Antarctic Atmospheric Infrasound.

In order to monitor atmospheric infrasonic waves in the passband from 0.1 to 0.01 Hz a digital infrasonic detection system was installed in Antarctica on the Ross Ice shelf near McMurdo Station on McMurdo Sound. An array of seven infrasonic microphones subtending an area of about 35 sg km was operat...

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Bibliographic Details
Main Authors: Wilson,Charles R, McKibben,Bruce N
Other Authors: ALASKA UNIV FAIRBANKS GEOPHYSICAL INST
Format: Text
Language:English
Published: 1986
Subjects:
Meteorology
*INFRASONIC RADIATION
DIGITAL SYSTEMS
METEORS
DETECTORS
REAL TIME
MOTION
WAVE PROPAGATION
SIGNALS
AURORAE
ONLINE SYSTEMS
SUPERSONIC CHARACTERISTICS
TROPOSPHERE
MICROPHONES
ANALOG SIGNALS
TRAVELING WAVES
VOLCANOES
OBSERVATORIES
ELECTROJETS
WUAFOSR2309A1
PE61102F
Antarctic
McMurdo Sound
McMurdo Station
Ross Ice Shelf
Windless Bight
Antarc*
Antarctica
antartic*
aurora australis
Ice Shelf
Online Access:http://www.dtic.mil/docs/citations/ADA176804
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA176804
Description
Summary:In order to monitor atmospheric infrasonic waves in the passband from 0.1 to 0.01 Hz a digital infrasonic detection system was installed in Antarctica on the Ross Ice shelf near McMurdo Station on McMurdo Sound. An array of seven infrasonic microphones subtending an area of about 35 sg km was operated in Windless Bight. The analog microphone data was telemetered to McMurdo station where the infrasonic date were digitized and subjected to on-line real-time analysis to detect traveling infrasonic waves with periods from 10 to 100 seconds. During the period of operation of the Antartic infrasonic observatory, hundreds of infrasonic signals were detected in association with many natural sources such as the aurora australis, marine storm sea-air interactions, volcanic eruptions, mountain generated lee-wave effects, large meteors and auroral electrojet supersonic motions.

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