Observations of crustal tide strains in the Elbrus area     

V. K. Milyukov  A. V. Kopaev  A. V. Lagutkina  A. P. Mironov  A. V. Myasnikov 《Izvestiya Physics of the Solid Earth》2007,43(11):922-930

Results of observations of tidal strains of the crust in the tectonically active Elbrus area of the Northern Caucasus carried out with the use of the Baksan SSAI laser interferometer strainmeter over the period from 2003 through 2006 are presented. Harmonic analysis is performed with the help of the ETERNA software package. Statistically significant time variations in the amplitudes of the main tidal waves M ₂ and O ₁ are revealed. The influence of the topography on tidal strains in the Baksan gorge is estimated at 22% (an increase in the measured strain values). The reduced amplitude factors of the main diurnal (O ₁) and semidiurnal (M ₂) waves are underestimated. Numerical modeling of tidal anomalies produced by regional heterogeneous inclusions is performed in a 2-D approximation. The observed anomaly of the M ₂ wave (12%) is shown to be due to the influence of the main magma-controlling fault associated with the deep magma source of the Elbrus dormant volcano.  相似文献   

Oceanic Loading and Local Distortions at the Baksan,Russia, and Gran Sasso,Italy, Strain Stations     

V. K. Milyukov  A. Amoruso  L. Crescentini  A. P. Mironov  A. V. Myasnikov  A. V. Lagutkina 《Izvestiya Physics of the Solid Earth》2018,54(2):336-348

Reliable use of strain data in geophysical studies requires their preliminary correction for ocean loading and various local distortions. These effects, in turn, can be estimated from the tidal records which are contributed by solid and oceanic loading. In this work, we estimate the oceanic tidal loading at two European strain stations (Baksan, Russia, and Gran Sasso, Italy) by analyzing the results obtained with the different Earth and ocean models. The influence of local distortions on the strain measurements at the two stations is estimated.  相似文献   

Estimation of Free Core Resonance Parameters Based on Long-Term Strain Observations in the Diurnal Frequency Band     

Milyukov  V. K.  Amoruso  A.  Crescentini  L.  Mironov  A. P.  Myasnikov  A. V.  Lagutkina  A. V. 《Izvestiya Physics of the Solid Earth》2019,55(3):389-396

Izvestiya, Physics of the Solid Earth - The free core nutation (FCN) is one of the Earth’s rotational eigenmodes, which is caused by the retrograde motion of the liquid core relative to the...  相似文献