Emanating closer to Porgera, Enga Province, the quake was picked up by the Rabaul Volcanological Observatory’s Manam station in Madang Province.
An official from the RVO told Loop PNG that aftershocks are smaller earthquakes that occur after a previous main earthquake.
“The tectonic plate is just settling back into its position,” explained the RVO.
“Our Manam station picked it up because it was of a larger magnitude.
“Based on experience, aftershocks will continue for at least 5 days.”