Mw 7.1 Vanuatu

updated 20 February 2025

report

On 20 October 2015 a major earthquake occurred at Vanuatu at a depth of 147 km. The seismic event occurred at 21:52:03 UTC and had an estimated moment magnitude (Mw) 7.1.

The estimated primary trigger of this seismic event is critical lunar geometry on 16 and 20 October 2015.

In October 2015 Earth moved between Venus and Neptune, which resulted in a tight convergence of critical lunar geometry with both planets. The planetary conjunction Venus-Earth-Neptune was exact on the 17th. On 16 October opposite right-angle lunar geometry occurred with Venus and Neptune within 20 minutes. On 20 October semi-right angle lunar geometry occurred with both planets again. A notable planetary conjunction occurred on the 19th with Venus, the Sun and Saturn.

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SSGI

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

SSGI chart
SSGI SUM graph of critical planetary (PG) geometry

geometry

Venus-Mars-Jupiter        2015-10-14, 05:58:07    0°00'00"
Venus-Earth-Neptune       2015-10-17, 02:43:52    0°00'00"
Earth-Mars-Jupiter        2015-10-17, 22:34:56    0°00'00"
Venus-Sun-Saturn          2015-10-19, 17:55:51    0°00'00"

Sun:     Earth-Saturn     2015-10-14, 17:22:16  135°00'00"
Venus:   Earth-Saturn     2015-10-15, 05:15:46   90°00'00"
Sun:     Mercury-Mars     2015-10-15, 14:35:08   45°00'00"
Sun:     Earth-Jupiter    2015-10-15, 21:41:59  135°00'00"
Sun:     Earth-Neptune    2015-10-17, 09:01:34   45°00'00"
Sun:     Mercury-Venus    2015-10-17, 14:30:08   45°00'00"
Sun:     Mercury-Uranus   2015-10-17, 17:40:49   90°00'00"
Sun:     Venus-Uranus     2015-10-18, 02:33:45   45°00'00"
Sun:     Mercury-Saturn   2015-10-18, 03:59:14  135°00'00"
Sun:     Mercury-Jupiter  2015-10-18, 09:00:24   45°00'00"
Sun:     Mercury-Neptune  2015-10-18, 14:07:58  135°00'00"
Sun:     Mercury-Earth    2015-10-18, 19:55:29   90°00'00"
Sun:     Venus-Jupiter    2015-10-20, 14:30:24   90°00'00"
Sun:     Venus-Neptune    2015-10-21, 07:14:02   90°00'00"
Mercury: Earth-Mars       2015-10-21, 11:23:49  135°00'00"
Earth:   Saturn-Uranus    2015-10-22, 14:07:45  135°00'00"

Earth-Moon-Saturn         2015-10-16, 13:36:22    0°00'00"

Earth:   Moon-Neptune     2015-10-13, 05:46:16  135°00'00"
Earth:   Moon-Mars        2015-10-13, 14:08:17   45°00'00"
Earth:   Moon-Jupiter     2015-10-13, 17:55:59   45°00'00"
Earth:   Moon-Mercury     2015-10-15, 10:37:01   45°00'00"
Earth:   Moon-Uranus      2015-10-16, 15:16:34  135°00'00"
Earth:   Moon-Venus       2015-10-16, 22:43:42   90°00'00"
Earth:   Moon-Neptune     2015-10-16, 23:01:47   90°00'00"
Earth:   Moon-Sun         2015-10-17, 01:03:05   45°00'00"
Earth:   Moon-Mars        2015-10-17, 11:47:45   90°00'00"
Earth:   Moon-Jupiter     2015-10-17, 12:10:11   90°00'00"
Earth:   Moon-Mercury     2015-10-19, 09:38:10   90°00'00"
Earth:   Moon-Saturn      2015-10-20, 03:14:07   45°00'00"
Earth:   Moon-Uranus      2015-10-20, 03:52:27   90°00'00"
Earth:   Moon-Neptune     2015-10-20, 11:14:32   45°00'00"
Earth:   Moon-Venus       2015-10-20, 17:23:56  135°00'00"
Earth:   Moon-Sun         2015-10-20, 19:57:39   90°00'00"
Earth:   Moon-Jupiter     2015-10-21, 00:42:10  135°00'00"
Earth:   Moon-Mars        2015-10-21, 03:09:23  135°00'00"
  					

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