Burst Conditions of Explosive Volcanic Eruptions Recorded on Microbarographs
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.
Morrissey
MM
M. M. Morrissey, U.S. Geological Survey, Box 25046, 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.
Chouet
BA