title: Outdoor measurements of spherical acoustic shock decay.
abstract: Prior anechoic measurements of a small acetylene-oxygen balloon explosion were used to study spherical weak-shock decay over short ranges [Muhlestein et al., J. Acoust. Soc. Am. 131, 2422-2430 (2012)]. Here, longer-range measurements conducted at the Bonneville Salt Flats with a larger balloon are described. Waveform and spectral characteristics and comparisons of the peak pressure decay with an analytical weak-shock model are presented. Weak shocks persist to at least 305 m, with an amplitude decay that is predicted reasonably well using the model. Deviations are discussed in the context of atmospheric effects and nonlinear ground reflections.
authors.affiliation: Department of Physics, Brigham Young University-Idaho, Rexburg, Idaho 83460, USA sarahmyoung24@gmail.com.
authors.forename: Sarah M
authors.initials: SM
authors.lastname: Young
authors.affiliation: Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602, USA kentgee@byu.edu, tbn@byu.edu, kevinmatthewleete@gmail.com.
authors.forename: Kent L
authors.initials: KL
authors.lastname: Gee
authors.affiliation: Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602, USA kentgee@byu.edu, tbn@byu.edu, kevinmatthewleete@gmail.com.
authors.forename: Tracianne B
authors.initials: TB
authors.lastname: Neilsen
authors.affiliation: Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602, USA kentgee@byu.edu, tbn@byu.edu, kevinmatthewleete@gmail.com.
authors.forename: Kevin M
authors.initials: KM
authors.lastname: Leete