A notable earthquake registered by the USGS as M6.1 struck under the Bismarck Sea, Papua New Guinea at 15:06 UTC on Jan 17. The agency is reporting a depth of 10 km (6.2 miles).
At time of writing, the quake has been followed by 10 strong aftershocks ranging from M4.7 to M5.6.
The epicentre was located 176.5 km (109.6 miles) SW of Lorengau (population 5,806) and 519.9 km (136.7 miles) NNE of Madang (population 27,419), Papua New Guinea.
Some 34,000 people felt light shaking and 5,326,000 weak.
There are no Tsunami warnings.
Seismic and Volcanic activity has been correlated to changes in our sun.
The recent global uptick in earthquakes and volcanic eruptions is likely attributed to the drop-off in solar activity, coronal holes, and the increase in Galactic Cosmic Rays penetrating silica-rich magma.
Check out these link for more info:
Grand Solar Minimum