Week 3 Volcano Lecture
Week 3 Volcano Lecture GEOL 1005
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This 1 page Bundle was uploaded by Frances Cooke on Sunday November 15, 2015. The Bundle belongs to GEOL 1005 at George Washington University taught by Glenn Havelock in Fall 2015. Since its upload, it has received 32 views. For similar materials see Environmental Geology in Geology at George Washington University.
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Date Created: 11/15/15
0 Mount Pinatubo 1991 Phillippines O 0 Second largest eruption in 20th century 12 kquot3 material spread 0 Killer Volcano documentary 0 0 00000 00000000 USGS responsibility to protect people predict and forecast eruptions Theory volcano just letting off excess steam I Earthquakes caused by plate tectonics less damage or risk 400 earthquakes in two days Limited funds USGS can only visit a few sites a year Earthquakes 5mi below surface gt sign of volcano COSPEC measures 802 coming out of mountain Huge tremor gt level 2 alert and evacuation win 6mi I Increasing frequency and intensity Magma visible through cracks in surface Top blows pyroclastic flow changes course Domal structure gt very explosive Typhoon Ash cloud of large eruption creates on weather system gt lightning Raining pumice Changes global temps by 1 degree for over 5 yrs Lahar
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