Assessment of yield equivalents from seismo-acoustic records under various atmospheric conditions

A combined analysis of seismic and acoustic signal observations for tracking explosive sources generated by the bombardment and shelling during the Russia-Ukraine conflict is presented. Events reported in the bulletins provided by IDC/CTBTO are used to identifying and associating detections of stations of the Central east European Infrsound Network (CEEIN). Seismo-acoustic signature (signal shape and amplitude, frequency content), as well as the propagation path of infrasonic signals, were analysed. As direction and speed of stratospheric winds are subject to change with time, selected events were analysed regarding their yield equivalents under various atmospheric conditions. By using infraGA 2D ray tracer through NRL-G2S atmospheric model, stratospheric and thermosphere infrasonic phases were identified and the energy release, which is described by the equivalent of TNT yield, is estimated by the empirical scaling of Los Alamos National Laboratory, published by Whitaker et al. (2003).