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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >Polar hydrogen deposits on the Moon
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Polar hydrogen deposits on the Moon

机译：极性氢沉积在月球上

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Neutron and gamma-ray data measured using the Lunar Prospector spectrometers were analyzed to define the enhanced hydrogen deposits near both poles of the Moon. Combining the new low-altitude neutron data (30 +/- 15 km) with previous high-altitude (100 +/- 20 km) neutron data and the results of several recent radar investigations sharply constrains the characteristics of each of the polar deposits. The deposits at the north appear to be in the form of many small pockets or of generally distributed hydrogen that average to a 100 ppm weight fraction enhancement over that which exists in regolith at more equatorial latitudes. Those deposits in the permanently shaded craters near the south pole are consistent with a thick ferroan anorthosite regolith containing an enhancement of 1670 +/- 890 ppm hydrogen, which, if in the form of water ice, amounts to 1.5 +/- 0.8% weight fraction of H2O. Neutron data alone cannot discriminate between hydrogen implanted in lunar soil from the solar wind, hydrated minerals, or H2O. These craters appear to be surrounded by regolith that either contains small pockets of enhanced hydrogen or is soil that is uniformly impregnated with hydrogen enhanced on average by about 100 ppm above that contained in soils at more equatorial latitudes. [References: 34]
机译：分析了使用Lunar Prospector光谱仪测得的中子和伽马射线数据，以确定月球两极附近增强的氢沉积物。将新的低空中子数据（30 +/- 15 km）与以前的高空（100 +/- 20 km）中子数据相结合，以及最近几项雷达研究的结果，极大地限制了每个极地沉积物的特征。北部的沉积物似乎是许多小凹坑或普遍分布的氢的形式，这些氢的平均重量分数比赤道纬度的粉煤灰中的重量分数增加了100 ppm。在南极附近永久阴影的陨石坑中的沉积物与厚的铁锰铁钙铁矿块长石一致，其中氢含量增加了1670 +/- 890 ppm，如果以水冰的形式存在，则重量为1.5 +/- 0.8％分数的H2O。光靠中子数据就无法区分太阳风中注入的氢，水合矿物质或H2O。这些陨石坑似乎被重灰岩所包围，重灰岩要么含有少量的增强的氢，要么是被平均浸有氢的土壤所浸渍的氢，其平均水平比赤道纬度地区的土壤所含的氢平均高出约100 ppm。 [参考：34]

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