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Volcanic explosion clouds: density, temperature, and particle content estimates from cloud motion.

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Volcanic explosion clouds: density, temperature, and particle content estimates from cloud motion. / Wilson, L.; Self, S.
In: Journal of Geophysical Research, Vol. 85, No. B5, 10.05.1980, p. 2567-2572.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Wilson, L & Self, S 1980, 'Volcanic explosion clouds: density, temperature, and particle content estimates from cloud motion.', Journal of Geophysical Research, vol. 85, no. B5, pp. 2567-2572. https://doi.org/10.1029/JB085iB05p02567

APA

Wilson, L., & Self, S. (1980). Volcanic explosion clouds: density, temperature, and particle content estimates from cloud motion. Journal of Geophysical Research, 85(B5), 2567-2572. https://doi.org/10.1029/JB085iB05p02567

Vancouver

Wilson L, Self S. Volcanic explosion clouds: density, temperature, and particle content estimates from cloud motion. Journal of Geophysical Research. 1980 May 10;85(B5):2567-2572. doi: 10.1029/JB085iB05p02567

Author

Wilson, L. ; Self, S. / Volcanic explosion clouds : density, temperature, and particle content estimates from cloud motion. In: Journal of Geophysical Research. 1980 ; Vol. 85, No. B5. pp. 2567-2572.

Bibtex

@article{529c353f6d0849bb9d3e9b7431c64231,
title = "Volcanic explosion clouds: density, temperature, and particle content estimates from cloud motion.",
abstract = "Photographic records of 10 vulcanian eruption clouds produced during the 1978 eruption of Fuego Volcano in Guatemala have been analyzed to determine cloud velocity and acceleration at successive stages of expansion. Cloud motion is controlled by air drag (dominant during early, high-speed motion) and buoyancy (dominant during late motion when the cloud is convecting slowly). Cloud densities in the range 0.6 to 1.2 times that of the surrounding atmosphere were obtained by fitting equations of motion for two common cloud shapes (spheres and vertical cylinders) to the observed motions. Analysis of the heat budget of a cloud permits an estimate of cloud temperature and particle weight fraction to be made from the density. Model results suggest that clouds generally reached temperatures within 10 K of that of the surrounding air within 10 seconds of formation and that dense particle weight fractions were less than 2% by this time. The maximum sizes of dense particles supported by motion in the convecting clouds range from 140 to 1700 micrometres.-Authors",
author = "L. Wilson and S. Self",
year = "1980",
month = may,
day = "10",
doi = "10.1029/JB085iB05p02567",
language = "English",
volume = "85",
pages = "2567--2572",
journal = "Journal of Geophysical Research",
issn = "0148-0227",
publisher = "American Geophysical Union",
number = "B5",

}

RIS

TY - JOUR

T1 - Volcanic explosion clouds

T2 - density, temperature, and particle content estimates from cloud motion.

AU - Wilson, L.

AU - Self, S.

PY - 1980/5/10

Y1 - 1980/5/10

N2 - Photographic records of 10 vulcanian eruption clouds produced during the 1978 eruption of Fuego Volcano in Guatemala have been analyzed to determine cloud velocity and acceleration at successive stages of expansion. Cloud motion is controlled by air drag (dominant during early, high-speed motion) and buoyancy (dominant during late motion when the cloud is convecting slowly). Cloud densities in the range 0.6 to 1.2 times that of the surrounding atmosphere were obtained by fitting equations of motion for two common cloud shapes (spheres and vertical cylinders) to the observed motions. Analysis of the heat budget of a cloud permits an estimate of cloud temperature and particle weight fraction to be made from the density. Model results suggest that clouds generally reached temperatures within 10 K of that of the surrounding air within 10 seconds of formation and that dense particle weight fractions were less than 2% by this time. The maximum sizes of dense particles supported by motion in the convecting clouds range from 140 to 1700 micrometres.-Authors

AB - Photographic records of 10 vulcanian eruption clouds produced during the 1978 eruption of Fuego Volcano in Guatemala have been analyzed to determine cloud velocity and acceleration at successive stages of expansion. Cloud motion is controlled by air drag (dominant during early, high-speed motion) and buoyancy (dominant during late motion when the cloud is convecting slowly). Cloud densities in the range 0.6 to 1.2 times that of the surrounding atmosphere were obtained by fitting equations of motion for two common cloud shapes (spheres and vertical cylinders) to the observed motions. Analysis of the heat budget of a cloud permits an estimate of cloud temperature and particle weight fraction to be made from the density. Model results suggest that clouds generally reached temperatures within 10 K of that of the surrounding air within 10 seconds of formation and that dense particle weight fractions were less than 2% by this time. The maximum sizes of dense particles supported by motion in the convecting clouds range from 140 to 1700 micrometres.-Authors

U2 - 10.1029/JB085iB05p02567

DO - 10.1029/JB085iB05p02567

M3 - Journal article

AN - SCOPUS:0018914585

VL - 85

SP - 2567

EP - 2572

JO - Journal of Geophysical Research

JF - Journal of Geophysical Research

SN - 0148-0227

IS - B5

ER -