scholarly journals Analysis of Influence of Seismic Oscillations on Precision Laser Plants’ Work

2019 ◽  
Vol 1238 ◽  
pp. 012024
Author(s):  
K Gubskiy ◽  
S Sorokin ◽  
M Reshetova ◽  
V Reshetov
Keyword(s):  
Seismic Oscillations

Traces of the strong earthquakes in ancient Mikhaylovka archeological monument, Kerch’ Peninsula, Crimea

2018 ◽  
Author(s):  
А.М. Корженков ◽  
А.Н. Овсюченко ◽  
А.С. Ларьков ◽  
А.В. Мараханов ◽  
Е.А. Рогожин ◽  
...  
Keyword(s):  
Seismic Intensity ◽  
City Wall ◽  
Strong Earthquakes ◽  
Counterclockwise Rotation ◽  
Kerch Peninsula ◽  
Systematic Character ◽  
Seismic Oscillations ◽  
The Hill ◽  
Northern Wall ◽  
Northern City

In the paper there are results of archeoseismological study of an antic archeological monument – Mikhaylovka hill-fort located in Kerch’ peninsula. Studied deformations complex includes: systematic tilts, shifts and collapses of building constructions of latitudinal strike northward. Building elements of longitudinal strike tilted, shifted and collapsed westward. We revealed one counterclockwise rotation in a wall part which was not anchored. Most impressive and unique is shearing and shifting southward of a significant fragment of northern city wall. The revealed deformations in the trench No. III of Mikhaylovka hill-fort undoubtedly demonstrate their seismogenic origin. Large number of double walls – original walls and counterforce ones – “krepida’s” testifies on at least two events of destruction and deformation in Mikhaylovka fort-hill. Local seismic intensity was apparently (VIII) ≤ Io ≤ IX. According to numismatic founds and fire traces first earthquake occurred in beginning of II century AD, second earthquake - in III century AD. Maximum summary seismic oscillations during first earthquakes propagated apparently in latitudinal direction which led to wedging of significant part of the northern wall of the hill-fort. Seismic shocks during second earthquakes went along NNW-SSE axis. This direction is testified be systematic character of tilts, shifts and collapses of the walls of both directions.

Seismic oscillations of an elastic rectangular structure protected by a viscoelastic stratum: in-plane problem

Meccanica ◽  
2014 ◽  
Vol 49 (9) ◽  
pp. 2013-2023
Author(s):  
Michele Ciarletta ◽  
Mezhlum A. Sumbatyan ◽  
Vincenzo Tibullo
Keyword(s):  
Plane Problem ◽  
Seismic Oscillations

scholarly journals Study of longitudinal oscillations of a five-storey building on the basis of plate continuum model

2019 ◽  
Vol 97 ◽  
pp. 04065 ◽  
Author(s):  
Javlon Yarashov ◽  
Makhamatali Usarov ◽  
Gayratjon Ayubov
Keyword(s):  
Finite Element ◽  
Continuum Model ◽  
Anisotropic Plate ◽  
Element Model ◽  
Plate Model ◽  
Theory Of Plates ◽  
Seismic Oscillations ◽  
Moduli Of Elasticity ◽  
Storey Building ◽  
The Continuum

Continuum plate model in the form of a cantilever anisotropic plate developed in the framework of the bimoment theory of plates describing seismic oscillations of buildings is proposed in this paper as a dynamic model of a building. Formulas for the reduced moduli of elasticity, shear and density of the plate model of a building are given. Longitudinal oscillations of a building are studied using the continuum plate and box-like models of the building with Finite Element Model. Numerical results are obtained in the form of graphs, followed by their analysis.

scholarly journals The PLATO space mission: studying planetary transits and stellar oscillations simultaneously

2008 ◽  
Vol 4 (S253) ◽  
pp. 564-566
Author(s):  
Malcolm Fridlund
Keyword(s):  
Thermal Environment ◽  
Space Mission ◽  
High Time Resolution ◽  
Stellar Oscillations ◽  
Cosmic Vision ◽  
Exoplanetary Systems ◽  
Seismic Oscillations ◽  
Host Stars ◽  
Very High ◽  
Planetary Transits

