Sound absorption in sea water: A third chemical relaxation

Sound absorption in sea water is dominated by chemical relaxations involving magnesium sulfate at higher frequencies (relaxation frequency fr∠100 kHz) and boric acid at lower frequencies (fr∠1 kHz). A third intermediate-frequency relaxation involving magnesium and carbonic acid has been found. Like...

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Veröffentlicht in:The Journal of the Acoustical Society of America 1979-04, Vol.65 (4), p.923-925
Hauptverfasser: Mellen, R. H., Simmons, V. P., Browning, D. G.
Format: Artikel
Sprache:eng
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Zusammenfassung:Sound absorption in sea water is dominated by chemical relaxations involving magnesium sulfate at higher frequencies (relaxation frequency fr∠100 kHz) and boric acid at lower frequencies (fr∠1 kHz). A third intermediate-frequency relaxation involving magnesium and carbonic acid has been found. Like the boric acid relaxation, the absorption increases exponentially with pH in the sea water range.
ISSN:0001-4966
1520-8524
DOI:10.1121/1.382595