Abstract
Measurements of excess attenuation from near-surface bubbles from the Shallow Water '06 experiment are reported. These are transmission measurements made over the frequency range 1-20 kHz, and they demonstrate a frequency, grazing angle, and wind speed dependence in attenuation. Data modeling points to bubble void fractions of order 10-6 in effect for wind speeds 10-13 ms. Simultaneous measures of wind speed made within 1.5 and 11 km of the open water experimental location differed by 2 ms in their respective 30 min average; this has cautionary implications for empirical models for bubble attenuation that are a strong function of wind speed.
| Original language | English (US) |
|---|---|
| Pages (from-to) | EL163-EL169 |
| Journal | Journal of the Acoustical Society of America |
| Volume | 124 |
| Issue number | 3 |
| DOIs | |
| State | Published - Sep 30 2008 |
ASJC Scopus subject areas
- Arts and Humanities (miscellaneous)
- Acoustics and Ultrasonics
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Dahl, P. H., Choi, J. W., Williams, N. J., & Graber, H. C. (2008). Field measurements and modeling of attenuation from near-surface bubbles for frequencies 1-20 kHz. Journal of the Acoustical Society of America, 124(3), EL163-EL169. https://doi.org/10.1121/1.2963096