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INFRASONIC OBSERVATION OF A SEVERE WEATHER SYSTEM

V. H. GOERKEInstitute for Telecommunication Sciences and Aeronomy *, Environmental Science Services Administration, Boulder, Colo.

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M. W. WOODWARDInstitute for Telecommunication Sciences and Aeronomy *, Environmental Science Services Administration, Boulder, Colo.

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Abstract

The coherent atmospheric pressure waves traveling at sonic velocities from a squall line storm 20–75 km. distant, were observed in detail for a period of 100 min. The measurements indicate that the infrasonic wave was generated in or near the leading edge of the storm. Infrasonic waves were not observed from funnel clouds or from the heavy rain clouds accompanying the storm front.

Abstract

The coherent atmospheric pressure waves traveling at sonic velocities from a squall line storm 20–75 km. distant, were observed in detail for a period of 100 min. The measurements indicate that the infrasonic wave was generated in or near the leading edge of the storm. Infrasonic waves were not observed from funnel clouds or from the heavy rain clouds accompanying the storm front.

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