Earth's melting due to the blanketing effect of the primordial dense atmosphere

Details Earth's melting due to the blanketing effect of the primordial dense atmosphere Earth's melting due to the blanketing effect of the primordial dense atmosphere

Apr 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979e%26psl..43...22h&link_type=abstract

Earth and Planetary Science Letters, vol. 43, no. 1, Apr. 1979, p. 22-28.

Physics

34

Dense Plasmas, Melting, Primitive Earth Atmosphere, Protoplanets, Atmospheric Temperature, Blankets, Deposition, Hydrostatic Pressure, Opacity, Planetary Mass, Planetary Nebulae, Temperature Distribution

Scientific paper

When the proto-earth was growing by the accretion of planetesimals and its mass became greater than about 0.1 present-earth mass, an appreciable amount of gas of the surrounding solar nebula was attracted toward the proto-earth to form an optically thick, dense atmosphere. The structure of this primordial atmosphere is studied under the assumptions that (1) it is spherically symmetric in hydrostatic equilibrium, and (2) the net energy outflow (i.e., the luminosity) is constant throughout the atmosphere. The results of calculations show that the temperature at the bottom of the atmosphere, namely, at the surface of the proto-earth increases greatly with the mass of the proto-earth and it is about 1500 K for a proto-earth mass of 0.25 present-earth mass. This high temperature is due to the blanketing effect of the opaque atmosphere. Thus, as long as the primordial solar nebula was existing, the surface temperature of the proto-earth was kept high enough to melt most of the materials and, hence, the melted iron sedimented towards the center to form the earth's core.

Affiliated with

Also associated with

No associations

Rating

Earth's melting due to the blanketing effect of the primordial dense atmosphere 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 Earth's melting due to the blanketing effect of the primordial dense atmosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Earth's melting due to the blanketing effect of the primordial dense atmosphere will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1435524