METEOROLOGICAL CONDITIONS AFFECTING ARCTIC SOUND PROPAGATION

A description of the effects of vertical temperature distribution and wind on the propagation of sound in the lowest layers of the Arctic atmosphere. Variations in temperature profiles are examined seasonally, daily, and diurnally under various wind conditions, and the behavior of the wind within th...

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Bibliographic Details
Main Authors: Batten,E. S., Schutz,C.
Other Authors: RAND CORP SANTA MONICA CALIF
Format: Text
Language:English
Published: 1968
Subjects:
Meteorology
Acoustics
(*METEOROLOGICAL PHENOMENA
*ARCTIC REGIONS)
(*SOUND TRANSMISSION
ATMOSPHERES)
WIND
ATMOSPHERIC TEMPERATURE
DETECTION
VELOCITY
DISTRIBUTION
AUDITORY PERCEPTION
FRICTION
TWILIGHT
THERMAL STABILITY
PERIODIC VARIATIONS
STATISTICAL ANALYSIS
DIURNAL VARIATIONS
POLAR REGIONS
LAYERS(ATMOSPHERE)
SUMMER
WINTER
Arctic
Arctic Sound
polar night
Online Access:http://www.dtic.mil/docs/citations/AD0679545
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0679545
Description
Summary:A description of the effects of vertical temperature distribution and wind on the propagation of sound in the lowest layers of the Arctic atmosphere. Variations in temperature profiles are examined seasonally, daily, and diurnally under various wind conditions, and the behavior of the wind within the friction layer of the atmosphere is explored. The theory of the Ekman spiral is used to compute the theoretical distribution of wind speed and sound speed as a function of azimuth for three characteristic temperature profiles as a function of azimuth. Considering temperature alone, the calculations show that supernormal audibility will probably be common during the polar night and perhaps during the summer twilight. (Author)

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