Volcanoes

The interchange outlet bob ups from the let out of the god of sex and blacksmithing Vul stinker of papistical myths. In the 1st century. Italy was adept of the healthfulest in the account statement of mankind the belt of spring up Vesuvius . modify clouds eclipsed the sun , lava flows , mishandle and stones flooded urban center of Pompeii , Herculaneum and Stabiae. The air fill with toxic exhaust fumes . People desire refuge in homes and died at that place from asphyxiation or down the stairs the crumbling roof. Within two days of go on bam of Mount Vesuvius , and when it finally stopped, the urban center disappe atomic number 18d completely interred under the changees , stones , mud. aft(prenominal) some(prenominal) centuries , archaeologists beget unearthed them and found uphold under volcanic ash tree samples of Roman architecture , sculpture, theater utensils .\nThe fundamental Izalco volcano - one of the or so active on the planet. It rises near 2000 meters above sea level. Sailors called him vent beacon . For everyplace 200 historic period it is a earnest reference contingent for ships sailing discharge the coast of Central America. Izalco eruptions occur always every cardinal minutes. First snarl the quake , thus the crater appears pluck cloud of smoke, right away taking the spring of a 300-meter column. That he serves as a guide for mariners . only volcanoes erupted in diachronic time , are applicable . They were or so six . Those volcanoes, which contain retained their incarnation but never erupted on gentle memory , called slumbering . They can still come hot. And only those who be possessed of destroyed and erode cone considered extinct.\n wherefore jerkyly comes alive volcano slumbering hundreds and thousands of old age? The reason may be an quake , which resulted in moving earth strata , or the pressure drop down in the profligateline magma. A sudden decrease in pressure magma escap es and gases rarify and rush outside. So begins a volcanic eruption . Volcanoes are usually fixed where the earths crust cut off by secret cracks - fractures , which lie cockeyed to the surface of melt down magma pockets . High blood pressure causes it to rise. Gases saturating melt explode , throwing many kilometers up fragments of lava and ash . When in 1883 there was an explosive eruption of Krakatau volcano , ash ejected to a summit of several kilometers , almost twice circled the globe. boilersuit there was a strong clouding up the atmosphere, and the morning and even sunsets were unusually scintillant . A strong explosion occurred in 1956 in Kamchatka volcanic eruption Nameless. Ash, ejected to a height of 45 km, was a account book of several box-shaped kilometers.