甲板上地震学：未来行星地震学从InSight获得的经验
On-deck seismology: Lessons from InSight for future planetary seismology
摘要：
在部署到火星表面之前，InSight任务的短周期（SP）地震仪在甲板上运行了总共48小时。该数据集可用于了解如何在未来的火星，欧罗巴和其他行星的着陆任务中使用甲板安装的地震仪。当在甲板上操作时，SP地震仪显示出与Viking-2地震仪相当的信号，接近3 Hz，Viking仪器的灵敏度达到峰值。风的灵敏度显示出与Viking仪器相似的模式，尽管对于给定的风速，InSight上的振幅要大80%左右。然而，在晚风小时，频率在0.1和1 Hz之间的仪器噪声水平与地球上安静的台站相当，尽管部署到风和热屏蔽层以下的表面将加速功率的安装噪声降低了大约40 dB。根据观测到的噪音水平和估计的火星地震活动率，甲板上安装的仪器对地震的检测概率足够低，可能需要长达数年的甲板记录才能观察到一个事件。由于噪声主要由作用在着陆器上的风控制，因此甲板上安装的地震仪可能更适合部署在无空气的物体上，评估目标物体的地震活动性和着陆器的具体设计非常重要。如果噪声水平与火星上的低风时间段相当，那么对于一些拟议的地震活动模型，在欧罗巴上运行的检测概率达到99%以上。
英文摘要：
Before deploying to the surface of Mars, the short-period (SP) seismometer of the InSight mission operated on deck for a total of 48 hours. This dataset can be used to understand how deck-mounted seismometers can be used in future landed missions to Mars, Europa, and other planetary bodies. While operating on deck, the SP seismometer showed signals comparable to the Viking-2 seismometer near 3 Hz where the sensitivity of the Viking instrument peaked. Wind sensitivity showed similar patterns to the Viking instrument, although amplitudes on InSight were ~80% larger for a given wind velocity. However, during the low wind evening hours the instrument noise levels at frequencies between 0.1 and 1 Hz were comparable to quiet stations on Earth, although deployment to the surface below the Wind and Thermal Shield lowered installation noise by roughly 40 dB in acceleration power. With the observed noise levels and estimated seismicity rates for Mars, detection probability for quakes for a deck-mounted instrument are low enough that up to years of on-deck recordings may be necessary to observe an event. Because the noise is dominated by wind acting on the lander, though, deck-mounted seismometers may be more practical for deployment on airless bodies, and it is important to evaluate the seismicity of the target body and the specific design of the lander. Detection probabilities for operation on Europa reach over 99% for some proposed seismicity models for a similar duration of operation if noise levels are comparable to low-wind time periods on Mars.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
