Title :
High-speed bubble sizing using the double frequency technique for oceanographic applications
Author :
Koller, D. ; Li, Y. ; Shankar, P.M. ; Newhouse, V.L.
Author_Institution :
Drexel Univ., Philadelphia, PA, USA
fDate :
7/1/1992 12:00:00 AM
Abstract :
A high-speed bubble sizing technique that should have the capability of accurately determining bubble populations in breaking waves has been developed. The system was able to acquire an average bubble spectrum from 2.5 to 6 kHz in 0.1 s. Through the use of a double frequency technique, there would be very little or no contribution from nonresonant bubbles at each frequency of interest. The results of the system were compared to the data obtained by listening to ambient bubble noise with a transducer and from photographic population counts
Keywords :
bubbles; computerised instrumentation; oceanographic techniques; oceanography; seawater; spatial variables measurement; 0.1 s; 2.5 to 6 kHz; breaking waves; bubble populations; bubble sizing; double frequency; oceanographic applications; Acoustic noise; Biomedical engineering; Biomedical measurements; Clouds; Damping; Oceans; Resonance; Resonant frequency; Sea measurements; Signal analysis;
Journal_Title :
Oceanic Engineering, IEEE Journal of
