The relative importance of these three mechanisms is evaluated, using a simple model in which the conduit of the convective flow is prescribed. The first mechanism of mechanically driven flow dominates the other two when the effective viscosity of the mantle wedge exceeds 1020 Pa s (1021 P). ...
Although the Moon is much smaller than the Earth, dynamic processes took place in its interior and helped shape its surface. It is suggested that compositionally driven convection was dominant in the early evolution after the solidification of the lunar magma ocean – often also termed as mantle ...
millionsofyearstherocksofthemantleflow.Hot,less denserockrisesupfromnearthecoretowardsthesurface whereitcoolsandeventuallysinksbacktowardsthecore. Thisdensity-drivenmovementofmaterialiscalled convection,theprimarywayinwhichheatistransferred fromdeepwithinEarthtoitssurface. ...
Seismic evidence of on-going sublithosphere upper mantle convection for intra-plate volcanism in Northeast China 热度: Convection batch process ovens 热度: nullAtmospheric Heat Convection 热度: 相关推荐 Chapter8 MantleConvection Itisnowvirtuallycommonknowledge,extendingintotheschoolcurriculum,that the...
Convergence to results presented in this study The findings presented here were determined to have reached a statistically steady state when the time averaged difference in the surface and core-mantle-boundary heat flows: $$\frac{3({F}_{0}-{F}_{{\rm{b}}})({f}^{2})}{1+f+{f}^{2...
Lifting the cover of the cauldron: convection in hot planets. Geochem. Geophys. Geosyst. 15, 4617–4630 (2014). Article ADS Google Scholar Labrosse, S. Hotspots, mantle plumes and core heat loss. Earth Planet. Sci. Lett. 199, 147–156 (2002). Article ADS CAS Google Scholar Choblet...
We found that the addition of heat source in the mantle transition zone considerably enhances the onset of upwelling plumes in the upper mantle, which further reduces the time scale of continental drift. The heat source also causes massive mechanical mixing, especially in the upper mantle. The ...
Magmain the Earth's mantle moves in convection currents. The hot core heats the material above it, causing it to rise toward the crust, where it cools. The heat comes from the intense pressure on the rock, combined with the energy released from the naturalradioactive decayof elements. The...
Advection involves the horizontal movement of substances like air or water, primarily driven by wind or currents, whereas convection is the vertical transfer of heat within a fluid through the movement of heated particles.
water in oil cooler and condensers are driven by pumps, which are forced convection. In addition, the project also often encounters the heat transfer problems ofliquid boilingon thehot surfaceand vapor condensation on the cold surface, hereinafter referred to asboiling heat transferandcondensation ...