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GEOPHYSICAL RESEARCH LETTERS,
VOL. 31,
L14604,
doi:10.1029/2004GL020020,
2004
Volcanic eruptions observed with infrasound
Jeffrey B. Johnson
Climate Change Research Center, University of New Hampshire, Durham, New Hampshire, USA
Richard C. Aster
Department of Earth and Environmental Science, New Mexico Institute of Mining and Technology, Socorro, New Mexico, USA
Philip R. Kyle
Department of Earth and Environmental Science, New Mexico Institute of Mining and Technology, Socorro, New Mexico, USA
Abstract
Infrasonic airwaves produced by active volcanoes provide valuable insight into the eruption dynamics. Because the infrasonic
pressure field may be directly associated with the flux rate of gas released at a volcanic vent, infrasound also enhances
the efficacy of volcanic hazard monitoring and continuous studies of conduit processes. Here we present new results from Erebus,
Fuego, and Villarrica volcanoes highlighting uses of infrasound for constraining quantitative eruption parameters, such as
eruption duration, source mechanism, and explosive gas flux.
Received 17
March
2004;
accepted 22
June
2004;
published 21
July
2004.
Index Terms: 0394 Atmospheric Composition and Structure: Instruments and techniques; 8414 Volcanology: Eruption mechanisms; 8419 Volcanology: Eruption monitoring (7280); 8494 Volcanology: Instruments and techniques.
Read Full Article (file size: 203619 bytes) Cited by
Citation: Johnson, J. B., R. C. Aster, and P. R. Kyle
(2004),
Volcanic eruptions observed with infrasound,
Geophys. Res. Lett.,
31,
L14604,
doi:10.1029/2004GL020020.
Copyright 2004 by the American Geophysical Union.
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