Horizontal-to-Vertical Spectral Ratio (HVSR) Analysis of the Martian Passive Seismic Data from the InSight Mission

机译：InSight任务火星被动地震数据的水平-垂直谱比（HVSR）分析

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Following a successful landing, NASA's Mars lander InSight placed its seismometer "SEIS" onto Mars on December 19, 2018. By early April 2019, SEIS measured and recorded the first known "Marsquake". Waveforms of this faint event were processed using the horizontal-to-vertical spectra ratio (HVSR) method. The HVSR method analyzes ambient noise recordings in three dimensions to determine the fundamental site resonance frequency. Results from the HVSR study yielded a local maximum on the H/V spectral curve at 3.2-3.8 Hz. Using this information, a thickness of 8-10 m was estimated for the Martian regolith at the data collection site. The estimated regolith thickness agrees well with the range for depth to a large-contrast interface suggested in the literature. While the interpretation of HVSR results can be subjective without an independent measure of ground truth, results highlight the potentials of HVSR for near-surface characterization of Mars.

机译：2018年12月19日，美国宇航局的火星登陆器洞察号成功着陆后，将其地震仪“SEIS”安置在火星上。到2019年4月初，SEIS测量并记录了已知的第一只“马赛克”。该微弱事件的波形采用水平-垂直光谱比（HVSR）方法进行处理。HVSR方法分析三维环境噪声记录，以确定基本现场共振频率。HVSR研究的结果在3.2-3.8 Hz的H/V频谱曲线上产生了局部最大值。利用这些信息，在数据收集地点估计火星表土的厚度为8-10米。估计的风化层厚度与文献中建议的大对比界面深度范围一致。虽然HVSR结果的解释可能是主观的，而无需对地面真实性进行独立测量，但结果突出了HVSR在火星近表面表征方面的潜力。

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《Biennial International Conference on Engineering, Science, Construction, and Operations in Challenging Environments》|2021年|108-115|共8页
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Siavash Mahvelati; Joseph Thomas Coe;
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Horizontal-to-Vertical Spectral Ratio (HVSR) Analysis of the Martian Passive Seismic Data from the InSight Mission

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