SINGAPORE (Reuters) - An earthquake of 6.4 magnitude struck 500 km (310 miles) west of the Pacific island of Tonga on Saturday, the U.S. Geological Survey (USGS) said, but there were no immediate ...
"In addition to volcanic hazards, the new seafloor maps reveal that Tonga is also vulnerable to submarine landslides. These can occur due to the steep seamounts on the seafloor and the frequent ...
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