火星探测器的地震响应：对未来行星地震学的影响
Seismic response of the Mars Curiosity Rover: Implications for future planetary seismology
摘要：
地震测量是探索行星内部的一个重要工具，但由于在表面放置敏感仪器的复杂性，可能不会包括在飞行任务中。为了帮助解决这一问题，我们评估的保真度地面运动的记录由放置在甲板上的工程模型的火星科学实验室的仪器相比，放置在地面上直接下方的相同的仪器。记录的比较显示，两种仪器都清晰地记录了大地震。仪器之间的转换函数表明甲板仪器受到着陆器共振频率的影响，并且不能忠实地记录这些频率或更高频率的地面运动。此外，在由于空调循环的强气流期间，在1 Hz附近观察到额外的退相干。然而，在2秒和30秒之间的重要地震带中，始终可以观察到极好的相干性和接近1的转换函数，并在夜间空调不运行时一直延伸到着陆器共振。这表明，甲板上安装的地震仪器可能能够提供有价值的科学回报，而不需要额外的部署复杂性。
英文摘要：
Seismic measurements are an important tool for exploration of planetary interiors, but may not be included in missions due to perceived complexity in placement of sensitive instruments on the surface. To help address this concern, we assess the fidelity of recordings of ground motion by an instrument placed on the deck of the engineering model of the Mars Science Laboratory compared with an identical instrument placed on the ground directly beneath. Comparison of the recordings reveals clear recordings of teleseismic earthquakes on both instruments. The transfer function between the instruments demonstrates the deck instrument is affected by resonance frequencies of the lander, and does not faithfully record ground motion at these frequencies or higher. In addition, additional decoherence is observed near 1 Hz during periods of strong airflow due to air conditioning cycling. However, excellent coherence and a transfer function near 1 can be observed in the important seismic band between 2 and 30 seconds at all times and extending up to the lander resonances during the night time when air conditioning was not running. This suggests a deck-mounted seismic instrument may be able to provide valuable science return without requiring additional deployment complexity.
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