Carrillo-Sanchez, JD, Nesvorny, D, Pokorny, P et al. (2 more authors) (2016) Sources of Cosmic Dust in the Earth's Atmosphere. Geophysical Research Letters, 43 (23). pp. 11979-11986. ISSN 0094-8276
Abstract
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 COBE and Planck observations of the Zodiacal Cloud.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016. The Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. |
Keywords: | Cosmic Dust, Meteoric ablation, Comets, Asteroids, Mesospheric metal layers, Cosmic spherules |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemistry (Leeds) > Physical Chemistry (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 08 Dec 2016 09:54 |
Last Modified: | 24 Sep 2020 11:29 |
Published Version: | https://doi.org/10.1002/2016GL071697 |
Status: | Published |
Publisher: | American Geophysical Union (AGU) |
Identification Number: | 10.1002/2016GL071697 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:109123 |
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