Unsolved problems in strong thermal emission velocity enhancement (STEVE) and the picket fence

Y Nishimura, A Dyer, L Kangas, E Donovan… - Frontiers in Astronomy …, 2023 - frontiersin.org
This paper reviews key properties and major unsolved problems about Strong Thermal
Emission Velocity Enhancement (STEVE) and the picket fence. We first introduce the basic …

A new technique for determining Substorm Onsets and Phases from Indices of the Electrojet (SOPHIE)

C Forsyth, IJ Rae, JC Coxon… - Journal of …, 2015 - Wiley Online Library
We present a new quantitative technique that determines the times and durations of
substorm expansion and recovery phases and possible growth phases based on percentiles …

Corotating interaction regions during solar cycle 24: A study on characteristics and geoeffectiveness

R Hajra, JV Sunny - Solar Physics, 2022 - Springer
Corotating interaction regions (CIRs) form in the interaction region between the solar-wind
high-speed streams and slow streams, leading to compressed plasma and magnetic fields …

Substorm occurrence rates, substorm recurrence times, and solar wind structure

JE Borovsky, K Yakymenko - Journal of Geophysical Research …, 2017 - Wiley Online Library
Two collections of substorms are created: 28,464 substorms identified with jumps in the
SuperMAG AL index in the years 1979–2015 and 16,025 substorms identified with electron …

The midlatitude positive bay index and the statistics of substorm occurrence

RL McPherron, X Chu - Journal of Geophysical Research …, 2018 - Wiley Online Library
The auroral breakup and expansion are essential features of a magnetospheric substorm.
Negative bays beneath the aurora and positive bays at midlatitudes accompany the …

Statistical characteristics of substorms with different intensity

H Fu, C Yue, QG Zong, XZ Zhou… - Journal of Geophysical …, 2021 - Wiley Online Library
Geomagnetic substorm is one of the essential solar wind‐magnetosphere energy coupling
processes. In this study, we present a statistical analysis of substorms with different …

Supersubstorms during storms of September 7–8, 2017

IV Despirak, NG Kleimenova, LI Gromova… - Geomagnetism and …, 2020 - Springer
The development of two supersubstorms (ie, very intense substorms with an amplitude of
more than 2000 nT) recorded in the main phase of two consecutive strong magnetic storms …

Statistical properties of long‐period plasmapause surface waves from Van Allen Probes observations

ZJ Feng, J Ren, QG Zong, TY Xiang… - Journal of Geophysical …, 2023 - Wiley Online Library
Recent work revealed the existence of plasmapause surface waves (PSWs) with Van Allen
Probes observations, which are characterized by the periodic modulations of both …

[HTML][HTML] Seasonal features of geomagnetic activity: a study on the solar activity dependence

A Marques de Souza Franco, R Hajra… - Annales …, 2021 - angeo.copernicus.org
Seasonal features of geomagnetic activity and their solar-wind–interplanetary drivers are
studied using more than five solar cycles of geomagnetic activity and solar wind …

Intense geomagnetically induced currents (GICs): Association with solar and geomagnetic activities

R Hajra - Solar Physics, 2022 - Springer
We present a statistical study of the intense geomagnetically induced currents (GICs) in the
subauroral region, which can damage ground electronic systems. From the natural gas …