Search results
Results From The WOW.Com Content Network
Plinian eruptions or Vesuvian eruptions are volcanic eruptions marked by their similarity to the eruption of Mount Vesuvius in 79 AD, which destroyed the ancient Roman cities of Herculaneum and Pompeii. The eruption was described in a letter [1] written by Pliny the Younger, after the death of his uncle Pliny the Elder.
On 13 December 1921, Cordón Caulle began a sub-plinian eruption, with a 6.2 km (4 mi) high plume, periodic explosions and seismicity. The eruption had a Volcanic Explosivity Index of 3 and ended in February 1922. In 1929 and 1934 the Cordón Caulle had fissure eruptions, both with an estimated Volcanic Explosivity Index of 2.
The 1980 eruption of Mount St. Helens in Washington, which ripped apart the volcano's summit, was a Plinian eruption of Volcanic Explosivity Index (VEI) 5. [3] The strongest types of eruptions, with a VEI of 8, are so-called "Ultra-Plinian" eruptions, such as the one at Lake Toba 74 thousand years ago, which put out 2800 times the material ...
A.D. 79: Mount Vesuvius, Italy. Mount Vesuvius has erupted eight times in the last 17,000 years, most recently in 1944, but the big one was in A.D. 17. One of the most violent eruptions in history ...
The 1912 eruption was the largest eruption by volume in the 20th century, erupting a magma volume of about 13 cubic kilometers (3.1 cu mi). As many as 14 major earthquakes between M s {\displaystyle M_{\text{s}}} 6 to 7 , and over 100 earthquakes greater than M s {\displaystyle M_{\text{s}}} 5, resulted from the collapse of the caldera at Mount ...
A value of 0 is given for non-explosive eruptions, defined as less than 10,000 m 3 (350,000 cu ft) of tephra ejected; and 8 representing a supervolcanic eruption that can eject 1.0 × 10 12 m 3 (240 cubic miles) of tephra and have a cloud column height of over 20 km (66,000 ft). The scale is logarithmic, with each interval on the scale ...
The hottest temperature ever officially recorded on Earth was 134 F (56.67 C) in July 1913 in Death Valley, though some experts dispute that measurement and say the real record was 130 F (54.4 C ...
Emergency responders treating people for burns caused by sidewalks which have surpassed 160 degrees Fahrenheit (71C) in Arizona