The nonlinear behavior of whistler waves at the reconnecting dayside magnetopause as observed by the Magnetospheric Multiscale mission: A case study

2017 ◽  
Vol 122 (5) ◽  
pp. 5487-5501 ◽  
Author(s):  
F. D. Wilder ◽  
R. E. Ergun ◽  
D. L. Newman ◽  
K. A. Goodrich ◽  
K. J. Trattner ◽  
...  
Keyword(s):  
Nonlinear Behavior ◽  
Whistler Waves ◽  
Dayside Magnetopause ◽  
Magnetospheric Multiscale ◽  
Magnetospheric Multiscale Mission

scholarly journals The geometric factor of electrostatic plasma analyzers: A case study from the Fast Plasma Investigation for the Magnetospheric Multiscale mission

2012 ◽  
Vol 83 (3) ◽  
pp. 033303 ◽  
Author(s):  
Glyn A. Collinson ◽  
John C. Dorelli ◽  
Levon A. Avanov ◽  
Gethyn R. Lewis ◽  
Thomas E. Moore ◽  
...  
Keyword(s):  
Geometric Factor ◽  
Magnetospheric Multiscale ◽  
Magnetospheric Multiscale Mission ◽  
Plasma Investigation

Model predictive control of a CSTR: A hybrid modeling approach

2010 ◽  
Vol 64 (3) ◽  
Author(s):  
Michal Kvasnica ◽  
Martin Herceg ◽  
Ľuboš Čirka ◽  
Miroslav Fikar
Keyword(s):  
Model Predictive Control ◽  
Predictive Control ◽  
Linear Models ◽  
Nonlinear Behavior ◽  
Continuous Stirred Tank Reactor ◽  
Modeling Framework ◽  
Future Evolution ◽  
Continuous Stirred Tank ◽  
Traditional Approaches

AbstractThis paper presents a case study of model predictive control (MPC) applied to a continuous stirred tank reactor (CSTR). It is proposed to approximate nonlinear behavior of a plant by several local linear models, enabling a piecewise affine (PWA) description of the model used to predict and optimize future evolution of the reactor behavior. Main advantage of the PWA model over traditional approaches based on single linearization is a significant increase of model accuracy which leads to a better control quality. It is also illustrated that, by adopting the PWA modeling framework, MPC strategy can be implemented using significantly less computational power compared to nonlinear MPC setups.

New Insights into the Nature of Turbulence in the Earth's Magnetosheath Using Magnetospheric MultiScale Mission Data

2018 ◽  
Vol 859 (2) ◽  
pp. 127 ◽  
Author(s):  
H. Breuillard ◽  
L. Matteini ◽  
M. R. Argall ◽  
F. Sahraoui ◽  
M. Andriopoulou ◽  
...  
Keyword(s):  
Magnetospheric Multiscale ◽  
Magnetospheric Multiscale Mission

scholarly journals On the alignment of velocity and magnetic fields within magnetosheath jets

2020 ◽  
Vol 38 (2) ◽  
pp. 287-296
Author(s):  
Ferdinand Plaschke ◽  
Maria Jernej ◽  
Heli Hietala ◽  
Laura Vuorinen
Keyword(s):  
Magnetic Fields ◽  
Entire Range ◽  
Dynamic Pressure ◽  
Bow Shock ◽  
Superposed Epoch Analysis ◽  
Magnetospheric Multiscale ◽  
Study Results ◽  
Epoch Analysis ◽  
The Magnetic Field

Abstract. Jets in the subsolar magnetosheath are localized enhancements in dynamic pressure that are able to propagate all the way from the bow shock to the magnetopause. Due to their excess velocity with respect to their environment, they push slower ambient plasma out of their way, creating a vortical plasma motion in and around them. Simulations and case study results suggest that jets also modify the magnetic field in the magnetosheath on their passage, aligning it more with their velocity. Based on Magnetospheric Multiscale (MMS) jet observations and corresponding superposed epoch analyses of the angles ϕ between the velocity and magnetic fields, we can confirm that this suggestion is correct. However, while the alignment is more significant for faster than for slower jets, and for jets observed close to the bow shock, the overall effect is small: typically, reductions in ϕ of around 10∘ are observed at jet core regions, where the jets' velocities are largest. Furthermore, time series of ϕ pertaining to individual jets significantly deviate from the superposed epoch analysis results. They usually exhibit large variations over the entire range of ϕ: 0 to 90∘. This variability is commonly somewhat larger within jets than outside them, masking the systematic decrease in ϕ at core regions of individual jets.

scholarly journals Mechanism of Reconnection on Kinetic Scales Based on Magnetospheric Multiscale Mission Observations

2019 ◽  
Vol 885 (1) ◽  
pp. L26 ◽  
Author(s):  
W. M. Macek ◽  
M. V. D. Silveira ◽  
D. G. Sibeck ◽  
B. L. Giles ◽  
J. L. Burch
Keyword(s):  
Magnetospheric Multiscale ◽  
Magnetospheric Multiscale Mission
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