当前位置: X-MOL 学术Meteorit. Planet. Sci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Benford’s law: Applications to ordinary‐chondrite mass distributions
Meteoritics and Planetary Science ( IF 2.2 ) Pub Date : 2021-03-09 , DOI: 10.1111/maps.13626
Alan E. Rubin 1, 2
Affiliation  

For ordinary‐chondrite (OC) mass distributions, Benford’s law applies to the set of individual objects that survive intact on the Earth’s surface after atmospheric disruption of meteoroids. Among OCs, Antarctic finds conform more closely to Benford’s law than observed falls, Northwest Africa (NWA) finds, or Oman finds mainly because Antarctic OCs tend to be relatively unweathered (and mostly intact) and have not been aggregated as pairs under collective meteorite names. Deviations from Benford’s law can result from tampering with data sets. The set of OC falls reflects tampering with the original Benford distribution (produced by meteoroid disruption) by the deliberate aggregation of paired individual samples and inefficiencies in the collection of small samples. The sets of NWA and Oman OC finds have been affected by natural “tampering” of the original distributions principally by terrestrial weathering, which can cause sample disintegration. NWA finds were also affected by non‐systematic collection of samples influenced by commercial considerations; collectors preferred type‐3 OC as revealed by the high proportions of such specimens among NWA chondrites relative to those among falls and Oman and Antarctic finds. The percentage of type‐4 OC among falls is appreciably lower than in the sets of finds. This suggests that type‐4 chondrites are friable and disintegrate into numerous pieces; these are counted individually for the sets of finds, but collectively for falls. However, the fact that the percentages of type‐3 OC are not generally higher for finds may be that these samples tend to break into small pieces that are preferentially lost.

中文翻译:

本福德定律:在普通球粒体质量分布中的应用

对于普通球粒陨石(OC)的质量分布,本福德定律适用于在流星体大气破坏后在地球表面完好无损生存的单个物体的集合。在OC中,南极发现与本福德定律的一致性比所观察到的跌落更为接近,西北非洲(NWA)或阿曼发现的主要原因是南极OC相对较不风化(且大多完好无损)并且没有以成对的陨石名称成对聚集。篡改数据集可能导致与本福德定律的偏离。这组OC下降反映了对成对的单个样本的故意聚集以及小样本收集效率低下对原始Benford分布(由流星体破坏产生)的篡改。NWA和阿曼OC发现的集合主要受到陆地风化对原始分布的自然“篡改”影响,这可能会导致样品崩解。NWA的发现也受到商业考虑的非系统性样本收集的影响;收集者偏爱3型OC,这是因为NWA球粒陨石中的此类标本相对于瀑布以及阿曼和南极发现中标本的比例较高。跌落中的4型OC所占百分比明显低于发现的几组。这表明4型球粒陨石易碎并分解成许多碎片。这些被单独计入发现集合,但被统称为落差。然而,
更新日期:2021-04-02
down
wechat
bug