Model of the Influence of Gravity-Wave Radiation from Relativistic Double Star Systems on the Electric Field in the Troposphere

2021 ◽  
Author(s):  
L. V. Grunskaya ◽  
V. V. Isakevich ◽  
D. V. Isakevich
Keyword(s):  
Electric Field ◽  
Gravity Wave ◽  
Double Star ◽  
Wave Radiation

Model of the influence of gravity-wave radiation of relativistic double star systems on the electric field in the troposphere

2021 ◽  
pp. 114-120
Author(s):  
L.V. Grunskaya ◽  
◽  
V.V. Isakevich ◽  
D.V. Isakevich ◽  
◽  
...  
Keyword(s):  
Electric Field ◽  
Gravity Wave ◽  
Gravity Waves ◽  
Electric Charge ◽  
Double Star ◽  
Wave Radiation ◽  
Small Displacement ◽  
Vertical Projection ◽  
The Earth ◽  
Proposed Model

A model is proposed which explains the observed effect of gravity-wave influence of relativistic binaries to the Earth’s electric field vertical projection in the near-ground atmosphere layer. The considered mechanism is a perturbation of the Earth’s orbit by the gravity waves which leads to a small displacement between the Earth and the Earth’s atmosphere free electric charge. The proposed model give amplitude estimations of Ez components spectrally localized at the relativistic binaries gravity waves’ frequencies which do not contradict to the observations.

scholarly journals Inertia–gravity-wave radiation by a sheared vortex

2008 ◽  
Vol 596 ◽  
pp. 169-189 ◽  
Author(s):  
E. I. ÓLAFSDÓTTIR ◽  
A. B. OLDE DAALHUIS ◽  
J. VANNESTE
Keyword(s):  
Gravity Wave ◽  
Couette Flow ◽  
Gravity Waves ◽  
Dimensional Structure ◽  
Analytic Description ◽  
Wave Radiation ◽  
Rossby Number ◽  
Spontaneous Radiation ◽  
Initial State ◽  
Inertia Gravity Waves

We consider the linear evolution of a localized vortex with Gaussian potential vorticity that is superposed on a horizontal Couette flow in a rapidly rotating strongly stratified fluid. The Rossby number, defined as the ratio of the shear of the Couette flow to the Coriolis frequency, is assumed small. Our focus is on the inertia–gravity waves that are generated spontaneously during the evolution of the vortex. These are exponentially small in the Rossby number and hence are neglected in balanced models such as the quasi-geostrophic model and its higher-order generalizations. We develop an exponential-asymptotic approach, based on an expansion in sheared modes, to give an analytic description of the three-dimensional structure of the inertia–gravity waves emitted by the vortex. This provides an explicit example of the spontaneous radiation of inertia–gravity waves by localized balanced motion in the small-Rossby-number regime.The inertia–gravity waves are emitted as a burst of four wavepackets propagating downstream of the vortex. The approach employed reduces the computation of inertia–gravity-wave fields to a single quadrature, carried out numerically, for each spatial location and each time. This makes it possible to unambiguously define an initial state that is entirely free of inertia–gravity waves, and circumvents the difficulties generally associated with the separation between balanced motion and inertia–gravity waves.

scholarly journals Parameter Sweep Experiments on Spontaneous Gravity Wave Radiation from Unsteady Rotational Flow in an f-Plane Shallow Water System

2008 ◽  
Vol 65 (1) ◽  
pp. 235-249 ◽  
Author(s):  
Norihiko Sugimoto ◽  
Keiichi Ishioka ◽  
Katsuya Ishii
Keyword(s):  
Shallow Water ◽  
Gravity Wave ◽  
Power Law ◽  
Water System ◽  
Wave Radiation ◽  
Earth’S Rotation ◽  
Rotational Flow ◽  
Earth's Rotation ◽  
Shallow Water System ◽  
Wave Flux

Abstract Inertial gravity wave radiation from an unsteady rotational flow (spontaneous radiation) is investigated numerically in an f-plane shallow water system for a wide range of Rossby numbers, 1 ≤ Ro ≤ 1000, and Froude numbers, 0.1 ≤ Fr ≤ 0.8. A barotropically unstable jet flow is initially balanced and maintained by forcing so that spontaneous gravity wave radiation is generated continuously. The amount of gravity wave flux is proportional to Fr for large Ro(≥30), which is consistent with the power law of the aeroacoustic sound wave radiation theory (the Lighthill theory). In contrast, for small Ro(≤10) this power law does not hold because of the vortex stabilization due to the small deformation radius. In the case of fixed Fr, gravity wave flux is almost constant for larger Ro(>30) and decreases rapidly for smaller Ro(<5). There is a local maximum value between these Ro(∼10). Spectral frequency analysis of the gravity wave source shows that for Ro = 10, while the source term related to the earth’s rotation is larger than that related to unsteady rotational flow, the inertial cutoff frequency is still lower than the peak frequency of the dominant source. The results suggest that the effect of the earth’s rotation may intensify spontaneous gravity wave radiation for Ro ∼ 10.

scholarly journals On the Relative Contribution of Inertia–Gravity Wave Radiation to Asymmetric Instabilities in Tropical Cyclone–like Vortices

2016 ◽  
Vol 73 (9) ◽  
pp. 3345-3370 ◽  
Author(s):  
Konstantinos Menelaou ◽  
David A. Schecter ◽  
M. K. Yau
Keyword(s):  
Tropical Cyclone ◽  
Gravity Wave ◽  
Tropical Cyclones ◽  
Potential Vorticity ◽  
Three Dimensional ◽  
Life Cycles ◽  
Wave Radiation ◽  
Ambient Conditions ◽  
Layer Potential ◽  
The Impact

Abstract Intense atmospheric vortices such as tropical cyclones experience various asymmetric instabilities during their life cycles. This study investigates how vortex properties and ambient conditions determine the relative importance of different mechanisms that can simultaneously influence the growth of an asymmetric perturbation. The focus is on three-dimensional disturbances of barotropic vortices with nonmonotonic radial distributions of potential vorticity. The primary modes of instability are examined for Rossby numbers between 10 and 100 and Froude numbers in the broad neighborhood of unity. This parameter regime is deemed appropriate for tropical cyclone perturbations with vertical length scales ranging from the depth of the vortex to moderately smaller scales. At relatively small Froude numbers, the main cause of instability inferred from analysis typically involves the interaction of vortex Rossby waves with each other and/or critical-layer potential vorticity perturbations. As the Froude number increases from its lower bound, the main cause of instability transitions to inertia–gravity wave radiation. In some cases, the transition occurs abruptly at a critical point where a mode whose growth is driven almost entirely by radiation suddenly becomes dominant. In other cases, the transition is gradual and less direct as the fastest-growing mode continuously changes its structure. Examination of the angular pseudomomentum budget helps quantify the impact of radiation. The radiation-driven instabilities examined herein are shown to be quite fast and potentially relevant to real-world tropical cyclones. Their sensitivities to parameterized moisture and outer vorticity skirts are briefly addressed.

scholarly journals Gravity Wave Generation by the Electromagnetic Field

2021 ◽  
Vol 2 (2) ◽  
Author(s):  
Takaaki Musha
Keyword(s):  
Electromagnetic Field ◽  
Electric Field ◽  
Gravitational Wave ◽  
Gravity Wave ◽  
High Intensity ◽  
Rest Mass ◽  
Wave Generation

According to the theory on the relation between the rest mass and ZPF field in the vacuum, the author shows the possibility to generate a gravitational wave by the high intensity impulsive electric field.

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