ESCI 1012 Lecture Notes - Lecture 4: Natural Hazard, Isostasy, Mass Wasting
Document Summary
Many natural hazards occur as a result of motion along plate boundaries, but these hazards are not exclusive to plate boundaries. Volcanism also occurs at hot spots, rising plumes of hot mantle rock that are not restricted to plate boundaries. Earthquakes can occur along older faults that are no longer part of an active plate boundary. Overall, non-plate boundary phenomena are not as common as boundary phenomena. Vertical relief generated by plate tectonics or isostatic uplift can lead to landslide and mass wasting events. Not all natural hazards are directly tied to plate tectonics and isostasy. On human time frames, floods, hurricanes, tornadoes and wildfires are not directly affected. For high income countries, the most deaths are due to drought and heat. In developing countries, most die from earthquakes and tsunamis. The(cid:369) do(cid:290)"t ha(cid:362)e the (cid:325)esou(cid:325)ces to (cid:325)espo(cid:290)d to these disaste(cid:325)s. They are less understood by the public. The time frames make them easily overlooked.
