Testing polar spots of water-rich permafrost on the Moon: LEND observations onboard LRO
Testing polar spots of water-rich permafrost on the Moon: LEND observations onboard LRO
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测试月球上富含水的永久冻土的极点：LRO 上的 LEND 观测
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
A. Vostrukhin
中科院分区：
文献类型：
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作者：
I. Mitrofanov;M. Litvak;A. Sanin;A. Malakhov;D. Golovin;W. Boynton;G. Droege;G. Chin;L. Evans;K. Harshman;F. Fedosov;J. Garvin;A. Kozyrev;T. McClanahan;G. Milikh;M. Mokrousov;R. Starr;R. Sagdeev;V. Shevchenko;V. Shvetsov;V. Tretyakov;J. Trombka;A. Varenikov;A. Vostrukhin
[1]给出了LRO上的LAND仪器探测月球两极超热中子发射的局部抑制和过量的结果。共探测到12个局部中子抑制区(NSRS)和12个中子超额区(NERS)。使用LOLA和Diviner仪器的数据表明，六个NSR具有“较少的局部照射和较低的温度-较少的局部中子”的经验性质。这些NSR可能与月球上富含水冰的永久冻土点相一致。结果表明，探测到的NSR既包含在永久阴影区，也包括在永久照明区，它们与极地陨石坑底部的永久阴影区(PSR)并不重合，这是人们在提供高空间分辨率的中子数据之前通常所预期的。
[1] Results are presented for the LEND instrument onboard LRO for the detection of local spots of suppression and excess of epithermal neutron emission at the lunar poles. Twelve local Neutron Suppression Regions (NSRs) and Neutron Excess Regions (NERs) are detected. It is shown using the data from the LOLA and Diviner instruments that six NSRs have the empirical property “less local irradiation and lower temperature – fewer local neutrons.” These NSRs may be identified with spots of water-ice rich permafrost on the Moon. It is shown that detected NSRs are include in both permanently shadowed and illuminated areas, and they are not coincident with Permanently Shadowed Regions (PSRs) at the bottom of polar craters, as has been commonly expected before LEND presented neutron data with high spatial resolution.