AbstractPLATO (PLAnetary Transits and Oscilliations of stars) is a proposed mission of the European Space Agency's Science programme Cosmic Vision 2015–2025, currently under industrial study, and with a planned launch by the end of 2017. Its task is to better understand the properties of exoplanetary systems. As such it will detect and characterise exoplanets using their transit signature in front of a large sample of bright stars and simultaneously measuring the seismic oscillations of the parent star of these exoplanets. The mission will be orbiting the Sun-Earth L2 point, which provides a stable thermal environment and maximum uninterrupted observing efficiency. The payload consists of a number (> 28) of individual catadioptric telescopes, covering > 550 sq. degrees. Since the goal is to search for terrestrial exoplanets within the habitable zone of their host stars, and carry out asteroseismological observations of the host stars, very high photometric precision, high time resolution, and high duty-cycle visible photometry is required. Ground-based observations are needed to complement the observations made by PLATO to allow for further exoplanetary characterization. This paper consists of a summary of the preliminary results achieved by the ESA internal pre-assessment study.

scholarly journals Quasi-Periodic Oscillations in magnetars: linking variability and emission

2012 ◽  
Vol 8 (S291) ◽  
pp. 155-158
Author(s):  
Caroline D'Angelo
Keyword(s):  
New Work ◽  
Periodic Oscillations ◽  
Emission Process ◽  
Global Oscillation ◽  
Seismic Oscillations

AbstractI present recent results studying flare emission in magnetars. Strong quasi-periodic oscillations observed in the tail of giant magnetar flares are frequently interpreted as evidence for global seismic oscillations. I demonstrate that such a global oscillation is not directly observable in the lightcurve. New work suggests the amplitude for the strongest QPO stays nearly constant in the rotation phases where it is observed, which I argue suggests it is produced by an additional emission process from the star.

scholarly journals Global Seismic Oscillations in Soft Gamma Repeaters

1998 ◽  
Vol 498 (1) ◽  
pp. L45-L49 ◽  
Author(s):  
Robert C. Duncan
Keyword(s):  
Soft Gamma Repeaters ◽  
Seismic Oscillations

scholarly journals Continual model and dynamic calculation of buildings under seismic impacts

2020 ◽  
Vol 329 ◽  
pp. 04011
Author(s):  
M. K. Usarov ◽  
G. T. Ayubov ◽  
D. M. Usarov
Keyword(s):  
Anisotropic Plate ◽  
Element Model ◽  
Plate Model ◽  
Dynamic Calculation ◽  
Continual Model ◽  
Theory Of Plates ◽  
Seismic Oscillations ◽  
Seismic Impacts ◽  
Moduli Of Elasticity ◽  
The Continuum

Continuum plate model in the form of a cantilever anisotropic plate developed in the framework of the bimoment theory of plates describing seismic oscillations of buildings is proposed in this paper as a dynamic model of a building. Formulas for the reduced moduli of elasticity, shear and density of the plate model of a building are given. Longitudinal oscillations of a building are studied using the continuum plate and box-like models of the building with Finite Element Model. Numerical results are obtained in the form of graphs, followed by their analysis.

Numerical Analysis of the Exact Solution of the Wave Equation of the Longitudinal Seismic Oscillations of Soil and the Construction as a Point Insertion

2018 ◽  
Vol 931 ◽  
pp. 152-157 ◽  
Author(s):  
Kamil D. Yaxubayev ◽  
Dinara D. Kochergina
Keyword(s):  
Differential Equation ◽  
Ordinary Differential Equation ◽  
Partial Differential Equation ◽  
Exact Solution ◽  
Wave Equation ◽  
Numerical Analysis ◽  
Differential Equations ◽  
Partial Differential ◽  
Seismic Oscillations

The numerical analysis of the exact solution of the system of the differential equations which includes the partial differential equation of the longitudinal seismic oscillations of the soil and the ordinary differential equation of oscillations of the construction in the form of a point rigid insertion.

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