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Sub-Auroral Polarization Stream (SAPS) duration as determined from Van Allen Probe successive electric drift measurements

We examine a characteristic feature of the magnetosphere-ionosphere coupling, namely, the persistent and latitudinally narrow bands of rapid westward ion drifts called the Sub-Auroral Polarization Streams (SAPS). Despite countless works on SAPS, information relative to their durations is lacking. Here, we report on the first statistical analysis of more than 200 near-equatorial SAPS observations based on more than two years of Van Allen Probe electric drift measurements. First, we present results relative to SAPS radial loca ...

Lejosne, ène; Mozer, F.;

YEAR: 2017     DOI: 10.1002/2017GL074985

duration; electric drift measurements; magnetosphere-ionosphere coupling; SAPS; Van Allen Probes


The Comprehensive Inner Magnetosphere-Ionosphere Model

Simulation studies of the Earth\textquoterights radiation belts and ring current are very useful in understanding the acceleration, transport, and loss of energetic particles. Recently, the Comprehensive Ring Current Model (CRCM) and the Radiation Belt Environment (RBE) model were merged to form a Comprehensive Inner Magnetosphere-Ionosphere (CIMI) model. CIMI solves for many essential quantities in the inner magnetosphere, including ion and electron distributions in the ring current and radiation belts, plasmaspheric densit ...

Fok, M.-C.; . Y. Buzulukova, N; Chen, S.-H.; Glocer, A.; Nagai, T.; Valek, P.; Perez, J.;

YEAR: 2014     DOI: 10.1002/jgra.v119.910.1002/2014JA020239

inner magnetosphere; magnetosphere-ionosphere coupling; ring current; Radiation belts; Van Allen Probes