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首页> 外文期刊>Journal of geophysical research. Planets >Lunar Surface Gravimeter as a lunar seismometer: Investigation of a new source of seismic information on the Moon
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Lunar Surface Gravimeter as a lunar seismometer: Investigation of a new source of seismic information on the Moon

机译：月球重力仪作为月球地震仪：对月球上新的地震信息源的研究

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Lunar seismology has always suffered from the limited number of seismic stations and limited coverage of the seismic network. Additional seismic data are necessary to probe the lunar interior in depth. Instead of a costly new deployment of seismometers, the aim of this study is to investigate the possibility of using the Apollo 17 Lunar Surface Gravimeter (LSG) as a lunar seismometer. The LSG was designed to detect gravitational waves (associated to change in the curvature of spacetime) and tidal groundmotion on the Moon, but the data were not investigated for seismic use partially because of a malfunction of the instrument. We first evaluated the influence of the malfunction through comparison with other Apollo seismic data and found that the effect of themalfunction is small, and the LSG detected seismic signals in a manner that was consistent with those of the other Apollo seismometers. Then we carried out source location with the additional station of the LSG. We relocated previously located deep moonquake nests to evaluate the influence of the LSG data, which are generally noisier than other Apollo seismic data. Then we located deep moonquake nests that were previously unlocatable. Forty deep moonquake nests were examined, and we located five new nests. One newly located nest, A284, was most likely to be located on the farside. This series of analyses indicates that the LSG functioned as a lunar seismometer, and that its data are useful for improving seismic analyses with the previous seismic data set of the Moon.
机译：月球地震学一直受地震台数有限和地震网络覆盖率有限的困扰。要探究月球内部深度，还需要其他地震数据。这项研究的目的不是研究昂贵的新部署的地震仪，而是研究使用Apollo 17月球表面重力仪（LSG）作为月球地震仪的可能性。 LSG旨在检测月球上的引力波（与时空曲率的变化有关）和潮汐地震动，但由于仪器故障，因此未对地震数据进行部分调查。我们首先通过与其他阿波罗地震数据进行比较来评估故障的影响，发现故障的影响很小，并且LSG以与其他阿波罗地震仪一致的方式检测到地震信号。然后，我们与LSG的附加站点进行了源定位。我们重新定位了先前位于深处的地震巢，以评估LSG数据的影响，而LSG数据通常比其他阿波罗地震数据的噪声更大。然后，我们找到了以前无法找到的深层地震巢。检查了40个深层的地震巢，我们找到了五个新巢。一个新定位的巢穴A284最有可能位于远处。这一系列分析表明，LSG用作月球地震仪，并且其数据可用于改进月球以前的地震数据集的地震分析。

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