NUWC Shallow Water Curtain Effect with Biot Bottom Loss: System Impact

NUWC Shallow Water Curtain Effect with Biot Bottom Loss: System Impact

The Curtain Effect was originally conceived to compare the relative rates of loss of spreading and attenuation in deep water in order to estimate possible attainable acoustic detection ranges. It was later modified to compare spreading, attenuation, and bottom loss in shallow water for the same purp...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Browning, David G, Christian, Raymond J, Herstein, Peter D, Monti, Joseph M
Format: Report
Sprache:eng
Schlagworte:
ACOUSTIC DETECTION
Acoustics
ATTENUATION
BOTTOM LOSS
CURTAIN EFFECT
DEEP WATER
DEPTH
GRAZING
GRAZING ANGLE
OCEAN BOTTOM
RANGE(DISTANCE)
UNDERWATER ACOUSTICS
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Beschreibung
Zusammenfassung:The Curtain Effect was originally conceived to compare the relative rates of loss of spreading and attenuation in deep water in order to estimate possible attainable acoustic detection ranges. It was later modified to compare spreading, attenuation, and bottom loss in shallow water for the same purpose (NUWC-NL Technical Document 4009, 2 March 1992). We now compare the Shallow Water Curtain under strongly downward refracting conditions for various source/ receiver depths assuming an angular dependent Biot bottom loss. The result is a diagram which allows the visualization of the relative trade-off between source depth and frequency under these conditions.