DOI: 10.1016/j.epsl.2018.04.023
Scopus记录号: 2-s2.0-85046074778
论文题名: Electric properties of dust devils
作者: Franzese G. ; Esposito F. ; Lorenz R. ; Silvestro S. ; Popa C.I. ; Molinaro R. ; Cozzolino F. ; Molfese C. ; Marty L. ; Deniskina N.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 493 起始页码: 71
结束页码: 81
语种: 英语
英文关键词: atmospheric electricity
; dust devils
; dust lifting process
; Earth
; Mars
; meteorology
Scopus关键词: Atmospheric electricity
; Budget control
; Drops
; Earth (planet)
; Electric fields
; Meteorology
; Pressure drop
; Storms
; Vortex flow
; Atmospheric electric field
; Dust concentration measurements
; Dust devils
; Dust lifting
; Electric field induced
; Induced electric fields
; Mars
; Statistical distribution
; Dust
; atmospheric electricity
; dust devil
; Earth
; electrical property
; Mars
; meteorology
; Sahara
英文摘要: Dust devils are one of the most effective phenomena able to inject dust grains into the atmosphere. On Mars, they play an important role to maintain the haze and can significantly affect the global dust loading, especially outside the dust storm season. Despite dust devils having been studied for a century and a half, many open questions regarding their physics still exist. In particular, the nature of the dust lifting mechanisms inside the vortices, the development of the induced electric field and the exact contribution to the global atmospheric dust budget are still debated topics. In this paper, we analyze the dust devil activity observed in the Moroccan Sahara desert during a 2014 field campaign. We have acquired the most comprehensive field data set presently available for the dust devils: including meteorological, atmospheric electric field and lifted dust concentration measurements. We focus our attention on the electric field induced by vortices, using this as the principal detection parameter. We present, for the first time, the statistical distribution of dust devil electric field and its relationships with the pressure drop, the horizontal and vertical vortex velocity and the total dust mass lifted. We also compare the pressure drop distribution of our sample with the ones observed on the martian surface showing the similarity of the dust devils samples and the usefulness of this study for the next martian surface missions. © 2018 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109879
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Osservatorio Astronomico di Capodimonte, Istituto Nazionale di Astrofisica, Napoli, Italy; Department of Physics “E. Pancini”, University of Naples “Federico II”, Napoli, Italy; John Hopkins University Applied Physical Laboratory, 11100 Johns Hopkins Road, Laurel, MD 20723, United States
Recommended Citation:
Franzese G.,Esposito F.,Lorenz R.,et al. Electric properties of dust devils[J]. Earth and Planetary Science Letters,2018-01-01,493