The young sun and the atmosphere and photochemistry of the early earth
作者： V. M. Canuto , J. S. Levine , T. R. Augustsson , C. L. Imhoff , M. S. Giampapa
DOI: 10.1038/305281A0
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摘要: The origin and evolution of the Earth's early atmosphere depend crucially on dissipation time tN primitive solar nebula, SN. Using different theories turbulence, we estimate that for a 0.1 M⊙ SN, is 2.5–8.3Myr. Because accretion times are usually much longer, conclude most planetary must have occurred in gas-free environment. new IUE data, wavelength-dependent UV flux constructed young Sun which then used to study photochemistry concentrations O, O2, O3, OH, H, HCO formaldehyde H2CO prebiological atmosphere.
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