EARTHSC 2GG3 Chapter Notes - Chapter 7: East African Rift, Andesite, Plate Tectonics
29 Dec 2019
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Sprayed seawater onto lava flow to stop it from filling an icelandic harbour. Water has high heat capacity so hope was to cool it enough that it would freeze and hold lava in place. The only limited example of humans influencing lava flow. Geothermal energy is used directly to heat sidewalks, buildings and electricity generation etc. in iceland. Eliminates the need to plough sidewalks and roads. Volcanoes produce excellent soils, good chemical composition and easily absorbed by plants. Village at the base of the active volcano where ash clean up is a part of life. Safety channels created to contain the threat of volcanic mudflows. People did not believe mt vesuvius would harm them. Pyroclastic flow - ash, magma, fire fragments. At the time was very unpredictable, eruptions were rare and very deadly. Subduction of explorer, juan de fuca and gorda plate causes melting below north. American plate western us and parts of canada impacted.
