Airy Phase 1
Airy Phase 1 : Natural Disaster. Portions of dispersed wave trains associated with the maxima or minima of the group velocity as a function of frequency. The Airy function can be used for an approximate calculation of the waveform. Examples are continental Rayleigh waves at periods around 15 seconds, mantle Rayleigh waves at periods of 200 to 250 seconds, and surface waves of periods between some 6 and 10 seconds which travel across an ocean at a velocity near 1 km/sec. (See Fig. 2.9 ??? of Chapter 2 in this Manual). See also: Kulhanek (2002, p. 345), and Aki and Richards (1980, p. 256)
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