Many tsunamis are initiated by landslides that displace large amounts of water. These include rockfalls and avalanches, such as the huge avalanche that triggered a 200-foot- (60-m-) high tsunami in Lituya Bay, Alaska. Submarine landslides tend to be larger than avalanches that originate above the water line, and they have generated some of the largest tsunamis on records. Many submarine landslides are earthquake-induced, whereas others are triggered by storm events and by increases in pressure on the sediments on the continental shelf induced by rises in sea level.
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Preparing for Armageddon, Natural Disasters, Nuclear Strikes, the Zombie Apocalypse, and Every Other Threat to Human Life on Earth. Most of us have thought about how we would handle various types of scenarios that could signal the end of the world. There are plenty of movies on the subject, psychological papers, and even survivalists that are part of reality TV shows. Perhaps you have had dreams about being one of the few left and what you would do in order to survive.