disasters10.28notes

disasters10.28notes - 1 9.2: Ch. 9 Volcano Case Histories:...

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1 9.2: Ch. 9 – Volcano Case Histories: Killer Events Date:_________ Historic Volcanic Eruptions (continued): ♦♦ Tambora, 1815, VEI=7: the most violent and explosive stratovolcano eruption of the last 200 years and perhaps the most deadly ! On 10 April, a Plinian eruption tossed out nearly 3 mi 3 of pumice. Five days later, an even more powerful Plinian eruption blasted up to 27 miles high for 3 hours. This eruption eroded and widened the vent of the volcano, such that the eruption column stopped, but the magma poured out of the caldera in overwhelming pyroclastic flows (12 mi 3 ). Tambora killed at least 10,000 people directly by the eruption, but was responsible for over 100,000 deaths worldwide due to the pyroclastic fallot devastating crops , leading to famine and disease . Tambora affected global climate. Here in the U.S., 1816 is known as the “ year without a summer! . ♦♦ Krakatau, 1883, VEI=6: Vulcanian eruptions began on 26 August, with one large blast sending one of the volcanic cones into the sea, setting off a tsunami . Early the next morning saw more huge eruptions and more volcanic collapses that set off more giant tsunami . At 10 AM on 27 August, a Plinian eruption was accompanied by a stupendous blast that was heard thousands of miles away. The final blast sent huge tsunami
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disasters10.28notes - 1 9.2: Ch. 9 Volcano Case Histories:...

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