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Physics of our days


The anisotropy of properties of the Earth’s inner core


Institute of Geophysics, Siberian Branch, Russian Academy of Sciences, Universitetskii prosp. 3, Novosibirsk, 630090, Russian Federation

The anisotropy of properties of the Earth’s inner core can be seen from the fact that the time a seismic wave takes to traverse the core along the rotation axis is 1 % less than the time taken in the equator plane. Another piece of evidence comes from the splitting of the Earth’s eigen oscillation spectra. In addition to the velocity difference between traversing the core along and normal to the rotation axis, a lateral core anisotropy has been discovered both from function splitting and travel time data. This phenomenon is discussed.

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Fulltext is also available at DOI: 10.1070/PU1997v040n09ABEH000285
PACS: 91.35.−x, 91.30.Dk (all)
DOI: 10.1070/PU1997v040n09ABEH000285
URL: https://ufn.ru/en/articles/1997/9/e/
A1997YB48900004
Citation: Kuznetsov V V "The anisotropy of properties of the Earth's inner core" Phys. Usp. 40 951–961 (1997)
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Оригинал: Кузнецов В В «Анизотропия свойств внутреннего ядра Земли» УФН 167 1001–1012 (1997); DOI: 10.3367/UFNr.0167.199709e.1001

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