Inner Core: The Inner Core is the layer beneath the mantle and forms the earth's center with a radius of about 122000M. A high temperature of 5700 K is almost close to the sun's temperature. The inner core's composition is Iron and nickel alloy and other elements. ...
The Earth’s solid inner core is a highly attenuating medium. It consists mainly of iron. The high attenuation of sound wave propagation in the inner core is at odds with the widely accepted paradigm of hexagonal close-packed phase stability under inner core conditions, because sound waves propa...
Besides iron, the existence of some light elements are long believed to be within the Earth's inner core due to its lower density than that of pure iron. Although silicon, hydrogen, carbon, and oxygen have been suggested to be the candidates, their state in the inner core is rarely consid...
The results of analysis of more than 1300 new PKiKP/PcP amplitude ratios measured in Southeast Asia and South America at the epicentral distances of 3.2°–35.2° are presented. The density jump in the Eastern Hemisphere of the Earth's inner core (IC) is 0.3 g/cm 3 , and it is 0.9 ...
that the interior of the Earth is much denser than the rest of the planet. That’s because the average density of the planet is 5.5 g/cm3, while the surface is only 3 g/cm3. In other words, if the surface is less dense than the Earth, on average, then the core must be much ...
We thus obtain strong indications in favour of the lunar mantle overturn scenario and, in this context, demonstrate the existence of the lunar inner core with a radius of 258 ± 40 km and density 7,822 ± 1,615 kg m−3. Our results question the evolution of the Moon ...
In the process of the Earth′s expansion as gravitational constant decrease,the density structure of inner core and mantle is two evident different the area,it is clearly that inertia increase of the inner core and the mantle is not synchronization with the state of ideal inertia expansion.In ...
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Summary This chapter addresses some of the physical properties of solid iron and iron alloys at high pressure and high temperature directly relevant for the interpretations of seismic observations and for the modeling of earth's inner core. Density is possibly the most fundamental quantity needed for...
Under the assumption that the inner core is a stratifying ellipsoid whose density function is fitted out from PREM and the super rotation rate is 0.270.53°/yr, calculations show that the global temporal variations on the Earth's surface have a maximum value of about 0.791.54×103 μGal and...