Carrillo-Sánchez J D, Nesvorný D, Pokorný P, Janches D, Plane J M C
School of Chemistry University of Leeds Leeds UK.
Department of Space Studies Southwest Research Institute Boulder Colorado USA.
Geophys Res Lett. 2016 Dec 16;43(23):11979-11986. doi: 10.1002/2016GL071697. Epub 2016 Dec 14.
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), in good accord with Cosmic Background Explorer and Planck observations of the zodiacal cloud.
木星族彗星、小行星、哈雷型彗星和奥尔特云彗星。在此，我们将来自天文模型的这些宇宙尘埃群体的质量、速度和辐射分布与化学消融模型相结合，以估计钠和铁注入地球高层大气的速率，以及宇宙球粒落到地球表面的通量。将这些参数与87.5千米以上垂直钠和铁通量的激光雷达观测结果以及南极测量的宇宙球粒积聚速率进行比较，结果表明木星族彗星贡献了总输入质量（43±14吨/天）的（80±17）%，这与宇宙背景探测器和普朗克对黄道云的观测结果高度一致。
