Attenuation of Low-Frequency Sound in Freshwater

Attenuation of Low-Frequency Sound in Freshwater

Lake Superior was chosen as an experimental site to compare sound absorption of freshwater with the results of absorption measurements in seawater. The relaxation-like absorption at 1 kilohertz occurring in seawater is also present in freshwater. A relaxation related to the structural characteristic...

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Veröffentlicht in:Science (American Association for the Advancement of Science) 1968-12, Vol.162 (3858), p.1120-1121
Hauptverfasser: Browning, David G., Jones, Everett N., Mellen, Robert H., Thorp, William H.
Format: Artikel
Sprache:eng
Schlagworte:
Acoustic attenuation
Audio frequencies
Fresh water
Lakes
Liquids
Saltwater
Sea water
Transcriptional regulatory elements
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Beschreibung
Zusammenfassung:Lake Superior was chosen as an experimental site to compare sound absorption of freshwater with the results of absorption measurements in seawater. The relaxation-like absorption at 1 kilohertz occurring in seawater is also present in freshwater. A relaxation related to the structural characteristics rather than to the salt content of water may be responsible for the anomalous absorption.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.162.3858.1120