The Centre for Maritime Research and Experimentation conducted a geoacoustic inverse experiment in the Mediterranean Sea in the summer of 2012. Among the objectives was to employ an autonomous underwater vehicle to collect acoustic data to invert for properties of the seafloor. Inversion results for the compression wave speed in the bottom and the source spectrum of the R/V Alliance during a close approach to the bottom moored vehicle are presented. The estimated wave speed was 1529 m/s ( σ=10 ). The source spectrum of the Alliance was estimated across more than six octaves of frequency.
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机译：海事研究与实验中心于2012年夏季在地中海进行了地声逆向实验。目标之一是使用自动水下航行器收集声学数据，以对海底特性进行反演。给出了在靠近底部停泊的车辆时底部的压缩波速度和R / V Alliance的源谱的反演结果。估计的波速为1529 m / s（σ= 10）。估计联盟的源频谱跨越六个八度以上的频率。
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