Vertical Stability of the Earth Inner Core
نویسندگان
چکیده
منابع مشابه
The inner inner core of Earth.
T solid inner core (Fig. 1) is the most remote and enigmatic part of our planet, and, next to the crust, is the smallest ‘‘official’’ subdivision of Earth’s interior. It was discovered in 1936 (1), and by 1972 it was established that it was solid, albeit with a very small rigidity (2–4). By 1993 it had been established that it was crystalline (5). The inner core is isolated from the rest of Ear...
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The rationale is disclosed for a substructure within the Earth's inner core, consisting of an actinide subcore at the center of the Earth, surrounded by a subshell composed of the products of nuclear fission and radioactive decay. Estimates are made as to possible densities, physical dimensions, and chemical compositions. The feasibility for self-sustaining nuclear fission within the subcore is...
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We present a three-dimensional model of the seismic anisotropy and texturing of iron crystals in the inner core. The form of the anisotropy changes suddenly at slightly less than half of the inner core radius. The outer part is composed of iron crystals of a single phase with different degrees of preferred alignment along the spin axis of the Earth. The inner part may be composed of a different...
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It has been suggested about 20 years ago that the liquid close to the inner core boundary (ICB) is supercooled and that a sizable mushy layer has developed during the growth of the inner core. The morphological instability of the liquid-solid interface which usually results in the formation of a mushy zone has been intensively studied in metallurgy, but the freezing of the inner core occurs in ...
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Inner Earth is a project to develop an online activity set to help children learn and think about what is inside the Earth. The child is taken on a ride in an elevator to the core of the Earth and they stop along the way to undertake certain activities involving plants, sewers, mines, fossils, convection and magma. The system was developed between imedia in Providence, Rhode Island, USA, and Qu...
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ژورنال
عنوان ژورنال: Journal of Geography & Natural Disasters
سال: 2012
ISSN: 2167-0587
DOI: 10.4172/2167-0587.1000103