title: A theoretical relation between the celerity and trace velocity of infrasonic phases.
abstract: This paper presents a relationship between the celerity and trace velocity of infrasound signals propagating in a stratified, windy atmosphere. Despite their importance, known celerity values have only been determined empirically. An infrasonic phase (I-phase) diagram is developed which is useful in identifying different I-phases. Such an I-phase diagram allows for the prediction of the range of values of the celerity and trace velocity for each I-phase. The phase diagram can easily be extended to underwater acoustic and acoustic-gravity waves. An I-phase diagram is compared with data obtained from a ground-truth event where qualitative agreement is obtained.
authors.affiliation: National Center for Physical Acoustics, University of Mississippi, 145 Hill Drive, University, Mississippi 38677, USA jblonzag@olemiss.edu.
authors.forename: Joel B
authors.initials: JB
authors.lastname: Lonzaga