ANTH 1150 Study Guide - Final Guide: Climate Change, Cool Air, Chlorine

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Questions: give an example of a stratovolcano eruption. St. helen, with 120 years of dormancy there was a massive eruption because the frequency was low. Tectonic setting: subduction zone (juan de fuca plate is subducting the north american plate) Causes: subduction zone allowed magma to reach the surface, vent in the earth"s surface magma and gases build up and erupt. Aftereffect: ash fall, landslide, loss of human life, loss of infrastructure, fires, pyroclastic flow. E: rotational vs. translational vs. debris flow landslides. Fastest at top, slowest at bottom: longshore drift is managed through permanent (hard) or temporary (soft) solutions. Hard solutions: -seawall; wall structure built parallel to the beach meant to trap sediment and reflects waves and redirects energy to shoreline. Soft solution: beach nourishment sand added to replace the lost sand from the beach: y y" = a. Groins; wall structure built perpendicular to the beach meant to trap sediment moving across the shoreline: plates: 5.

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