- published: 22 Apr 2011
- views: 316827
During a volcanic eruption, lava, tephra (ash, lapilli, volcanic bombs and blocks), and various gases are expelled from a volcanic vent or fissure. Several types of volcanic eruptions have been distinguished by volcanologists. These are often named after famous volcanoes where that type of behavior has been observed. Some volcanoes may exhibit only one characteristic type of eruption during a period of activity, while others may display an entire sequence of types all in one eruptive series.
There are three different metatypes of eruptions. The most well-observed are magmatic eruptions, which involve the decompression of gas within magma that propels it forward. Phreatomagmatic eruptions are another type of volcanic eruption, driven by the compression of gas within magma, the direct opposite of the process powering magmatic activity. The last eruptive metatype is the Phreatic eruption, which is driven by the superheating of steam via contact with magma; these eruptive types often exhibit no magmatic release, instead causing the granulation of existing rock.
Edward Lodewijk "Eddie" Van Halen (born January 26, 1955) is a Dutch-born American guitarist, keyboardist, songwriter and producer. He is best known as the lead guitarist and co-founder of the eponymous hard rock band Van Halen. Allmusic described him as "Second to only Jimi Hendrix... undoubtedly one of the most influential, original, and talented rock guitarists of the 20th century." He is ranked 8th in Rolling Stone's 2011 list of the Top 100 guitarists.
Born in Nijmegen, The Netherlands, Edward Lodewijk van Halen is a son of clarinetist, saxophonist and pianist father Jan van Halen and mother Eugenia. Eugenia van Halen was originally from Indonesia which was a former Dutch colony. Eugenia was half Dutch and half Indonesian. Edward's middle name "Lodewijk" was derived from composer Ludwig van Beethoven (Lodewijk is the Dutch version of Ludwig). Edward continued this naming tradition by naming his son Wolfgang Van Halen after composer Wolfgang Amadeus Mozart.. In February 1962, at the age of seven, Edward moved with his family to the United States, settling in Pasadena, California.[1]