140 km SSW of Kokopo, Papua New Guinea

A M6.1 earthquake struck 140 km SSW of Kokopo, Papua New Guinea at a depth of 10 km. This early 21st century seismic event was recorded and analyzed by the US Geological Survey. This earthquake occurred in a subduction zone, where one plate descends beneath another into the mantle. Subduction zones generate the planet's most powerful earthquakes.