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Science 28 February 1997:
Vol. 275. no. 5304, pp. 1290 - 1293
DOI: 10.1126/science.275.5304.1290
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Reports

Burst Conditions of Explosive Volcanic Eruptions Recorded on Microbarographs

Meghan M. Morrissey * and Bernard A. Chouet

Explosive volcanic eruptions generate pressure disturbances in the atmosphere that propagate away either as acoustic or as shock waves, depending on the explosivity of the eruption. Both types of waves are recorded on microbarographs as 1- to 0.1-hertz N-shaped signals followed by a longer period coda. These waveforms can be used to estimate burst pressures and gas concentrations in explosive volcanic eruptions and provide estimates of eruption magnitudes.

M. M. Morrissey, U.S. Geological Survey, Box B25046, Federal Center, MS-966, Denver, CO 80225, USA.
B. A. Chouet, U.S. Geological Survey, 345 Middlefield Road, MS-977, Menlo Park, CA 94025, USA.
*   To whom correspondence should be addressed.

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
From Strombolian explosions to fire fountains at Etna Volcano (Italy): what do we learn from acoustic measurements?.
S. Vergniolle and M. Ripepe (2008)
Geological Society, London, Special Publications 307, 103-124
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