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| Titel |
Zonal concentration of some geophysical process intensity caused by tides and variations in the Earth's rotation velocity |
| VerfasserIn |
B. Levin, A. Domanski, E. Sasorova |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: 8th EGU Alexander von Humboldt Conference "Natural Disasters, Global Change, and the Preservation of World Heritage Sites" ; Nr. 35 (2014-01-06), S.137-144 |
| Datensatznummer |
250121280
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| Publikation (Nr.) |
 copernicus.org/adgeo-35-137-2014.pdf |
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| Zusammenfassung |
We analyzed what kind of fundamental physical phenomena can be responsible
for the generation of the anomalous latitudinal zones of the seismic
activity, and the hotspots, and some other geophysical processes. The
assessment of tidal effect contribution to the earthquake preparation process
is discussed. A disk model of the Earth's rotation was proposed. The model is
acceptable for the homogeneous Earth and for the heterogeneous one. The disk
model explains the nucleation of two maximums of the gradient of the moment
of inertia over latitude with respect to the Equator. Effects of the
variations in the Earth's rotation angular velocity were estimated and the
possible features caused by the rotation velocity instability were described.
The variations in the relative velocity of the Earth's rotation
(dimensionless value ν ≈ (T − P)/P) are approximately
equal upon the average to 10−8, where T is the observed length of day
for the Earth, and P is the astronomical day. These variations lead to the
occurrence of the additional energy estimated as 1020 J.
The authors proposed the hypothesis of a pulsating geoid based on effects of
the Earth's rotation features, and tidal forces, and conception of critical
latitudes in the solid Earth. This hypothesis may highlight the phenomenon of
zonal intensification of some geological processes in the solid Earth (the
seismic activity, and hotspot location, and major ore deposit locations). |
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