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Italy’s Mt. Vesuvius
Transcript of Italy’s Mt. Vesuvius
1. Plinian Eruption. 79 AD Eruption. This includes extremely large eruptions creating large explosive clouds in large vertical columns. This happens very quickly and can create pyroclastic flows and lahars
2. Sub plinian Eruption. 1631 eruption. Smaller than plinian eruptions but still creating pyroclastic flows and large ash plumes.
3. Strombolian Eruptions. 1631 - 1944. This creates tephra flows locally around the mountain and large lava flows.
4. Hawaiian style Eruptions. 1631 - 1944. Mostly lava flows in the crater and it is normally just a flow of lava. Geologic hazard is a natural geologic event that can endanger human lives and threaten human property. Earthquakes, geomagnetic storms, landslides, sinkholes, tsunamis, and volcanoes are all types of geologic hazards.
Italy’s Mt. Vesuvius is currently quiet, with only minor seismic (earthquake) activity and outgassing from fumaroles in its summit crater, but more violent activity could resume in the future.
Fumarole: A vent that emits hot gases, usually associated with past or current magmatic activity below. Lava flows can cause significant damage to infrastructure, and are a more significant hazard today than in the past because of encroaching development on the sides of Somma-Vesuvius. They are rarely a threat to human life due to their slow speed. Lava flows are common at Vesuvius during strombolian- and vulcanian-type eruptions.
79 AD: Most Famous and Destructive Eruption
203 AD: Violent Eruption
472 and 512 AD: Large Eruptions that "Covered Europe with Lots of Ash”
Small Eruptions in 685, 787, 968
1037 and 1139: Strong and Explosive Eruptions
1631: Most Destructive Since 512, had Earthquakes Several Months Before
1794, 1822, 1834, and 1850: Major eruptions
1929: Major Lava Flow
March 1944: Most Recent Eruption Today's population around
Mt. Vesuvius is about 3 million Dacite Trachyte Latite