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Lamb's dust-veil index

Lamb's dust-veil index An index of the amount of finely divided material suspended in the atmosphere after great volcanic eruptions, and of the duration of an effective veil intercepting the Sun's radiation. It can be calculated from estimates of the amount of solid matter thrown up, from the reduction of intensity of the solar beam, or from the reduction of temperatures prevailing at the surface of the Earth. The latitude of the volcano also affects the index values, because the maximum extent of the veil over the Earth varies, being greatest after eruptions in low latitudes. (The great eruption of Krakatoa in Indonesia in 1883, which ejected about 17 km3 of particulate matter into the atmosphere, where it remained for three years, gave an index value of 1000.) The index was devised by Professor H. Lamb.

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"Lamb's dust-veil index." A Dictionary of Ecology. . Encyclopedia.com. 17 Aug. 2017 <http://www.encyclopedia.com>.

"Lamb's dust-veil index." A Dictionary of Ecology. . Encyclopedia.com. (August 17, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/lambs-dust-veil-index-0

"Lamb's dust-veil index." A Dictionary of Ecology. . Retrieved August 17, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/lambs-dust-veil-index-0

Lamb's dust-veil index

Lamb's dust-veil index Index, devised by H. H. Lamb, of the amount of finely divided material suspended in the atmosphere after great volcanic eruptions, and of the duration of an effective veil intercepting the Sun's radiation. It can be calculated from estimates of the amount of solid matter thrown up, or from the reduction of intensity of the solar beam, or from the reduction of temperatures prevailing at the surface of the Earth. The latitude of the volcano affects the index value also, because the maximum extent of the veil over the Earth varies, being greatest after eruptions in low latitudes. (The great eruption of Krakatoa in Indonesia in 1883, which ejected about 17 km3 of particulate matter into the atmosphere, where it remained for three years, gave an index value of 1000.)

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"Lamb's dust-veil index." A Dictionary of Earth Sciences. . Encyclopedia.com. 17 Aug. 2017 <http://www.encyclopedia.com>.

"Lamb's dust-veil index." A Dictionary of Earth Sciences. . Encyclopedia.com. (August 17, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/lambs-dust-veil-index

"Lamb's dust-veil index." A Dictionary of Earth Sciences. . Retrieved August 17, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/lambs-dust-veil-index