EOSC 114 Lecture Notes - Stratovolcano, Tiltmeter, Subduction

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10 Apr 2013
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Explain how the impact of landslides depends on: It has the highest frequency of landslides because of its mountainous terrain, the fact that it has lots of rain and due to its complex geology such as unconsolidated glacial sediments. The return period of large landslides is 25-70 years; they are over 20 million m3 of material. Falls: occur on very steep slopes, usually rock. The material detaches because of weakness and it falls very fast due to gravity. Slides: can vary from slow to fast they are usually soil rock or debris. In slides the material moves as a coherent mass along a surface of failure which can be either curved or strait. Slides can also be translational if the surface is flat. Translational slides can vary from slow and fast and they are usually strong material moving on planes of weakness and is cohesive motion of material along a flat surface.

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