Physics
Scientific paper
Jan 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.319..303m&link_type=abstract
Nature (ISSN 0028-0836), vol. 319, Jan. 23, 1986, p. 303-305.
Physics
82
Earth Hydrosphere, Magma, Planetary Evolution, Primitive Earth Atmosphere, Protoplanets, Terrestrial Planets, Accretion Disks, Degassing, Hypervelocity Impact, Surface Temperature, Water Vapor
Scientific paper
Early rapid formation of the atmosphere and hydrosphere on the terrestrial planets has recently been proposed. The authors present a quantitative study of this process during accretion by planetesimal impacts. These impacts increase the surface temperature and thus affect the formation of either a proto-atmosphere or a proto-hydrosphere by degassing of volatiles. It is shown that an impact-induced H2O atmosphere increases the surface temperature of the Earth to a stage where a magma ocean is possible, with the total amount of H2O in the proto-atmosphere clustering around 1021kg. The apparent coincidence of the H2O abundance in the proto-atmosphere with the present mass (≡1.4×1021kg) of the ocean may be evidence for an impact origin for the atmosphere and hydrosphere.
Abe Yasuhiro
Matsui Takafumi
No associations
LandOfFree
Evolution of an impact-induced atmosphere and magma ocean on the accreting earth does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Evolution of an impact-induced atmosphere and magma ocean on the accreting earth, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evolution of an impact-induced atmosphere and magma ocean on the accreting earth will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1847392