A stationary source refers to qualitative term used to describe any fixed emitter of air pollutants such as crude oilburning power plants oil refineries petrochemical plants and other heavy industrial facilitiesThe air pollutants released from a stationary source may accelerate the corrosion processStationary sources are also known as.
As a mantle plume reaches the upper mantle it melts into a diapirThis molten material heats the asthenosphere and lithosphere triggering volcanic eruptionsThese volcanic eruptions make a minor contribution to heat loss from Earth’s interior although tectonic activity at plate boundaries is the leading cause of such heat loss.
Aug 20 2011nbsp018332The mantle has no huge source of heat of itselfThe mantle is in continuous convection and is also conducting heat from the outer core and in turn from the inner core.
Thermal histories of convective earth models and constraints on radiogenic heat production in the Earth J.
Heat from the core about 9 TW solid Earth tides 1 to 2 TW and thermal contraction 2 TW are nonradiogenic sources that may add 1213 TW to the mantle heat flow about the same as the current nondelayed mantle radiogenic contribution.
If the radioactively enriched crust is stably stratified at the surface the mantle heat sources are reducedShortlived isotopes in particular 26 Al with a halflife of 074 Ma might also have played an important role in heating rocky bodies when the solar system was first forming eGosh and McSween 1998 Merk et al.
Jan 17 2013nbsp018332The mantle is in continuous convection and is also conducting heat from the outer core and in turn from the inner coreIn the core materials themselves mainly nickel and iron are also many of.
May 20 2015nbsp018332The lithosphere is the solid outer part of the EarthThe lithosphere includes the brittle upper portion of the mantle and the crust the outermost layers of Earth’s structureIt is bounded by the atmosphere above and the asthenosphere another part of the upper mantle belowAlthough the rocks of the lithosphere are still considered elastic they are not viscous.
Melting anomalies in the Earths upper mantle have often been attributed to the presence of mantle plumes that may originate in the lower mantle possibly from the coremantle boundaryGlobally mantle plumes exhibit a large range in buoyancy flux that is proportional to their temperature and volume.
Nov 03 2020nbsp018332Answer The source of heat in a mantle convection currents comes from the Earths molten outer core decay of radioactive elements and in the upper mantle friction from descending tectonic plates.
Of where mantle plumes originate ein the lower or upper mantle or at the coremantle boundary and what controls their buoyancy flux and thus upwelling rate see equation 1.
The nature of the mantle sources and their degree of partial melting can be obtained from the rareearth elements on a plot of LaYb versus DyYb Fig18 and can be interpreted as a result of different degrees of partial melting at variable depths within the oceanic lithosphere spinel and garnetlherzolite facies ca.
The rate of heat loss from the Earth is a balance between cooling of the mantle energy loss from the core and radiogenic productionThe total energy loss of the Earth is constrained to be 46.
This could only happen he reasoned if relatively small longlasting and exceptionally hot regions called hotspots existed below the plates that would provide localized sources of high heat energy thermal plumes to sustain volcanismSpecifically Wilson hypothesized that the distinctive linear shape of the Hawaiian IslandEmperor.
We have studied the effects of radiogenic heat sources Q m and heat flux from the deep mantle q∞ on the multivalued relation between shear stress at the base of the lithosphere τ and plate velocity u 0If there are sufficient heat sources in the asthenosphere or if considerable heat flows up from the deep mantle τ increases with u 0 such states are called subcritical.
With the boundary conditions T T0 for x 0 and x 2l 2l being the thickness of the layerWe introduce the dimensionless variables τ αT – T0 and ξ xl.
1 Melting anomalies in the Earths upper mantle have often been attributed to the presence of mantle plumes that may originate in the lower mantle possibly from the coremantle boundaryGlobally mantle plumes exhibit a large range in buoyancy flux that is proportional to their temperature and volume.
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