Major advancements in surface wave testing over the past 2 decades have led researchers to revisit and re-analyze archived seismic records, particularly those involving measurements on the Moon. The goal of such recent efforts with lunar seismic measurements has been to gain further insights into lunar geology. We examined the active seismic data from the Apollo 16 mission for their surface wave information using a multichannel approach. The inversion of Rayleigh surface waves provided a subsurface estimate for the uppermost 8 m of the lunar subsurface with the shear wave velocities varying from 40 to 50 m/s at the surface to velocities in the range of 95–145 m/s with an average of 120 m/s at a depth of about 7 m. Generally, the results from this inversion demonstrated good agreement with previous studies. Also, we carried out numerical modeling of wave propagation in a highly-heterogeneous domain to examine the effects of such anomalous features on the acquired seismograms. Results confirmed that a sharp-contrast bi-material domain can indeed produce significant coda wave as reflected on the lunar seismic traces.

中文翻译：

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使用单接收器多通道仿真 (MSOR) 方法和随机场建模重新访问月球地震实验数据

过去 20 年中表面波测试的重大进步促使研究人员重新审视和重新分析存档的地震记录，特别是那些涉及月球测量的记录。最近对月球地震测量所做的这些努力的目标是进一步了解月球地质。我们使用多通道方法检查了来自阿波罗 16 号任务的活动地震数据的表面波信息。瑞利表面波的反演提供了月球地下最上层 8 m 的地下估计，表面的剪切波速度从 40 到 50 m/s 不等，平均速度范围为 95-145 m/s在约 7 m 的深度处为 120 m/s。一般来说，这种反演的结果与以前的研究非常吻合。还，我们在高度异质域中对波传播进行了数值建模，以检查此类异常特征对采集的地震图的影响。结果证实，强烈对比的双材料域确实可以产生显着的尾波，如月球地震轨迹所反映的那样。