This article provides an application of the silt-suspension theory to a Bayesian-inference inversion for the geo-acoustic parameters in marine mud. The theory, with consequences that have been developed recently, postulates a suspension of water and clay mineral card-houses that supports moderately dilute concentrations of silt particles. The approach is an example of a physically based model inversion, in which parameters representing physical mud-layer properties are obtained by inversion and used to produce estimates of geoacoustic properties, including their frequency dependence. The acoustic data are from a combustive source signal propagated along a track, located over several meters of fine-grained mud in the New England Mud Patch, to a single hydrophone on a receiver array during the 2017 Seabed Characterization Experiment. Data extracted from a nearby piston core inform the physical modeling, with selections of inversion parameters guided by both sensitivity analyses and bounds from archival and core measurements. Results show the feasibility of this inversion approach. The estimates of mud density and sound speed are close to values obtained independently. The frequency dependence of attenuation is estimated over the full low-frequency source band and has an approximate power exponent of 1.72.

中文翻译：

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使用海泥悬浮理论对新英格兰泥块沉积物进行地声反演

本文提供了淤泥悬浮理论在海泥中地声参数的贝叶斯推理反演中的应用。该理论，以及最近发展起来的结果，假设水和粘土矿物卡片屋的悬浮液支持适度稀释的淤泥颗粒浓度。该方法是基于物理的模型反演的一个例子，其中表示物理泥层特性的参数通过反演获得，并用于产生地声特性的估计值，包括它们的频率依赖性。在 2017 年海底表征实验期间，声学数据来自沿轨道传播的燃烧源信号，位于新英格兰泥浆带中数米的细粒泥浆，到接收器阵列上的单个水听器。从附近的活塞核心提取的数据为物理建模提供信息，通过灵敏度分析以及档案和核心测量的界限指导反演参数的选择。结果显示了这种反演方法的可行性。泥浆密度和声速的估计值接近于独立获得的值。衰减的频率相关性是在整个低频源频带上估计的，其功率指数近似为 1.72。