WL
Member Since 2012
William J. Longley
Research Professor, New Jersey Institute of Technology
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The Generation of 150 km Echoes Through Nonlinear Wave Mode Coupling
GEOPHYSICAL RESEARCH LETTERS
26 march 2024
William J. Longley
A fundamental problem in plasma turbulence is understanding how energy cascades across multiple scales. In this paper, a new weak turbulence theory...
K2 Simulations of Radiation Belt Wave-Particle Interactions
NATURAL AND MAN-MADE ACCELERATION, LOSS, AND TRANSPORT OF ENERGETIC PARTICLES THROUGH WAVE-PARTICLE INTERACTIONS I POSTER
spa-magnetospheric physics | 15 december 2023
Suhail Aldhurais, Anthony A. Chan, Scot R. Elkingt...
The physical mechanisms responsible for radiation belt dynamics have a wide range of spatial and temporal scales, and developing a simulation code tha...
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Simulating radio wave propagation and scintillation at the smallest scales
OBSERVATIONAL AND MODELING STUDIES OF IONOSPHERIC IRREGULARITIES AND SCINTILLATION II ORAL
spa-aeronomy | 15 december 2023
William J. Longley, Alexander Green, Meers M. Oppe...
At high latitudes the gradient-drift instability creates plasma turbulence across multiple spatial scales, leading to strong scintillation for GNSS an...
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A Kinetic Theory for Nonlinear Wave Mode Coupling
NONLINEAR AND NONRESONANT WAVE-PARTICLE INTERACTIONS IN EARTH’S MAGNETOSPHERE I POSTER
spa-magnetospheric physics | 11 december 2023
William J. Longley
A fundamental problem in studies of turbulence is understanding how energy cascades across multiple scales. In this presentation, a new weak turbulenc...
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Contrasting precipitation and magnetopause loss processes in the radiation belts
RADIATION BELT DYNAMICS: WAVE-PARTICLE INTERACTIONS AND RADIATION BELT MODELING II ORAL
spa-magnetospheric physics | 11 december 2023
Scot R. Elkington, Anthony A. Chan, Suhail Aldhura...
The global dynamics of the Van Allen radiation belts depend on a delicate balance of transport, acceleration, and loss among the constituent particle ...
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Simulating the Upper Hybrid Instability as a Cause for 150 km Echoes
JOURNAL OF GEOPHYSICAL RESEARCH: SPACE PHYSICS
25 april 2023
Alexander Green, Meers M. Oppenheim, William J. Lo...
One Hundred and Fifty kilometer echoes are a type of strong radar echo observed in the valley region of the equatorial ionosphere, whose origin was...
Initial K2 Simulations for the Geomagnetic Storm of March 17, 2013
MULTI-POINT OBSERVATIONS AND MODELING OF RADIATION BELT PARTICLE ACCELERATION, TRANSPORT, AND LOSS IV POSTER
spa-magnetospheric physics | 16 december 2022
Suhail Aldhurais, Anthony A. Chan, Scot R. Elkingt...
Understanding the energetic particle environment in geospace is of great importance to our space technology, and many computational models have been d...
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The generation of 150 km echoes through nonlinear wave mode coupling
ADVANCES IN LOW-LATITUDES THERMOSPHERE AND IONOSPHERE III ORAL
spa-aeronomy | 16 december 2022
William J. Longley
150 km echoes are strong, coherent echoes observed by equatorial radars looking close to perpendicular to Earth's magnetic field. Observations over a ...
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