A new large‐scale map of the lunar crustal magnetic field at 30 km altitude covering latitudes from 65°S to 65°N has been produced using high‐quality vector magnetometer data from two complementary polar orbital missions, Lunar Prospector and SELENE (Kaguya). The map has characteristics similar to those of previous maps but better resolves the shapes and distribution of weaker anomalies. The strongest group of anomalies is located on the northwest side of the South Pole‐Aitken basin approximately antipodal to the Imbrium basin. On the near side, both strong isolated anomalies and weaker elongated anomalies tend to lie along lines oriented radial to Imbrium. These include named anomalies such as Reiner Gamma, Hartwig, Descartes, Abel, and Airy. The statistical significance of this tendency for elongated anomalies is verified by Monte Carlo simulations. Great circle paths determined by end points of elongated anomaly groups and the locations of five individual strong anomalies converge within the inner rim of Imbrium and intersect within the Imbrium antipode zone. Statistically significant evidence for similar alignments northwest of the Orientale basin is also found. The observed distribution of anomalies on the near side and the location of the strongest anomaly group antipodal to Imbrium are consistent with the hypothesis that iron from the Imbrium impactor was mixed into ejecta that was inhomogeneously deposited downrange in groups aligned radial to the basin and concentrated antipodal to the basin.

中文翻译：

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新的月球地壳磁场大图及其解释

使用来自两个互补的极地轨道飞行任务月球探月者和塞莱尼（Kaguya）的高质量矢量磁强计数据，绘制了一个新的大规模的月球地壳磁场图，覆盖了从65°S到65°N纬度的30 km高度。该地图的特征与以前的地图相似，但可以更好地解决较弱异常的形状和分布。最强的异常群位于南极-艾特肯盆地的西北侧，与伊姆布伦盆地相反。在近侧，强烈的孤立异常和较弱的拉长异常都倾向于沿径向指向Imbrium的线分布。这些包括命名异常，例如Reiner Gamma，Hartwig，笛卡尔，Abel和Airy。蒙特卡洛模拟证明了这种趋势对于拉长异常的统计意义。由细长异常组的端点和五个单独的强异常的位置确定的大圆路径会聚在Imbrium的内部边缘内，并在Imbrium对映体区域内相交。还发现了东方盆地西北部类似路线的统计显着证据。在近侧观察到的异常分布和对Imbrium的最强异常对映体的位置与以下假说相符：假想来自Imbrium撞击器的铁混入了喷出物，该喷出物不均匀地向下沉积在与盆地成一直线并集中了对映体的组中到盆地。由细长异常群的端点和五个单独的强异常的位置确定的大圆路径会聚在Imbrium的内部边缘内，并在Imbrium对映体区域内相交。还发现了东方盆地西北部类似路线的统计显着证据。在近侧观察到的异常分布和对Imbrium的最强异常对映体的位置与以下假说相符：假想来自Imbrium撞击器的铁混入了喷出物，该喷出物不均匀地向下沉积在与盆地成一直线并集中了对映体的组中到盆地。由细长异常组的端点和五个单独的强异常的位置确定的大圆路径会聚在Imbrium的内部边缘内，并在Imbrium对映体区域内相交。还发现了东方盆地西北部类似路线的统计显着证据。在近侧观察到的异常分布和最强的异常群对Imbrium的位置与假说相符，该假说来自Imbrium撞击器的铁被混入了喷出物中，该喷出物以不均匀的方式向下沉积在与盆地和浓缩的对映体成排的组中到盆地。还发现了东方盆地西北部类似路线的统计显着证据。在近侧观察到的异常分布和最强的异常群对Imbrium的位置与假说相符，该假说来自Imbrium撞击器的铁被混入了喷出物中，该喷出物以不均匀的方式向下沉积在与盆地和浓缩的对映体成排的组中到盆地。还发现了东方盆地西北部类似路线的统计显着证据。在近侧观察到的异常分布和对Imbrium的最强异常对映体的位置与以下假说相符：假想来自Imbrium撞击器的铁混入了喷出物，该喷出物不均匀地向下沉积在与盆地成一直线并集中了对映体的组中到盆地。