The bottom parameters of the deep ocean are difficult to obtain through in situ measurement. These parameters demonstrate a significant physical meaning for predicting sound field accurately. Thus, geoacoustic inversion is required. An acoustic experiment was performed on a reliable acoustic path (RAP) in the Philippine Sea in 2013. A single bottom-moored hydrophone was deployed as the receiver, and the explosive charges were chosen as the sources. The experimental bottom loss (BL) versus angle was obtained with the water depth above 5000[Formula: see text]m for bottom parameter inversion. The inversion sediment parameters show a clay-silt feature. The marginal probability distributions (MPDs) represent that the inversion results have a high credibility. This method provides a feasible solution for the inversion of the bottom parameters in the deep ocean.

中文翻译：

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菲律宾海可靠声程地声反演实验研究

深海海底参数很难通过原位测量获得。这些参数对准确预测声场具有重要的物理意义。因此，需要地声反演。2013 年在菲律宾海的可靠声学路径 (RAP) 上进行了声学实验。部署了单个底部系泊水听器作为接收器，并选择炸药作为源。在水深5000以上[公式：见正文]m进行底部参数反演得到实验底部损失（BL）与角度的关系。反演沉积物参数显示粘土-粉砂特征。边际概率分布（MPD）表示反演结果具有较高的可信度。