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DOI | 10.1029/2018GL080527 |
Laboratory Investigation of Rate of Electrostatic Dust Lofting Over Time on Airless Planetary Bodies | |
Hood, N.1,2; Carroll, A.1,2; Mike, R.1,2; Wang, X.1,2; Schwan, J.3; Hsu, H. -W.1,2; Horanyi, M.1,2 | |
2018-12-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:24页码:13206-13212 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | We present the laboratory results on electrostatic dust lofting rates expected on airless planetary bodies. Dust lofting is shown to be a time-dependent process that begins at a relatively fast rate on an initialized surface and slows down as time progresses. The slowdown is likely due to the filling of interparticle microcavities as a result of dust movement or the removal of loose upper layers, which reduces the microcavity charging effect. It is suggested that the transient dust lofting rate under the charging conditions at 1AU may reach several particles.cm(-2).s(-1) lasting over a short duration. Such intense electrostatic dust lofting could be responsible for transient phenomena such as the lunar horizon glow and could be intermittently sustained by other processes that reinitialize the surface conditions. The average dust lofting rate on a geological timescale is expected to remain low due to the rate decrease over time. Plain Language Summary Recent laboratory results have shown the most convincing evidence in support of the occurrences of electrostatic dust transport on the surfaces of airless planetary bodies. A critical question to assess its relative importance on surface processes is to understand how fast electrostatic dust transport can act. Here we present the laboratory results to estimate electrostatic dust lofting rates expected on airless bodies near 1AU. We found that dust lofting is a time-dependent process. It begins relatively fast and slows down as time progresses. The intense lofting rate of dust particles over a relatively short duration in local regions could be responsible for transient phenomena, such as the lunar horizon glow. Such intense rates can be intermittently revived by other processes that reset the surface conditions. Global changes in the regolith properties (e.g., surface morphology and porosity as well as space weathering effects) due to electrostatic dust transport could have a long geological timescale due to the rate decreasing over time. This work is important for understanding a fundamental planetary science question: How has regolith on airless bodies evolved over time. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000456404600004 |
WOS关键词 | LEVITATION ; SURFACES ; SATURN |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/27714 |
专题 | 气候变化 |
作者单位 | 1.Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA; 2.NASA SSERVIs Inst Modeling Plasma Atmospheres & C, Boulder, CO 80301 USA; 3.Univ Calif Riverside, Dept Mech Engn, Riverside, CA 92521 USA |
推荐引用方式 GB/T 7714 | Hood, N.,Carroll, A.,Mike, R.,et al. Laboratory Investigation of Rate of Electrostatic Dust Lofting Over Time on Airless Planetary Bodies[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(24):13206-13212. |
APA | Hood, N..,Carroll, A..,Mike, R..,Wang, X..,Schwan, J..,...&Horanyi, M..(2018).Laboratory Investigation of Rate of Electrostatic Dust Lofting Over Time on Airless Planetary Bodies.GEOPHYSICAL RESEARCH LETTERS,45(24),13206-13212. |
MLA | Hood, N.,et al."Laboratory Investigation of Rate of Electrostatic Dust Lofting Over Time on Airless Planetary Bodies".GEOPHYSICAL RESEARCH LETTERS 45.24(2018):13206-13212. |
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