Acoustic Doppler evidence for a near‐surface bubble layer

1990 ◽  
Vol 88 (S1) ◽  
pp. S85-S85
Author(s):  
D. Alexandrou
Keyword(s):  
Near Surface ◽  
Bubble Layer ◽  
Surface Bubble

Temporal coherence of acoustic signals propagating through the near surface bubble layer

2002 ◽  
Vol 112 (5) ◽  
pp. 2424-2424
Author(s):  
R. Lee Culver ◽  
David Bradley ◽  
Jon Reeves
Keyword(s):  
Acoustic Signals ◽  
Temporal Coherence ◽  
Near Surface ◽  
Bubble Layer ◽  
Surface Bubble

Distribution of zooplankton inferred from hydroacoustic backscatter data in coastal waters off Ningaloo Reef, Western Australia

2002 ◽  
Vol 53 (6) ◽  
pp. 1005 ◽  
Author(s):  
Steven G. Wilson ◽  
Timothy Pauly ◽  
Mark G. Meekan
Keyword(s):  
Western Australia ◽  
Coastal Waters ◽  
Near Surface ◽  
Rhincodon Typus ◽  
Ningaloo Reef ◽  
The North ◽  
Whale Sharks ◽  
Bubble Layer ◽  
Surface Bubble

Hydroacoustic surveys were used to examine zooplankton distributions in coastal waters off Ningaloo Reef, Western Australia. Surveys were timed to coincide with the seasonal aggregation of whale sharks, Rhincodon typus, and other large zooplanktivores in these waters. The surveys examined scattering features of lagoon/shelf fronts, a series of cross-shelf transects and waters surrounding whale sharks swimming at the surface. These suggested that lagoon waters flow intrusively into shelf waters at reef passages in a layered exchange. Cross-shelf transects identified three vertical scattering layers: a surface bubble layer; a near-surface minimum layer; and a bottom maximum layer. Regions of intense mixing of lagoon and shelf waters were detected seaward and to the north of reef passages. Integrated acoustic mean volume backscatter of the bottom maximum layer increased with depth and distance offshore. Large subsurface aggregations of unidentified fauna were detected beneath whale sharks in the same area that manta rays and surface schools of euphausiids were also observed.

FDTD modeling of low‐frequency sea surface reverberation in the presence of a near‐surface bubble layer

2000 ◽  
Vol 107 (5) ◽  
pp. 2922-2922
Author(s):  
Richard S. Keiffer ◽  
Robert A. Zingarelli ◽  
Jorge C. Novarini
Keyword(s):  
Low Frequency ◽  
Sea Surface ◽  
Near Surface ◽  
Bubble Layer ◽  
Surface Bubble

Effects of Wind-Induced Near-Surface Bubble Plumes on the Performance of Underwater Wireless Acoustic Sensor Networks

2016 ◽  
Vol 16 (11) ◽  
pp. 4092-4099 ◽  
Author(s):  
Amit Kumar Mandal ◽  
Sudip Misra ◽  
Tamoghna Ojha ◽  
Mihir Kumar Dash ◽  
Mohammad S. Obaidat
Keyword(s):  
Sensor Networks ◽  
Acoustic Sensor ◽  
Near Surface ◽  
Bubble Plumes ◽  
Acoustic Sensor Networks ◽  
Surface Bubble

Effects of the sub‐surface bubble layer on sound propagation

1982 ◽  
Vol 72 (2) ◽  
pp. 510-514 ◽  
Author(s):  
Jorge C. Novarini ◽  
Daniel R. Bruno
Keyword(s):  
Sound Propagation ◽  
Bubble Layer ◽  
Surface Bubble
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