Improved techniques for size–frequency distribution analysis in the planetary sciences: Application to blocks on 25143 Itokawa
Improved techniques for size–frequency distribution analysis in the planetary sciences: Application to blocks on 25143 Itokawa
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行星科学中尺寸频率分布分析的改进技术：应用于 25143 Itokawa 上的区块
DOI：
10.1016/j.icarus.2014.10.009
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发表时间：
2015
期刊：
影响因子：
3.2
通讯作者：
E. Bierhaus
中科院分区：
文献类型：
--
作者：
I. DeSouza;M. Daly;O. Barnouin;C. Ernst;E. Bierhaus
尺寸频率分布的分析对于研究行星体以及陨石坑和块体的应用很常见。然而，对累积块分布使用线性回归的常用方法会受到系统误差的影响，可能导致低估不确定性和/或斜率偏差。 Clauset 等人提出的幂律拟合程序。首次应用于区块或陨石坑数据集：小行星 25143 Itokawa 的全球区块调查。除了新结果之外，还讨论了小行星块群的准备和呈现块分布统计数据的重要性。最后，评估了不同的块大小调整方法，并证明了质量驱动方法相对于幂律拟合的大小驱动方法的优势。
The analysis of size–frequency distributions is common for studying planetary bodies with applications for craters and blocks. However, the common method of using a linear regression on cumulative block distributions is subject to systematic errors that can lead to an underestimation of uncertainties and/or a biasing of the slope. The power-law fitting procedure proposed by Clauset et al. is applied for the first time to a block or crater dataset: the global block survey of Asteroid 25143 Itokawa. Along with new results, a discussion of the importance on the preparation and presentation of block distribution statistics is also given in the context of asteroid block populations. Finally, different block sizing methods are evaluated and demonstrate the advantages of a mass-driven approach rather than a size-driven approach for a power-law fitting.