Nonlinear evolution of equatorial spreadF: 1. On the role of plasma instabilities and spatial resonance associated with gravity wave seeding

1996 ◽  
Vol 101 (A1) ◽  
pp. 283-292 ◽  
Author(s):  
Chao-Song Huang ◽  
Michael C. Kelley
Keyword(s):  
Gravity Wave ◽  
Nonlinear Evolution ◽  
Plasma Instabilities ◽  
Spatial Resonance

scholarly journals Numerical Simulations of a Gravity Wave Event over CCOPE. Part I: The Role of Geostrophic Adjustment in Mesoscale Jetlet Formation

1997 ◽  
Vol 125 (6) ◽  
pp. 1185-1211 ◽  
Author(s):  
Michael L. Kaplan ◽  
Steven E. Koch ◽  
Yuh-Lang Lin ◽  
Ronald P. Weglarz ◽  
Robert A. Rozumalski
Keyword(s):  
Numerical Simulations ◽  
Gravity Wave ◽  
Geostrophic Adjustment ◽  
Wave Event

Role of gravity wave seed perturbations in ESF day-to-day variability: A quantitative approach

2016 ◽  
Vol 57 (4) ◽  
pp. 1021-1028 ◽  
Author(s):  
G. Manju ◽  
M.K. Madhav Haridas ◽  
R.P. Aswathy
Keyword(s):  
Gravity Wave ◽  
Quantitative Approach

scholarly journals Role of Plasma Instabilities in Auroral Phenomena

Nature ◽  
1965 ◽  
Vol 205 (4975) ◽  
pp. 998-998 ◽  
Author(s):  
BRUNO COPPI
Keyword(s):  
Plasma Instabilities ◽  
Auroral Phenomena

scholarly journals Gravity Wave Emission by Shear Instability

2019 ◽  
Vol 49 (9) ◽  
pp. 2393-2406 ◽  
Author(s):  
Carsten Eden ◽  
Manita Chouksey ◽  
Dirk Olbers
Keyword(s):  
Gravity Wave ◽  
Single Layer ◽  
Internal Gravity Waves ◽  
Shear Instability ◽  
Vertical Shear ◽  
Wave Signal ◽  
Wave Emission ◽  
Balanced Flow ◽  
Single Layer Model

AbstractGravity wave emission by geostrophically balanced flow is diagnosed in numerical simulations of lateral and vertical shear instabilities. The diagnostic method in use allows for a separation of balanced flow and residual wave signal up to fourth order in the Rossby number (Ro). While evidence is found for a small but finite gravity wave emission from balanced flow in a single-layer model with large lateral shear and large Ro, a vertically resolved model with moderate velocity amplitudes appropriate to the interior ocean hardly shows any wave emission. Only when static instabilities generated by the shear instability of the balanced flow are allowed can a gravity wave signal similar to the ones reported in earlier studies be detected in the vertically resolved case. This result suggests a relatively small role of spontaneous wave emission in the classical sense of Lighthill radiation, and emphasizes the role of convective or symmetric instabilities during frontogenesis for the generation of internal gravity waves in the ocean and atmosphere.

scholarly journals Relativistic filamentary equilibria

2010 ◽  
Vol 77 (2) ◽  
pp. 193-205 ◽  
Author(s):  
M. GEDALIN ◽  
A. SPITKOVSKY ◽  
M. MEDVEDEV ◽  
M. BALIKHIN ◽  
V. KRASNOSELSKIKH ◽  
...  
Keyword(s):  
Current Sheet ◽  
Inertial Confinement Fusion ◽  
Nonlinear Evolution ◽  
Analytical Description ◽  
Inertial Confinement ◽  
Collisionless Shocks ◽  
Confinement Fusion ◽  
Linear And Nonlinear ◽  
Periodic Current

AbstractPlasma filamentation is often encountered in collisionless shocks and inertial confinement fusion. We develop a general analytical description of the two-dimensional relativistic filamentary equilibrium and derive the conditions for existence of potential-free equilibria. A pseudopotential equation for the vector-potential is constructed for cold and relativistic Maxwellian distributions. The role of counter-streaming is explained. We present single current sheet and periodic current sheet solutions, and analyze the equilibria with electric potential. These solutions can be used to study linear and nonlinear evolution of the relativistic filamentation instability.

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