Abstract Auroral Kilometric Radiation (AKR) is the strongest terrestrial radio emission, and
emanates from the same electron acceleration regions from which particles precipitate into …

We investigate how statistical properties of the rate of change R of the surface horizontal
magnetic field in the United Kingdom differ during substorm expansion and recovery phases …

Abstract We examine how Sudden Commencements (SCs) and Storm Sudden
Commencements (SSCs) influence the occurrence of high rates of change of the magnetic …

Magnetosphere sawtooth oscillations have been observed during interplanetary coronal
mass ejection (ICME) events, when the solar wind conditions are relatively steady, and …

Superposed epoch analyses have shown that, on average, the interplanetary magnetic field
(IMF) turns northward close to substorm onset. This has been commonly accepted as …

It is well known that the plasmapause is influenced by the solar wind and magnetospheric
conditions. Empirical models of its location have been previously developed such as those …

During high‐speed solar wind streams, substorms occur repetitively and relativistic electron
fluxes enhance significantly. It has recently been proposed that enhanced dawnside chorus …

Substorm activity, due to either substorms or substorm‐associated disturbances, shows two
preferred recurrent intervals for periodic events. While the longer recurrent interval of∼ 3 hr …

Electromagnetic ion cyclotron (EMIC) waves tend to occur during geomagnetic storms and
solar wind pressure pulses. However, they have also been regularly observed even in the …

Previous simulations have suggested that O+ outflow plays a role in driving the sawtooth
oscillations. This study investigates the role of O+ by identifying the differences in …