 14:08:50   90°00'00"
Earth:   Moon-Mars        2021-04-05, 20:34:01  135°00'00"

map

earthquake map