Utilization of seismic activity infrasound signals to estimate wind in the atmosphere

On 2nd November 2108, an earthquake, which has a measured of preliminary magnitude of 5.4 hits the Western part of Wakayama prefecture, Japan. With this scale, coherent low-frequency sound waves are sequential, with an azimuth depiction that predicts that the source of the earthquake originating about 100 km from the epicenter was detected by several sensors located in the eastern part of the island of Shikoku, Japan. Geometric analysis of sound waves with atmospheric background conditions from NRLMSIS-00 and MERA-2 shows that the wind structure in the atmosphere that emerged during an earthquake caused the propagation of low-frequency sound wave sources to be channeled in the upper troposphere. As a result, the above geometric analysis can provide an estimate of the wind speed in the atmosphere. Therefore, measurement of low-frequency sound waves as an alternative approach tool can provide expanded possibilities for monitoring wind structures in the atmosphere.