Mathematics – Logic
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja.....7635m&link_type=abstract
EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #7635
Mathematics
Logic
Scientific paper
The introduction of melting into calculations of temperature-dependent viscosity convection in planetary mantles leads to some interesting and non-intuitive behavior when melt segregation and eruption becomes a significant heat transport process. In the absence of melting, the internal temperature is controlled by the rheological temperature scale and the temperature at the bottom boundary, and the thickness of the lithosphere is controlled by the amount of heat that must be conducted through it. When melting is included, the mean temperature of the interior is instead controlled by the intersection of the conductive lithospheric temperature profile with the solidus, and is relatively independent of the temperature at the bottom of the mantle. This results in much cooler downwellings than would be predicted in the absence of melting. These downwellings refrigerate the interior, making temperatures lower, convection more sluggish, the boundary layers thicker, heat flux from the core larger, and stresses in the lithosphere higher. Since the heat flux is dominated by the flux of melt to the surface, the heat balance that determines the thickness of the lithosphere is also altered. A parameterization of these effects will be tested against a suite of numerical simulations. An interesting consequence of melting is that at higher Rayleigh numbers the lithosphere is thinner and the solidus is intersected at lower pressure, enhancing the refrigeration effect to reduce the internal temperature further and produce melts at shallower depths.
No associations
LandOfFree
Refrigeration of planetary mantles by melting 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 Refrigeration of planetary mantles by melting, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Refrigeration of planetary mantles by melting will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-843882