The quake briefly prompted a tsunami alert for parts of Vanuatu, according to the U.S ... U.S.G.S. scientists to update the shake-severity map. An aftershock is usually a smaller earthquake ...

Vanuatu's location on a subduction zone—where the Indo-Australian Plate slides beneath the Pacific Plate—makes earthquakes exceeding magnitude 6 not uncommon. The country's buildings are generally ...

Map showing the intensity ... were registered as being in Vanuatu and that his government was "deeply concerned" about the situation there. Vanuatu's location on a subduction zone—where the ...