@article{ref1,
title="Modeling the generation of infrasound from earthquakes",
journal="Journal of the Acoustical Society of America",
year="2012",
author="Arrowsmith, Stephen J. and Burlacu, Relu and Pankow, Kristine and Stump, Brian and Stead, Richard and Whitaker, Rod and Hayward, Chris",
volume="132",
number="3",
pages="2047-2047",
abstract="Earthquakes can generate complex seismo-acoustic wavefields, consisting of seismic waves, epicenter-coupled infrasound, and secondary infrasound. We report on the development of a numerical seismo-acoustic model for the generation of infrasound from earthquakes. We model the generation of seismic waves using a 3D finite difference algorithm that accounts for the earthquake moment tensor, source time function, depth, and local geology. The resultant acceleration-time histories (on a 2D grid at the surface) provide the initial conditions for modeling the near-field infrasonic pressure wave using the Rayleigh integral. Finally, we propagate the near-field source pressure through the Ground-to-Space atmospheric model using a time-domain parabolic equation technique. The modeling is applied to an earthquake of MW 4.6, that occurred on January 3, 2011 in Circleville, Utah; the ensuing predictions are in good agreement with observations made at the Utah network of infrasonic arrays, which are unique and indicate that the signals recorded at 6 arrays are from the epicentral region. These results suggest that measured infrasound from the Circleville earthquake is consistent with the generation of infrasound from body waves in the epicentral region.<p /> <p>Language: en</p>",
language="en",
issn="0001-4966",
doi="10.1121/1.4755526",
url="http://dx.doi.org/10.1121/1.4755526"
}