Anomalous infrasound generated by the Alaskan earthquake of 28 March 1964

The authors present and analyze data recorded at three microphone arrays (Boulder, Colorado; Boston, Massachusetts; and Washington, DC) associated with the Alaskan earthquake of 03 h 36 min 13 s UT, 28 March 1965 (61.05N, 147.50W). They show that the recordings from all three stations contain not only the epicentral and locally generated air waves reported by other authors, but also contain evidence of atmospheric radiation apparently generated from seismic surface waves along the Rocky Mountains. The latter became decoupled from the surface wave and traveled at about 314 m/s through the air to the arrays.