EARTHSC 2GG3 Lecture 5: Tsunamis and Avalanches
11 Sep 2018
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Document Summary
38 mc qs and 4 sa worth 4 marks each. In thailand, elephants sensed the tsunami and aided in moving handlers and tourists to higher ground. Landslide-triggered tsunamis: submarine landslides cause water to become displaced in lakes or oceans, landslides can fall into the ocean from mountains, causing waves to form, ex. Lituya bay, alaska: bay water surged to a level 5. 25 m above normal, volcano flank collapse may also cause tsunami, lose energy over distance. Volcanic-triggered tsunamis: less common than earthquake-triggered, second most deadly tsunami triggered by krakatoa eruption (a steam explosion, between java and sumatra, eruptions on august 26 and 27, 1883, explosion heard 5000 km away. Links with other natural hazards: causes of tsunami, earthquakes, landslides, volcanic explosions, meteorites, caused by tsunami, coastline erosion and sediment deposition, subsidence of coastlines. Perception and personal adjustment to the tsunami hazard. If you feel an earthquake, leave the beach or low-lying area.
