Results 1 to 10 of about 2,423,805 (191)

Analytic Expressions for Radial Diffusion. [PDF]

J Geophys Res Space Phys, 2019
I briefly review, compare, and contrast two theoretical works that have significantly influenced radial diffusion research thus far, namely, the works of Fälthammar (1965, https://doi.org/10.1029/JZ070i011p02503) and the works of Fei et al. (2006, https:/
Lejosne S.
europepmc   +2 more sources

Competing mechanisms of radial and local diffusion in radiation belt electron dynamics during quiet-geomagnetic conditions [PDF]

Scientific Reports
While previous investigations utilizing high-resolution satellite observations (e.g., Van Allen Probes) have elucidated the competition between radial diffusion and local wave-driven acceleration mechanisms during geomagnetic storms, the relative ...
Qiongyue Zhang, Song Fu, Xin Ma, Weixin Chen, Jianhang Wang, Qi Zhu, Dongfang Zhai, Yibo Zhao, Xiangyuan Tong, Yuan Lei, Kunkun Xia, Yuequn Lou, Taifeng Jin, Binbin Ni   +13 more
doaj   +2 more sources

Inner zone and slot electron radial diffusion revisited

Geophysical Research Letters, 2016
Using recent data from NASA's Van Allen Probes, we estimate the quiet time radial diffusion coefficients for electrons in the inner radiation belt (L 
T. P. O'Brien, S. G. Claudepierre, T. B. Guild, J. F. Fennell, D. L. Turner, J. B. Blake, J. H. Clemmons, J. L. Roeder   +7 more
doaj   +2 more sources

Quantifying Extremely Rapid Flux Enhancements of Radiation Belt Relativistic Electrons Associated With Radial Diffusion

Geophysical Research Letters, 2018
Previous studies have revealed a typical picture that seed electrons are transported inward under the drive of radial diffusion and then accelerated via chorus to relativistic energies.
Si Liu, Qi Yan, Chang Yang, Qinghua Zhou, Zhaoguo He, Yihua He, Zhonglei Gao, Fuliang Xiao   +7 more
doaj   +2 more sources

Fast imaging of mean, axial and radial diffusion kurtosis. [PDF]

Neuroimage, 2016
Hansen B, Shemesh N, Jespersen SN.
europepmc   +2 more sources

Gaussian radial basis functions method for linear and nonlinear convection–diffusion models in physical phenomena

Open Physics, 2021
In this study, we propose a simple direct meshless scheme based on the Gaussian radial basis function for the one-dimensional linear and nonlinear convection–diffusion problems, which frequently occur in physical phenomena.
Wang Fuzhang, Zheng Kehong, Ahmad Imtiaz, Ahmad Hijaz   +3 more
doaj   +2 more sources

ULF Wave Driven Radial Diffusion During Geomagnetic Storms: A Statistical Analysis of Van Allen Probes Observations

Journal of Geophysical Research: Space Physics, 2021
The impact of radial diffusion in storm time radiation belt dynamics is well‐debated. In this study we quantify the changes and variability in radial diffusion coefficients during geomagnetic storms.
J. Sandhu, I. J. Rae, J. Wygant, A. Breneman, S. Tian, C. E. Watt, R. Horne, L. Ozeke, M. Georgiou, M. Walach   +9 more
semanticscholar   +1 more source

Novel functions of the root barrier to radial oxygen loss - radial diffusion resistance to H2 and water vapour.

New Phytologist, 2021
The root barrier to radial O2 loss (ROL) is a trait enabling waterlogging tolerance of plants. The ROL barrier restricts O2 diffusion to the anoxic soil so that O2 is retained inside root tissues.
L. L. Peralta Ogorek, E. Pellegrini, O. Pedersen   +2 more
semanticscholar   +1 more source

Radial Diffusion of Planetary Radiation Belts’ Particles by Fluctuations with Finite Correlation Time

Astrophysical Journal, 2021
Radial diffusion in planetary radiation belts is a dominant transport mechanism resulting in the energization and losses of charged particles by large-scale electromagnetic fluctuations.
A. Osmane, S. Lejosne
semanticscholar   +1 more source

Drift phase resolved diffusive radiation belt model: 1. Theoretical framework

Frontiers in Astronomy and Space Sciences, 2023
Most physics-based models provide a coarse three-dimensional representation of radiation belt dynamics at low time resolution, of the order of a few drift periods. The description of the effect of trapped particle transport on radiation belt intensity is
Solène Lejosne, Jay M. Albert
doaj   +1 more source