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Just Richter 7.0 or greater events - 112. 35 were 7.5 or greater and would almost certainly have generated
a tsunami. Of concern is that Tonga's capital city of Nuku'alofa, which houses about one sixth of Tonga's
population, is only a few meters above sea level. Maximum height for a tsunami caused by an earthquake
is 11 meters. There is no maximum for waves caused by volcanic slope or caldera collapses.
a tsunami. Of concern is that Tonga's capital city of Nuku'alofa, which houses about one sixth of Tonga's
population, is only a few meters above sea level. Maximum height for a tsunami caused by an earthquake
is 11 meters. There is no maximum for waves caused by volcanic slope or caldera collapses.
