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Acoustic Detection of Oceanic Double-Diffusive Convection: A Feasibility Study

机译:海洋双扩散对流的声波检测:可行性研究

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摘要

The feasibility of using high-frequency acoustic scattering techniques to map the extent and evolution of the diffusive regime of double-diffusive convection in the ocean is explored. A scattering model developed to describe acoustic scattering from double-diffusive interfaces in the laboratory, which accounted for much of the measured scattering in the frequency range from 200 to 600 kHz, is used in conjunction with published in situ observations of diffusive-convection interfaces to make predictions of acoustic scattering from oceanic double-diffusive interfaces. Detectable levels of acoustic scattering are predicted for a range of different locations in the world's oceans. To corroborate these results, thin acoustic layers detected near the western Antarctic Peninsula using a multifrequency acoustic backscattering system are shown to be consistent with scattering from diffusive-convection interfaces.
机译:探索了使用高频声散射技术绘制海洋双扩散对流扩散方式的程度和演变的可行性。为描述实验室中双扩散界面的声散射而开发的散射模型(占200至600 kHz频率范围内测得的大部分散射)与已发布的扩散对流界面的原位观测结果结合使用。对海洋双扩散界面的声散射进行预测。预测了世界海洋中不同位置范围内可检测到的声散射水平。为了证实这些结果,使用多频声反向散射系统在南极半岛西部附近检测到的薄声层显示与扩散对流界面的散射一致。

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