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首页> 外文期刊>Journal of geophysical research. Planets >Reflection imaging of the Moon's interior using deep-moonquake seismic interferometry
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Reflection imaging of the Moon's interior using deep-moonquake seismic interferometry

机译:使用深色Quake地震干涉法对月球内部的反射成像

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摘要

The internal structure of the Moon has been investigated over many years using a variety of seismic methods, such as travel time analysis, receiver functions, and tomography. Here we propose to apply body-wave seismic interferometry to deep moonquakes in order to retrieve zero-offset reflection responses (and thus images) beneath the Apollo stations on the nearside of the Moon fromvirtual sources colocated with the stations. This method is called deep-moonquake seismic interferometry (DMSI). Our results show a laterally coherent acoustic boundary around 50km depth beneath all four Apollo stations. We interpret this boundary as the lunar seismic Moho. This depth agrees with Japan Aerospace Exploration Agency's (JAXA) SELenological and Engineering Explorer (SELENE) result and previous travel time analysis at the Apollo 12/14 sites. The deeper part of the image we obtain from DMSI shows laterally incoherent structures. Such lateral inhomogeneity we interpret as representing a zone characterized by strong scattering and constant apparent seismic velocity at our resolution scale (0.2–2.0Hz).
机译:多年来,使用多种地震方法(例如旅行时间分析,接收器功能和断层扫描)对月球的内部结构进行了研究。在这里,我们提议将人体波地震干涉量应用于深月Quakes,以检索Apollo站点下方的零偏移反射响应(以及图像),在月球近距离与车站的近距离源。该方法称为深量化地震干涉法(DMSI)。我们的结果表明,在所有四个阿波罗站点下方的50公里深度约50公里处,横向连贯的声学边界。我们将这个边界解释为月球地震莫霍。这个深度与日本航空勘探局(JAXA)的硒学和工程探索者(SELENE)的结果和以前的旅行时间分析在Apollo 12/14站点一致。我们从DMSI获得的图像的较深部分显示出侧向不一致的结构。这种横向不均匀性我们解释为代表一个区域,其特征是在我们的分辨率量表(0.2-2.0Hz)下以强散射和恒定的明显地震速度。

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