Statistical aspects of acoustic returns from a wind-driven water surface covered with organic films
The statistical properties of ultrasonic (10 MHz) signals scattered at a wind-driven water surface covered with different petroleum derivative films of well-defined and oceanographically relevant elastic surface properties were examined under laboratory and open-sea conditions. Evolution of the shap...
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| Format: | Article |
| Language: | English |
| Published: |
Institute of Fundamental Technological Research Polish Academy of Sciences
2014-01-01
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| Series: | Archives of Acoustics |
| Online Access: | https://acoustics.ippt.pan.pl/index.php/aa/article/view/1018 |
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| Summary: | The statistical properties of ultrasonic (10 MHz) signals scattered at a wind-driven water surface covered with different petroleum derivative films of well-defined and oceanographically relevant elastic surface properties were examined under laboratory and open-sea conditions. Evolution of the shape, skewness and kurtosis parameters of the signal distribution as a function of wind speed reflects a principal role played by the film elasticity. The elastic properties of composite sea surfaces likely to be present in nature and consisting of oil spills filled with a surface active material, floating solid particles, bubbles or drops of a third fluid with their important implications in remote sensing techniques are also discussed. A two-spatial scale irregularities distribution of the sea surface (capillary ripples present on tilted faces of long gravity waves) expresses itself in the corresponding signatures of at-sea experiment data. |
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| ISSN: | 0137-5075 2300-262X |