Hawaiian Volcano Hazards Exercise You are a Hawaii Volcano Observatory (HVO) sci
ID: 291419 • Letter: H
Question
Hawaiian Volcano Hazards Exercise You are a Hawaii Volcano Observatory (HVO) scientist in charge of assessing the natural hazards associa Kilauea's activity- especially the dangers to people and property in the region. There rel are three parts to this exercise: Background, the HVO Kilauea hazard assessment, and writing a short news ease. There are 3 topographic maps and 1 geologic map to use to assess the natural hazards associated with learn more about maps. In part based on Brian Scheidt, Mineral Area College, Kim West, University of Saskotchewan, Lyn Gualtieri, Seattle University activity including the dangers to people and properties in the region. Part of the object of this exercise is to Background View the eruption movie: https://www.youtube.com/watch?v-GTMg01IAkFo What type of material is being erupted? (pyroclastic eruption or lava flow and its type). . Does this material have a high or low viscosity? . If you were walking across the surface of the lava flow after it cooled, what type of lava would you be walking on: a) Aa b) Pahoehoe c) Ash fall d) Volcanic bombs In general, what is the general chemical composition of this material (mafic, felsic, or...).? What is the name of the resulting rock? Based on the previous questions, and what you know about Hawaiian volcanoes, what type of volcano are we look- ing at? What are the main gases emitted from a volcano? . What are some potential hazards to someone living and crops being grown in the vicinity of this eruption? Considen the questions aboveExplanation / Answer
1) Tholeiite (type of basaltic lava) is being erupted from the Kilauea volcano as it doesn't contains any fragments and gases from a volcanic eruption to make it pyroclastic.
2) The viscosity of the erupted material is comparatively low as it doesn't contains any fragments.
3) Kilauea's dominant form of eruption is effusive, where magma flows create ropey lava known in Hawaii as pahoehoe lava.
4) General composition of pahoehoe is mafic in nature as it has low silica content of the order 46-52%.
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