I'm not talking about uplift, it's a different rare phonominon that generates much larger waves than standard tsunamis and has the potential to wipe out cities.
"Prehistoric sedimentary deposits on the Kohala Volcano, Lanai and Molokai controversially indicates that landslides from the flank of the Kilauea and Mauna Loa volcanoes in Hawaii may have triggered past megatsunamis, most recently at 120,000 BP. A future tsunami event is also possible, with the tsunami potentially reaching up to about 1 kilometre (3,300 ft) in height. According to a documentary called National Geographic's Ultimate Disaster: Tsunami, if a big landslide occurred at Mauna Loa or the Hilina Slump, a 30 metres (98 ft) tsunami would take only thirty minutes to reach Honolulu, Hawaii. There, hundreds of thousands of people could be killed as the tsunami leveled Honolulu and traveled 25 kilometres (16 mi) inland."
Edited by Seeker79, 05 January 2013 - 03:20 PM.