DOI: 10.1002/2016GL071697
论文题名: Sources of cosmic dust in the Earth's atmosphere
作者: Carrillo-Sánchez J.D. ; Nesvorný D. ; Pokorný P. ; Janches D. ; Plane J.M.C.
刊名: Geophysical Research Letters
ISSN: 0094-8325
EISSN: 1944-8056
出版年: 2016
卷: 43, 期: 23 起始页码: 11979
结束页码: 11986
语种: 英语
英文关键词: asteroids
; comets
; cosmic dust
; cosmic spherules
; mesospheric metal layers
; meteoric ablation
Scopus关键词: Ablation
; Asteroids
; Dust
; Earth (planet)
; Earth atmosphere
; Sodium
; Upper atmosphere
; comets
; Cosmic dusts
; cosmic spherules
; Injection rates
; Jupiter-family comets
; Lidar observation
; Mesospheric metal layers
; Zodiacal clouds
; Cosmology
英文摘要: There are four known sources of dust in the inner solar system: Jupiter Family comets, asteroids, Halley Type comets, and Oort Cloud comets. Here we combine the mass, velocity, and radiant distributions of these cosmic dust populations from an astronomical model with a chemical ablation model to estimate the injection rates of Na and Fe into the Earth's upper atmosphere, as well as the flux of cosmic spherules to the surface. Comparing these parameters to lidar observations of the vertical Na and Fe fluxes above 87.5 km, and the measured cosmic spherule accretion rate at South Pole, shows that Jupiter Family Comets contribute (80 ± 17)% of the total input mass (43 ± 14 t d−1), in good accord with Cosmic Background Explorer and Planck observations of the zodiacal cloud. ©2016. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007486173&doi=10.1002%2f2016GL071697&partnerID=40&md5=552a959a8a73a44879409543c9104b3f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9288
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: School of Chemistry, University of Leeds, Leeds, United Kingdom
Recommended Citation:
Carrillo-Sánchez J.D.,Nesvorný D.,Pokorný P.,et al. Sources of cosmic dust in the Earth's atmosphere[J]. Geophysical Research Letters,2016-01-01,43(23).