A study has reconstructed the immediate aftermath of the asteroid 66 million years ago to learn more about the impact of the momentous event.
Some 500,000 people live in Campi Flegrei's "red zone." Researchers say the government's emergency plan should acknowledge the possibility of tsunamis if an eruption occurs.
Indonesia's Meteorology, Geophysics and Climatology Agency urged anybody near the coastline to keep a distance of at least 500 meters.
"With the tsunami, we can only pray humbly and not celebrate much for this year's Christmas," Pastor Rusman Anita Sitorus said.
Rescue workers are still battling to reach the hardest-hit areas of Saturday's disaster.
"If there is looting again, we will quickly fire a warning shot and then shoot to immobilize," said Ida Dewa Agung Hadisaputra, a local military colonel.
The death toll is expected to rise once the rubble of more than 13,000 flattened and damaged houses is cleared away.
"There are 180 inhabitants, and we are very concerned and afraid," one resident said.
Russia's submersible drone, known to Russia as Poseidon and to the U.S. as Kanyon, may change nuclear warfare as we know it.
A number of webpages for the National Oceanic and Atmospheric Administration featured alerts that pages would not be updated.
Parts of the U.S. and Canada have been issued tsunami warnings after the 8.0-magnitude quake.
The last major earthquake from this zone was in 1700.
The quake was the second recorded in New Caledonia in 12 hours and the third in a month.
Scientists had been working to discover the origins of the Aitape skull since it was discovered in Papua New Guinea in 1929.
As frightening as they are, real tsunamis do much less damage than storms—and they may be less common than scientists realized.
It's still coming, six years later.
Scientists discover a geological structure in the Shumagin Gap similar to the one that produced the deadly Tohoku earthquake.
The largest study of Javan rhinos suggests these beasts are hovering on the edge of extinction.
The device uses 70,000 liters of water to simulate a giant wave and its effect on coastal areas.
And the ice formations would be ideal locations for finding life, if it exists.
The boat contained about 20 fish, which were still alive.
The 7.7 magnitude quake was near the town of Rabaul in the northeast of Papua New Guinea.
The massive earthquake and tsunami that hit on March 11, 2011 killed more than 15,000.