Mw 8.0 Eastern New Guinea Region, P.N.G.
updated 4 June 2021 UTC

On 14 September 1906 a great earthquake occurred in the Eastern New Guinea Region at a depth of 35km. The seismic event occurred at 16:04:43 UTC and had an estimated moment magnitude (Mw) 8.0.

This great earthquake came exactly one lunar month after the two great earthquakes that occurred on 17 August. Not suprisingly, the lunar geometry is very similar with a huge lunar peak right before the earthquake. Just as on 16 August the Moon lined up with Jupiter and Uranus within several hours, which is only possible if Earth is very closely aligned (in-between) with the two planets. It was a recurring pattern in 1906 with all six M 7.8> earthquakes.

In September two alignments occurred on the 12th and 13th, both involving Mercury. The First alignment made the second one, which involved Earth, particularly critical. At the same time Venus made a 90° angle with Earth and Mercury, all of which were also involved in the alignments. It made it a critical convergence on the 13th around the same time lunar geometry peaked very high (index 18). Looking at the WPG peaks, we see that no less than six peaks occurred from the 10th to the 13th.

The geometry is not solely responsible for the fact that the earthquake reached M 8.0; depending on the location and amount of fault stress it could also have reached M 7.5 or it could have resulted in multiple earthquakes in the higher 6 to 7 magnitude range. Looking at 1906, multiple locations were due for a major to great earthquake.

Mercury-Sun-Venus        1906-09-12,  0:05:30  302°15'34"
Mercury-Earth-Saturn     1906-09-13, 22:03:18  342°16'23"
Sun-Mercury-Mars         1906-09-15, 11:13:21  141°18'54"

Moon-Earth-Uranus        1906-09-12, 10:19:18  275°48'37"
Earth-Moon-Jupiter       1906-09-12, 16:34:01   98°56'51"

Venus:   Mercury-Earth    1906-09-13, 22:56:49   90°00'00"
SSGI chart
SSGI depiction of planetary (PG) and lunar (LG) geometry


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