نتایج جستجو برای: oib like volcanism
تعداد نتایج: 656131 فیلتر نتایج به سال:
The coupled interior–atmosphere system of terrestrial exoplanets remains poorly understood. Exoplanets show a wide variety sizes, densities, surface temperatures, and interior structures, with important knock-on effects for this system. Many are predicted to have “stagnant lid” at the surface, rigid stationary crust, sluggish mantle convection, only minor volcanism. However, if Earth-like plate...
The tidal heating of hypothetical rocky (or terrestrial) extrasolar planets spans a wide range of values depending on stellar masses and initial orbits. Tidal heating may be sufficiently large (in many cases, in excess of radiogenic heating) and long-lived to drive plate tectonics, similar to the Earth’s, which may enhance the planet’s habitability. In other cases, excessive tidal heating may r...
A variety of geophysical data indicates that long wavelength temperature variations of the asthenosphere depart from the mean by + 200øC, not the + 20øC adopted by plume theoreticians. The 'normal' variation, caused by plate tectonic processes (subduction cooling, continental insulation, smallscale convection) encompasses the temperature excesses that have been attributed to hot jets and therma...
[1] Temperature observations from the Northern Hemisphere reveal a warming since 1861 which is larger in winter than in summer. Possible explanations for a decline in seasonal spread are discussed using the Earth system model CLIMBER-2. Simulations forced by natural and anthropogenic factors (Milankovitch forcing, solar variability, volcanism, atmospheric CO2 concentration, deforestation) gener...
During its first two flybys of Mercury, the MESSENGER spacecraft acquired images confirming that pervasive volcanism occurred early in the planet's history. MESSENGER's third Mercury flyby revealed a 290-kilometer-diameter peak-ring impact basin, among the youngest basins yet seen, having an inner floor filled with spectrally distinct smooth plains. These plains are sparsely cratered, postdate ...
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