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| De Carlo, M; Ardhuin, Fabrice; Le Pichon, A. |
| Between 0.1 and 0.5 Hz, infrasound signals recorded in the atmosphere are dominated by ocean-generated noise called microbaroms. Microbaroms propagate through the atmosphere over thousands of kilometers due to low absorption and efficient ducting between the ground and the stratopause. Different theoretical models have been developed to characterize the source of microbaroms, all based on the second-order non-linear interaction of ocean waves. While early theories considered an infinite ocean depth and a source radiation depending on the acoustic wave elevation angle, other works have approximated the radiation pattern as a monopole, and found a considerable effect of the water depth. This paper reviews these models and extends the previous theories to the... |
| Tipo: Text |
Palavras-chave: Interface waves; Wave propagation; Infrasound. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00602/71378/69827.pdf |
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