The quake had a depth of 38 kilometres (23 miles), the USGS said, and was recorded in the sparsely populated West New Britain archipelago region on Sunday morning.
The shaking was felt at a Walindi Plantation Resort near the town of Kimbe about 80 kilometres away from the quake but it was described by a worker as "not too bad".
"No one really reacted, it shook, but no damage," resort worker Vanessa Hughes told AFP.
Magnitude 6.1 quake shakes Japan's Hokkaido, no tsunami warning
Tokyo (AFP) Feb 25, 2023 -
A magnitude 6.1 earthquake struck off Hokkaido in northern Japan on Saturday night, the US Geological Survey and the Japan Meteorological Agency said.
No tsunami warning was issued after the offshore quake, which shook the coastal cities of Kushiro and Nemuro.
Major Japanese media outlets carried no immediate reports of damage or injuries.
The quake hit at 10:27 pm (1327 GMT) at a depth of around 43 kilometres (27 miles), the USGS said.
An expert speaking on public broadcaster NHK warned residents to be vigilant against quakes for about a week.
Earthquakes are common in Japan, which sits on the Pacific "Ring of Fire", an arc of intense seismic activity that stretches through Southeast Asia and across the Pacific basin.
The country has strict construction regulations intended to ensure buildings can withstand strong earthquakes, and routinely holds emergency drills to prepare for a major jolt.
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