Question

based on the past history of vesuvius, what volcanic hazards besides an

th 20 to 60 feet of until the 17001 pe of stratovare animals, and how n the 1st century EXERCISE 5.15 Stratovolcano Disaster Case Histories hundreds of mal shall, pyrocast make and wear to the next en te ample evide beyond its bc lopes of the miles from the vinly possible Name: Course: Section: Date: I. Vesuvius, Italy [VEI 5): Vesuvius erupted in 79 CE, burying an estimated 16,000 people beneath 20 to 60 feet of ash The towns of Pompeii and Herculaneum were wiped from the map, their locations lost to the world until the 1700s. The eruption was witnessed by the Roman admiral Pliny (who died on a ship in the harbor), and this type of stratovolcano eruption is named Plinian in his honor. The very fine-grained ash preserved the shapes of residents, animals, and house- hold objects so well that archeologists have been able to reconstruct minute details of Roman life in the 1st century C.E., such as the size and shape of loaves of bread (see Fig 5.13b). Vesuvius remains highly active today, having undergone 53"significant eruptions since 79 CE and hundreds of small ones. None were as explosive or damaging as the 79 c..event. Most involved lava with varying amounts of ash fall, pyroclastic flows, and lahars, and in 1944 lava flowed into the suburbs of the modern city of Naples. Increasing earthquake and stearn vent activity since 2012 suggest that magma is again rising toward the surface, and thus may be precursors to the next eruption Whether it will be as explosive as the 79 C.E. eruption or not, its effects on Naples could be severe. Despite ample evidence of the volcano's activity, the NASA image of Vesuvius on the next page shows that the city has expanded far beyond its boundar- ies in Roman days. Today, nearly 4 million people occupy a metropolitan area that is encroaching on the slopes of the volcano. (a) The lateral blast from the 1980 eruption of Mount St. Helens extended outward approximately 15 miles from the crater. Vesuvius and Mt. St. Helens have the same VEl rating, so a similar event at Vesuvius is certainly possible. Using the distance scale on the Naples image, outline a 15-mile blast radius aroundVesuvius. (b) Based on this blast radius, how much of the Naples metropolitan area do you think is endangered and should be evacuated? ould be the Good 20 develd YURU (©) Based on the past history of Vesuvius, what volcanic hazards besides an explosive blast would probably develop? (continued)

Answer 1

The history of Vesuvius suggests how affective this volcano was in the past and the amount of destruction that was done by this volcano in the history of the world that killed about 16,000 thousand people in the past by its vast volcanic hazardous materials that present inside this volcano. Some of the major volcanic hazards of this volcano are as follows:

• Presence of a vast amount of lava flow that affected the region.
• The ash and the dust release by this volcano is one of the major hazards.
• The pyroclastic flow makes the huge ocean of clouds that is the greater danger for the region and it affect the visibility of the region.
• Most importantly, the large number of rocks and muds that flowed in the plains affected the people and destroyed the region and many more.